Ht Wizard Ultra Operation Manual

Transcript

HT Wizard Ultra Operation Manual Tremetricsi10393 West 70th StiEden Prairie, MN 55344iTremetrics.Com HT Wizard Ultra Operation Manual Table of Contents Warranty Instrument Description, 1.0 Features & Benefits, 2.0 Technical Specifications, 2.1 Default Configuration Options, 3.0 HT Wizard Front View 4.0 HT Wizard Back View 5.0 Opening and Closing the Wizard 6.0 Using the Touch Screen 7.0 Using Audio Feedback 8.0 HT Wizard Software Basics 9.0 How To Run a Hearing Test 10.0 Using the Test Button 10.1 Test » Test Tab 10.2 How to Run a Manual Hearing Test 10.3 How to Create A New Hearing Test 10.4 Test » Subject Info Tab 10.5 Test » More Tab 11.0 Using the Tools Button 11.1 How to Set Up the HT Wizard 11.2 How to Use the Password Keyboard 11.3 Tools » Daily Tasks 11.4 Tools » Daily Tasks » Enter » Enter Audiogram 11.5 Tools » Daily Tasks » Review » Subject ID 11.6 Tools » Daily Tasks » Review » Tests 11.7 Tools » Daily Tasks » Review » Results 11.8 Tools » Daily Tasks » Review » Subject Info 11.9 Tools » Daily Tasks » Review » More 11.10 Tools » Daily Tasks » Review » Tag Range 11.11 Tools » Daily Tasks » Reports 11.12 Tools » Daily Tasks » Backup 11.13 Tools » Setup 11.14 Tools » Setup » Audiometer 11.15 Tools » Setup » Audiometer » Test Options 11.16 Tools » Setup » Audiometer » Questions/Answers 11.17 Tools » Setup » Audiometer » Printing Options 11.18 Tools » Setup » Audiometer » Factory Defaults 11.19 Tools » Setup » Passwords 11.20 Tools » Setup » Diagnostics 11.21 Tools » Setup » Diagnostics » Hardware ID Check 11.22 Tools » Support 12.0 How to Use Talk Over 13.0 Loading Paper, 14.0 Automatic Paper Loading, 15.0 Manual Paper Loading, 15.1 Ordering Paper, 16.0 How to Print Reports, 16.1 Reports, 17.0 Using the Help Button 17.1 Help Topics 17.2 Alert Messages, 17.3 Error Codes 18.0 Glossary i 1 2 3 5 7 9 10 11 11 12 12 13 17 17 19 21 23 26 27 27 29 30 32 33 34 35 36 37 38 39 41 42 43 45 48 50 51 53 55 57 58 59 59 60 60 61 62 62 65 65 65 66 69 HT Wizard Ultra Operation Manual WARRANTY TREMETRICS, “Seller,” warrants the goods sold will conform to all pertinent specifications including performance specifications, drawings and approved samples, as furnished. Seller also warrants said goods to be free of defective materials and workmanship. This warranty is in lieu of all other warranties, express or implied. SELLER MAKES NO WARRANTY THAT SAID GOODS ARE FIT FOR ANY PARTICULAR PURPOSE, NOR ANY WARRANTY AS TO THE MERCHANTABILITY OR QUALITY OF GOODS SOLD EXCEPT AS HEREIN STATED. All claims for alleged defects of goods under this warranty shall be deemed waived unless made in writing and delivered to Seller within twelve (12) months after date of shipment, unless otherwise specified herein below, and on any such claims, Seller has the option of inspecting the goods claimed defective at the Buyer’s place of business or having them returned to Seller for inspection. Instrument parts that have been repaired or replaced during the warranty period are themselves warranted only for the remaining unexpired portion of the original warranty. This warranty shall not apply where goods have been subject to misuse, neglect, accident or improper application or have been repaired or substantially altered by others, nor does this warranty apply to items consumed in the ordinary course of use of the goods, such as, but not limited to, fuses or batteries. This warranty shall not apply to calibration of the earphone transducers, which is subject to change through normal use. Transportation charges covering returned goods are the buyer's responsibility. No returns will be accepted unless authorized by Seller. SELLER’S LIABILITY SHALL BE LIMITED TO SELLER’S STATED SELLING PRICE PER UNIT OF ANY DEFECTIVE GOODS AND SHALL IN NO EVENT INCLUDE BUYER’S MANUFACTURING COSTS, LOST PROFITS, GOOD WILL OR ANY OTHER SPECIAL OR CONSEQUENTIAL DAMAGES. Seller may, at its discretion, repair with new or factory refurbished parts, replace, or give Buyer credit for, such defective items. Items produced by third party manufacturers shall carry that warranty provided to Seller by said third party manufacturers. Seller shall pass such warranty to the Buyer. Tremetrics 7625 Golden Triangle Drive, Eden Prairie, Minnesota 55344 Telephone 800-825-0121 Tremetrics.Com 1 HT Wizard Ultra Operation Manual Instrument Description The HT Wizard is a pure-tone air conduction microprocessor screening audiometer. Designed in an attractive portable compact case, the HT Wizard includes state-of-the art software and electronics. Typical users include military organizations, large industries, and medical offices, which screen individuals for hearing loss or acuity. With proper operation, maintenance, and scheduled calibrations, the HT Wizard provides reliable and repeatable results. The HT Wizard determines hearing threshold levels using the proven Hughson- Westlake Test Paradyne, which allows the operator to screen subject’s for shifts in hearing acuity. Use the audiometer to record the subject’s current threshold, which may be affected from day to day noise exposure, colds, sinus infections, or other problems. The audiograms obtained from HT Wizard may be used to maintain records for the subject and for the company administering the test. This helps the health care professional evaluate and prevent major hearing problems. With the use of an optional Electro-Acoustic Ear (OSCAR), for daily comparisons to acoustic ear baseline, the operator can verify calibration. Terminology “HT Wizard” as used through out this operation manual refers to the “HT Wizard Ultra” audiometer. Medical Disclaimer: Testing, as referred to in this manual, is the screening procedure used to establish thresholds (hearing levels) and is in no way trying to diagnose, monitor, or treat any medical problem, disease or injury. If a problem is suspected, the subject should be referred to an audiologist or medical doctor for evaluation. 2 HT Wizard Ultra Operation Manual 1.0 Features & Benefits Features Benefits Automatic Retest Automatic retest of suspect HTLs insures valid tests. • Retest failed frequencies • Retest shifts from baseline >15 dB • Retest on contralateral differences >40 dB • Retest on excessive levels ≥ 90 dB Auto-Subject Instruction Automatically instructs the subject in nine languages insuring accurate testing with reduced operator involvement. Computer Connectivity Computer interface for RS232 serial. Allows data interchange with data management software. Full bi-directional data transfer between HT Wizard and PC Enables complete data transfer to backup and interface to data management software. High speed, printer Saves time by not waiting for printouts. Inclusive Test Display Allows the operator to view the progress of the hearing test, comparison to the baseline, average of 2k, 3k, and 4k along with STS and STS/P on one screen. Large Color display with touch screen keys Easy to use and understand. Optional Earphone or Inserts Allows testing with air conduction or insert headphones. External Keyboard and Mouse Allows the attachment of optional PS2 or USB external keyboard and mouse for supplementing touch screen data entry. Reports Reports to help manage your hearing conservation program. Reports tell you: • Who is due for testing? • Who has an STS? • Daily Biological Log? Sound Room Monitor (OSCAR 7) Insures that the testing environment during the test was suitable. Split Baselines Allows separate revised baselines. Storage for 10,000 Audiograms Allows storage for large hearing conservation programs. 3 HT Wizard Ultra Operation Manual Features Benefits Test Integrity, Configuration The HT Wizard verifies before each hearing test that the audiometer is properly configured adding additional test validity. Test Integrity, Daily Biological The HT Wizard maintains a Pass/Fail log of the daily biological test and listening check. Test Integrity, ID Earphones New patent pending features insures that the test results are valid. Earphones are uniquely and electronically identified to insure that they were calibrated with the correct HT Wizard. Test Integrity, Reminders Reminds operator when a daily biological test and calibration is needed. Test Integrity, Security Three security levels protect valuable hearing testing data. 4 HT Wizard Ultra Operation Manual 2.0 Technical Specifications Item Specification Attenuator Range -10 dB to 100 dB in 5 dB steps for hearing tests Attenuator Accuracy +/- 1 dB Audiogram Backup USB Flash Memory Audiogram Storage Internal Storage, 10,000 audiograms Calibration Non-volatile EEPROM, calibration date printed on each audiogram. Calibration reminder 45 days prior to renewal. Provides for calibrating two headsets or headset/inserts. Clock Real time, battery backed; time of day printout Compliance Documentation Calibration; Daily Biological test; earphone, OSCAR, and handswitch identification Data Output High speed RS232C Dimensions • Depth: 13 inches (330.2 mm) • Height: 3.5 inches (88.9 mm) • Width: 17.25 inches (438.2 mm) • Weight: 11.3 pounds (5.1 kg) • 8 x 6-inch (211.2 mm x 158.2 mm) Active Matrix Liquid Crystal color display with touch screen • 600 x 480 DPI 256 Colors • 11.5 –inch (292.1 mm) height when open Display Distortion Total harmonic distortion below 40 dB (1%) Electrical Power 100 VAC to 250 VAC 50 to 60 Hz 30 w Frequency Accuracy +/- 1% crystal controlled Frequencies 500 Hz, 1K, 2K, 3K, 4K, 6K, 8K Handswitch Long life, exceeding 1,000,000 closures – includes automatic identification ID Wizard) for configuration verification. Headset Telephonics TDH-39, 10 ohm earphones in Model MX 41 cushions – includes automatic identification (ID Wizard™) for compliance testing. Insert Earphones EAR-Tone 5A Languages Eight multimedia subject instruction languages: English, Dutch, Spanish, Italian, French, German, Cambodian, and Vietnamese. Linearity < 1 dB / 10 dB step – < 3 dB from –10 dB to 100 dB 5 HT Wizard Ultra Operation Manual Item Specification Mechanical High impact, GE Noryl® U.L. approved plastic housing. Memory Up to 512 MB RAM On/Off Ratio >70 dB Operating Temperature 15 °C to 35 °C relative humidity 30% to 90% Paper Standard-1 roll paper, 80 x 50 mm or Long-life-1 roll paper, 80 x 50 mm Printer High speed, extra-wide format graphics printer, 15 seconds with full compliance documentation. Rear Panel Jacks Four separate, standard 1/4” stereo jacks for left earphone, right earphone, OSCAR and handswitch. 2X USB 2.0, Ethernet Port, PS2 Rise/fall Time Min 20 ms / Max 50 ms Standards ANSI S3.6 1996 Type Pure tone air conduction. 6 HT Wizard Ultra Operation Manual 2.1 Default Configuration Options When you receive your HT Wizard the factory has set up the following default configurations. You or your dealer can change these configurations to meet your specific hearing conservation needs. 1. Touch the Tools » Print action button to display the Reports Dialog screen. 2. Touch the HT Wizard Audiometer Setup button to print your system’s configuration options. Your printout will include the following fields of information. The information to the left of the colon is the factory defaults: HT Wizard Audiometer Setup Company Information This is the name of your company. System Information This field contains your audiometer model name and system information. Serial Number: audiometer serial number Hardware Version: Software Version: Firmware Version: Test Options Ear to Test First: Left Lower Level to Test: 0 dB Include 8 kHz in Test: Yes Tone Test Mode: Pulsed Adaptive Mode: Yes Retry on Error: Once Beep on Keypress: No Retest Criteria Adjacent Frequency >= 50 dB: Yes Contralateral >= 40 dB: Yes HTL >= 90 dB or 500 Hz >= 30 dB: Yes Difference from Base >= 15 dB: Yes Print Options Print on Test Complete: Yes Print Bar Graph: No Print Subject Responses: No Print Questions: Yes 7 HT Wizard Ultra Operation Manual HT Wizard Audiometer Setup Subject Questions This area lists all the questions and answers designed for your hearing test. ID (not configurable) First name (not configurable) Last name (not configurable) DOB (not configurable) Gender: (not configurable Male or Female) Test Type (question is not configurable): Annual, Baseline, 30 Day Retest, Revised Left Baseline, Revised Right Baseline, Revised Both Baselines Next Test Date (not configurable) Hrs Since Exposure: more than 14 hrs, less than 14 hrs Noise Exposure: less than 85 dB, more than 85 dB, more than 90 dB, more than 95 dB, more than 100 dB Work Location: (examples: City, state, Building xxxx, Plant) Department: (examples: Machine Shop, Human Resources, Assembly, Manufacturing) Examiners This field contains a list of all the examiners administering hearing tests at your site. 8 HT Wizard Ultra Operation Manual 3.0 HT Wizard Front View The compact and portable HT Wizard performs complete audiometric screening tests including audiogram reports and calibration. 1. Touch Screen Handle—use this after raising the touch screen lever (3) to position and close the HT Wizard touch screen. 2. Touch Screen—touch lightly to navigate throughout the HT Wizard software. Keep clean with monitor wipes or a soft moist cloth. 3. Touch Screen Lever—pull to unlock touch screen and release to lock touch screen. Gently pull this first while using the touch screen handle to position the touch screen for viewing. 4. Printer—load the paper to print audiograms and reports. See the topic Loading Paper for instructions on how to load paper into the printer. 5. Paper Feed Roller/Paper Release Lever—feed and release paper. See the topic Loading Paper for more detailed instructions. Figure 1 HT Wizard Features (Front View) 9 HT Wizard Ultra Operation Manual 4.0 HT Wizard Back View The HT Wizard hardware and connections are labeled for configuration. • Power plug—100 to 250 VAC, 50 TO 60 Hz. • Power Switch—use this switch to turn the HT Wizard on or off. Allow any test that is running to finish, then touch Tools »Daily Tasks» Power Off before turning the power switch off. • Earphone—insert the blue headset plug for the left ear in the left jack with the blue circle. Insert the red headset plug for the right ear in the right jack with the red circle. • External Speaker—use for 3.5 mm for optional external speakers (not supplied.) • OSCAR—insert the OSCAR 6 or OSCAR 7 into the OSCAR jack with the green circle. Used to perform daily biological check and sound room monitoring (sold separately.) • Hand Switch—insert the handswitch, which allows the subject to respond to a tone, into the handswitch with the orange circle. • RS-232—allows you to connect to a PC for uploading audiograms. • Ethernet—for future expansion. • PS2 Keyboard/Mouse—for data entry. • USB Ports — test session backup and program update. • Monitor — for future expansion WARNING! Personal Injury. For your protection, be sure to heed the warning messages located on the back or bottom of the HT Wizard. Always contact your service technician for repairs. Select Tools » Support to view contact information. Figure 2 HT Wizard Connections (Back View) 10 HT Wizard Ultra Operation Manual 5.0 Opening and Closing the Wizard Before you turn on the HT Wizard, learn how to open and close the touch screen. Figure 3 How to Open the HT Wizard for Use (Front View) 1. Touch Screen Lever—pull to release, release to lock. Gently pull this first, while using the touch screen handle to position the touch screen for viewing and closing. 2. Touch Screen Handle—use this to position and close the HT Wizard touch screen. CAUTION: Instrument Damage. Always lift the touch screen lever and use the Touch Screen Handle before positioning the touch screen. Doing otherwise may damage the HT Wizard positioning mechanism. 6.0 Using the Touch Screen Use your finger or the tip of a pencil eraser to lightly ‘touch’ the action button matching the action you wish to perform. For example, in Figure 5, Test » Test Tab » Auto Test Screen, we touched the Test action button. Take a few moments to get acquainted with your HT Wizard. Touch the action buttons to view various screens and their functions. 11 HT Wizard Ultra Operation Manual 7.0 Using Audio Feedback The HT Wizard provides audio instructions to the subject during the hearing test. Your subject can hear instructions to help them take the test. 8.0 HT Wizard Software Basics Find out which action button contains the tools you need to use. Action Buttons (touch to activate screens) Figure 4 HT Wizard Introduction screen Introduction Screen: The Introduction screen changes when you touch the Tools or Test action button. Action Buttons: Action buttons activate screens or perform an action. They are always located on the right panel of the screen throughout your HT Wizard session. Test: Displays the Test screen. See “Using the Test Button.” Tools: Displays the Tools screen. See “Using the Tools Button.” Talk Over: Allows you to use the internal microphone to speak to your subject through the headphones. See "Using the Talk Over Button." Print: Prints audiograms, reports, and system information. More printing instructions are listed in Tools » Daily Tasks » Reports “Using the Print Button.” Help: Displays the Help text-file. See “Using the Help Button.” 12 HT Wizard Ultra Operation Manual 9.0 How to Run a Hearing Test Run a hearing test like a pro, every time! NOTE: Software Setup Required. A designated Supervisor must have initially setup the software and assign a user password before all software screens are available. See "How to Set Up the HT Wizard” for set up instructions. 1. Start the HT Wizard. a. Turn on the HT Wizard power switch located on the back of your HT Wizard. The HT Wizard starts by initializing the hardware and software for use and displays the Audiometer Connection Check screen (see Figure 15). b. If all the hardware initializes correctly, press Exit at the Audiometer Connection Check screen to display the introduction screen. Otherwise, see "How to Set Up the HT Wizard" for more instructions. 2. Touch the Test action button to display the Auto Test screen. Tab (Active) Date and Time Screen Buttons (Leads to more Screens) Figure 5 Test»Test Tab»Auto Test Screen Screen Tabs Touch to change to the contents contained in the selected tab. Inactive tabs are grayed out until activated. Date and Time Displays current date and time. 13 HT Wizard Ultra Operation Manual Screen Buttons Touch to view more screens related to this button or the keyboard screen. Subsequent screens let you enter or view more specific information about the subject being tested. 3. Touch the Examiner button to display the Examiner list box. a. Touch one of the listed examiner IDs. b. Touch Accept to return to the Auto Test screen. Notice that the selected examiner displays on the Examiner button. Detailed descriptions for each item associated with the Test Action button is listed Test » Test Tab. 4. [Optional] Touch the language button to display the Test Language screen. Factory default is English. a. Touch one of the listed languages to use for the current test. b. Touch Accept to return to the Test screen. Notice that the selected language displays on the Language button. 5. Touch the New Test button to display the Create New Test screen. a. Figure 6 Examiner List Box If you see the display ‘Notice: A Backup has not been performed within the past week’, touch the Close button. This prompt reminds you that a backup should be performed. Perform a backup. See Tools » Daily Tasks » Backup. b. If you see the display ‘Alert: A daily biological has not been performed within the last twenty-four hours,’ touch the Close button. c. Perform a daily biological by touching the Daily Biological/ Listening Check button from the Tools » Daily Tasks screen. 6. Create a test for the subject. a. Touch an existing ID from the Create Test for the Selected Subject ID list showing, using the page up/page down or arrow buttons to navigate. Figure 7 Test»New Test»Create New Test Screen 14 HT Wizard Ultra Operation Manual Or b. Enter a new subject ID number in the Create a Test for a New Subject ID area using the number pad on the screen. c. Touch the button displaying the subject ID. d. This returns you to the Auto Test screen. After initializing, Ready to Begin displays on the status bar (status bar is shown on Figure 8.) e. If you need to edit the Subject ID information go to Tools » Daily Tasks » Review » Subject ID to select the subject ID you wish to correct. Touch Subject Info and select the Subject ID field to edit the Subject ID. See Tools » Daily Tasks » Review » Subject Info on for more information. f. If you see the display ‘A baseline for this ID does not exist, is it OK to make this the baseline?’ Touch Yes to designate it as a baseline or No to leave it as an annual. You will be returned to the Auto Test screen. For a detailed discussion about each item on this screen see "How to Create a New Hearing Test." 7. Prepare the subject for the test. a. [Optional] Touch the Test-Type button if you need to select a different test type. b. Ask the subject to remove earrings, jewelry, and pull hair behind ears. c. Give the subject a brief explanation of what to expect. Remember the HT Wizard provides detailed instructions when the test is started over the subject’s headphones. d. Place the headphones on the subject and adjust till comfortable. Be sure the red headphone is placed on the right ear. Subject ID Name Status Bar Screen Name Test-Type Button Language Button Examiner Button Figure 8 Test»New Test»Create New Test Screen 15 HT Wizard Ultra Operation Manual 8. Touch the Run button. The HT Wizard begins to audibly instruct the subject using the language displayed on the language button. The subject receives instructions through the headphones. You will hear the messages through the HT Wizard speakers. When the instructions are complete the test automatically starts. a. You can watch the status bar to see the subject’s responses and any audiometer messages. NOTE: If for any reason the subject has a problem, the HT Wizard recognizes the problem and instructs the subject on what they need to do to correct the problem, then restarts the test automatically. b. You can view the subject’s results at each frequency. c. You can review, edit or enter the subject’s information in the Subject Info or More tabs. d. Detailed information for test functions are listed in the topic "Using the Test Button." 9. Touch the Print button after the test is complete to print the Tremetrics HT Wizard current subject audiogram. 16 HT Wizard Ultra Operation Manual 10.0 Using the Test Button 10.1 Test»Test Tab Use this screen after you have completed the daily biological and selected a subject. 1. Touch the Test action button to display the Auto Test screen. The Auto Test screen is the heart of the HT Wizard, as it allows you to monitor the hearing test while it is in progress. Subject ID (selected) Screen Name Status Bar Status Codes Date and Time Figure 9 Auto Test Screen Subject ID / Name Displays the subject’s ID and/or name. If the name was not entered then only the ID displays. Look here to confirm that the correct subject is selected. Use the Subject Info tab to enter the subject’s full name. Screen Name The upper-right corner of each screen displays the current screen’s name. This screen reads ‘Auto Tests’. Status Bar Displays the communication status of the HT Wizard to the subject and operator. Frequency Lists what frequency level is being tested. Left Ear The subject’s left ear results at each level. Look here to see the subject’s status codes at each testing level. Status codes also include Error codes. See Table 1 Status Codes. Baseline The baseline from a previous test or if the test being taken is a baseline, these cells contain AA until the subject completes that frequency. Shift This is the difference between the current audiogram and the baseline at each frequency. 17 HT Wizard Ultra Operation Manual Right Ear The subject’s right ear results at each level. Look here to see the subject’s status codes at each testing level. Status codes also include Error codes. See Table 1 Status Codes. Avg/STS The average at 2, 3, and 4 kHz. STS/P Prebycusis or the correction for aging. Examiner Touch this button to select an examiner. Pressing this button displays the Examiner ID screen where you can select an examiner. Test Type Touch to display the Test Type list. The type of test you select replaces the text on Test Type button. Touch the type of test you will be administering. This defaults to Baseline on the first test and Annual on subsequent tests. Language This button displays the language selected for audible instructions. Touching None disables the audible instructions. Touching Beep on Done disables the audible instructions and indicates when the test is complete. Date and Time Displays the current date and time. Check this area daily to confirm that the audiometer date and time is set correctly. Manual Touch this button to display the Manual Test screen. If the test is running press the Pause button. See “How to Run a Manual Hearing Test” for detailed instructions. Pause Stops the test until you touch the Run button again to resume testing. Run Starts and administers the hearing test. New Test Displays the Create New Test screen. Allows you to select a test subject. Touching this button displays an alert if a daily biological has not been performed and successfully completed in the last 24 hours. See "How to Create a New Hearing Test" for more instructions. 2. Check the subject’s status codes to determine how the subject is progressing through the test. Table 1 – Status Codes Status Codes Meaning AA Frequency Not Tested DD Deleted Frequency E(x) [i.e.,E1] Error Codes mean an error condition, for example ‘E2’ See “Error Codes” for explanations. 3. [Optional] Touch the Help action button to display Test Help text. 18 HT Wizard Ultra Operation Manual 10.2 How to Run a Manual Hearing Test The Manual Test screen allows you to manually test the subject, view the results. 1. Touch the Test button to display the Auto Test screen. The Manual button is not activated. a. Touch the Examiner button to select an examiner from the Examiner list box. b. Touch the New Test button to select a subject from the Create New Test screen. You will return to the Auto Test screen. c. Touch the Manual button to display the Manual Test screen and run a manual hearing test. Subject ID Displays the selected subject ID. Talk Over Touch this button to talk to the subject during the test. Response Status Watch this area. If the subject does not respond, touch the +5 dB or NO button to increase the level. Touch the Present Tone button. If the subject responds, touch the -10 dB or YES button to decrease the level, and then touch the Present Tone button. Touch the Present Tone button at each level to determine the lowest level the subject responds to in at least two out of 3 ascending presentations. Present Tone Touch to present the tone. Touch to raise the hearing level 5 dB. (No response) Touch to lower the hearing level 10 dB. (Yes response) Run Semi-Auto Test Another method for doing the hearing test. Touch the ear and frequency to test, and then touch this button. An automatic test runs for this ear and frequency ONLY and the result is stored automatically. Pause Test Touch to pause the test. Help Displays the Test Manual Help. Save NR Saves the no response answer. For example, if you are testing a subject that does not respond at 100 dB, just press the NR (no response) button and NR displays as the threshold. Save Manual Saves the current result of the frequency you are testing manually. Touch this after each frequency is tested. Exit Returns to the Auto Test screen 2. Touch the Frequency button beside the frequency level and under the correct ear (Left or Right) to test. 19 HT Wizard Ultra Operation Manual 3. Use the +5 dB and -10 dB Level buttons to set the level. 4. Touch the Present Tone button to present a tone. 5. Touch the Save Manual button to save the result. An ‘M’ displays beside the answer indicating the test was done manually. When the test finishes it saves automatically to the HT Wizard. 6. Touch Exit to return to the Auto Test screen. 7. [Optional] Touch the Print action button to print the test. 20 HT Wizard Ultra Operation Manual 10.3 How to Create a New Hearing Test Use this screen to create a new test for a subject. 1. Touch the Test button to display the Auto Test screen. 2. Touch the Examiner button to select an examiner. 3. Touch the New Test button. 4. Touch a subject ID. Figure 11 Create New Test Screen NOTE: You can select a subject in various ways. Create Test for the Selected Subject ID (group box) Use this group to select a previously stored subject ID. Touch the up and down or PgDn buttons to scroll the listed IDs. Each ID is highlighted as you scroll the list and automatically displays the subject ID and name if previously entered on the Create Test for the Selected Subject ID button and the Create Test for a New Subject ID button. As an alternative, on the number keypad, start entering the ID number. Keep entering the ID until the subject’s ID and name display in the Create Test for the Selected Subject ID button. Then touch that button to return to the Auto Test screen. Touch either button displaying the desired subject ID, which returns you to the Auto Test screen. Wait for the screen to initialize the new test. You are ready to start a new test. 21 HT Wizard Ultra Operation Manual Create Test for a New Subject ID Use the keyboard to enter the subject’s ID number, and then press this button to add it to the Create Test for the Selected Subject ID list. As you enter numbers the display on the left tries to match the number you are entering. Instructions for editing subject information is listed in Tools » Daily Tasks » Review » Subject Info. If a baseline for this subject is not entered, then a prompt will ask you if it is okay to make the test a baseline. A Yes or No response to the prompt returns you to the Auto Test screen. Help Displays Test New Test Help. Cancel Touch Cancel to be returned to the Auto Test screen. 22 HT Wizard Ultra Operation Manual 10.4 Test»Subject Info Tab Use this tab to enter new subject information, even while a test is running. 1. Touch the Subject Info tab to view the Subject Questions screen. Figure 12 Subject Questions Screen NOTE: Activate button labels by selecting them in Tools » Setup » Audiometer then enter your password. Then touch Questions/Answers to display the Subject Answer Setup screen. Touch the More tab to activate questions displayed on the Test » More tab. 2. General Keyboard Instructions NOTE: For General Keyboard Help, Touch Help on the display at the password screen. Use the keyboard to type the desired entry into the blank filed. The first letter of each entry is automatically capitalized. Back: Use this to backspace on the field. This is helpful when you think you typed the wrong character (alpha or numeric). Change A/a: Use this to change from upper to lower case characters. The first letter of each entry is automatically capitalized Space: This is the same as a space bar. Use to enter a space between characters. Clear: Touch to clear all characters from the field. Cancel: Touch to discard changes and return to the previous screen. Touch Accept to record changes and return to the previous screen. Touch the Prev button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. 3. [Optional] Touch the Help action button to display Test Subject Info Help text. 23 HT Wizard Ultra Operation Manual 4. Subject Field Descriptions First Name MI Displays the First Name MI keyboard. Enter the name of the subject using only the touch screen keyboards. Last Name Displays the Last Name keyboard. Enter the name of the subject using only the keyboard. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. D.O.B. Displays the D.O.B (Date of Birth) list box. Use the keyboard to enter the month, day, and year using the format (mm dd yyyy). Touch Help to display General Date Entry Help text. Touch the keys on the keypad to enter the desired date. This type of keypad has Previous and Next buttons for easier access to previous and next fields. Use the Back button to clear one character from the field. Use the Clear button to clear all characters from all fields. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next screen listed in the Subject Questions screen. Gender Touch Male or Female. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. Looking at the items listed, touch the desired selection. Use the arrow keys or page up and down to scroll the list. Test Type Use the Arrow buttons to touch the desired Test Type. This may have been previously defined; this step can be skipped by pressing the Next button. Touch Help to view General Select Help. Use the Up or Down buttons to move up and down the list. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. Next Test Enter the next date the subject will be tested. By default, the HT Wizard enters the current date plus one year. Touch the Next button to accept the default entry. The next test date can be changed after reviewing the completed hearing test. 24 HT Wizard Ultra Operation Manual Hrs since Exposure Use the Arrow buttons to select how many Hours since Exposure to noise. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. Noise Exposure Use the Arrow buttons to select the level of the Noise Exposure. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen. Location Use the Arrow buttons to select the location where the subject is being tested. The item you select from this list box displays on the Top button. In addition to the items found in the list box, you can add other items by touching the Top button to display the Keyboard. Then enter the desired item. For example to change Austin, Texas to Dallas, Texas: 1. Touch the Austin, Texas Top button to display the Keyboard. 2. Touch the Clear button to clear the entry. 3. Touch the letters to type Dallas, Texas. 4. Touch Accept to accept the entry. Your entry will not display in the list box, but does display on the Top button. 5. Touch Accept at the list box. Touch the Previous button to go back to the previous field listed in the previous screen. Touch the Next button to go the next field listed in the previous screen. Department Use the Arrow buttons to select which department the subject is assigned to. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the first field listed in the Subject Questions screen. Figure 13 Location List Box 25 HT Wizard Ultra Operation Manual 10.5 Test»More Tab Use this tab to adjust the subject’s profile and responses to the questions and answers. 1. Touch the More tab to display the More Questions screen. 2. [Optional] Touch the Help action button to display Test More Help text. Figure 14 More Questions Screen NOTE: The button labels and answers displayed on this screen were defined and activated by touching the Tools » Setup » Audiometer » Questions and Answers and then touching the More tab. Job Type Use the Arrow buttons to touch the subject’s Job Type. Touch the Previous button to go back to the previous field listed in the Subject Questions screen. Touch the Next button to go the next field listed in the Subject Questions screen (Figure 12). Shift Touch this button to display the Shift list box. Choose the shift your subjects work by touching the desired response. Touch Accept to enter your choice. Question 1 - 6 Touch this button to display the Question list box. Touch the desired response. Touch Accept to enter your choice. Comments Touch this button to activate the Comments list box. Touch an entry or add a new comment. 26 HT Wizard Ultra Operation Manual 11.0 Using the Tools Button 11.1 How to Set Up the HT Wizard When you first receive HT Wizard representative delivers your system, someone (preferably a supervisor) should setup the HT Wizard. 1. Turn the HT Wizard on. The HT Wizard begins to initialize the audiometer and stops at the Audiometer Connection Check screen. Figure 15 Audiometer Connection Check Screen Check Audiometer Connections If you see the message **Problems Detected During System Check**, reseat all the connections located on the back of the HT Wizard, and then touch this button to recheck the hardware. If the screen indicates the problem and you should be able to resolve the problem without calling for service. For example, in Figure 15 the headphones are plugged in wrong and should be reversed. Help Press Help to display Tools Diagnostics Connection Check help text. Exit If there are still problems, press Exit to display the introductory screen. 2. Press Exit at the Audiometer Connection Check screen to display the HT Wizard introduction screen if all the hardware initializes correctly. 3. Touch the Tools button to display the Daily Tasks screen. 27 HT Wizard Ultra Operation Manual 4. Touch the Setup tab to display the Setup Tasks screen. a. Touch the Audiometer button to display the Enter Password screen. See How to Use the Password Keyboard for more details on this screen. b. Enter the Default setup password: “Setup” Notice that the default password is case sensitive. This password can be changed. c. Press the Accept button to display the Audiometer Setup screen. 5. Use the Audiometer Setup screen to setup up the audiometer for use. See Tools » Setup » Audiometer for details about this screen. 6. Assign User and Supervisor passwords: Default User password: (none assigned) Default Setup password: “Setup” If the setup password is forgotten contact the factory representative. Supervisors should redefine the setup password. 7. Print the Support & Contact Information report for faster reference if you should experience system problems. a. Touch the Tools and Print action buttons to display the Reports Dialog screen. b. Touch the Support & Contact Information button to print this report. c. After the report is finished printing, tear it off and place it in a location where you can quickly get this information. 28 HT Wizard Ultra Operation Manual 11.2 How to Use the Password Keyboard Several functions located in the Tools section require passwords. Your password determines which options display on subsequent screens. 1. Use the Password keyboard to enter an assigned password. 2. Keyboard instructions Figure 16 Enter Password Keyboard Enter Password Touch the keys on the keyboard to enter a user or supervisor password. Passwords are set up by the supervisor during setup. Passwords are limited to twenty characters (alpha/numeric, not special characters like @, ?, ., / ~ - :) and may be upper or lower case characters. NOTE: User passwords have less access to administrative functions. The first letter of each password is automatically capitalized. Back Use this to backspace on the Enter Password field. This is helpful when you think you typed the wrong character (alpha or numeric). Change A/a Use this to change the last character entered from upper to lower case. Space This is the same as a space bar. Use to enter a space between characters. Clear Touch to clear all characters from the Enter Password field. Help Touch to display General Enter Password Help text. Cancel Touch to return to the previous screen. Accept Touch to enter the password displayed in the Enter Password field and display the next screen. 3. Touch the Accept button to display the next screen. See Tools » Setup » Passwords for detailed instructions on setting up and changing passwords. 29 HT Wizard Ultra Operation Manual 11.3 Tools»Daily Tasks Use this screen each day to perform the daily biological and listening check. 1. Touch the Tools button and touch the Daily Tasks tab to display the Daily Tasks screen. Figure 17 Daily Tasks Screen Examiner Displays the Examiner list box. Touch an appropriate response from the list and press Accept to return to the previous screen. Press Cancel to return to previous screen without making any changes. Use the Arrow buttons to touch the desired item. This may have been previously defined and this step can be skipped. Use the Up or Down buttons to move up and down the list. Touch Help to display General Select Only Help. Test Language Displays the Test Language list. Touch the language you want your subject to hear. This is the same function found on the Auto Test screen. Touch None if your subject’s require audible instructions. Press Accept to return to the Daily Tasks screen. Daily Biological/ Listening Check Touch this button to display a screen allowing you to perform a daily biological. 30 HT Wizard Ultra Operation Manual Daily Biological button: Touch the Daily Biological button first before touching the Listening Check button. At the end of the daily biological test, instructions display for performing the listening check. Following the listening check, press the Pass, Fail, or Skip button to indicate the results. Listening Check button: Touch the Listening Check button to display the Accelerated Listening Check screen without first doing the daily biological. Run a listening check test to listen for pure tones, validate that the attenuator is working, and verify that there are no clicks or pops as the frequencies or attenuator changes. Place the headphones on your head, and then press the handswitch for each tone heard in the listening check. Troubleshooting: Check the headphone cords for possible damage. If you encounter a problem, take the headphones and handswitch out of the sound room and plug them directly into the HT Wizard. Repeat the listening check. If the listening check is okay the problem should be suspected in the patch cords. Contact your Tremetrics support representative if the problem persists. Touch Passed, Failed, or Skip to return to the Tools » Daily Tasks screen. The results of the daily biological and the response to the listening check question are stored in the daily biological log. This is an OSHA required log that can be printed as compliance documentation. Power Off Displays the message ‘Do you want to turn off the audiometer?’ Touch Yes or No. Use this control before turning off the power switch to the HT Wizard. Audiogram Management Groups the Enter, Review, Reports, and Backup buttons, which lead to screens important to audiogram management. Enter Displays the Enter Audiogram screen. See Tools » Daily Tasks » Enter » Enter Audiogram. Review Displays the Review Data screen. See Tools » Daily Tasks » Review » Subject ID. Reports Displays the Reports Dialog screen. See Tools » Daily Tasks » Review » Tests. Backup Displays the Backup Subject Tests Dialog screen. See Tools » Daily Tasks » Backup for instructions. 2. [Optional] Touch the Help action button to display Tools Daily Tasks Help. 31 HT Wizard Ultra Operation Manual 11.4 Tools»Daily Tasks»Enter»Enter Audiogram Use this screen to enter a previous hearing test. Figure 18 Enter Audiogram Screen ID Use the keypad to enter the subject’s ID number. Left or Right Use the keypad to enter the hearing test level for the selected ear and frequency level in multiples of 5 dB. DOB Use the keypad to enter the subject’s Date of Birth. Test Date Use the keypad to enter the test date using the mm, dd, and yyyy format. Gender Touch male or female. Type Displays the Test Type list. Touch the test type desired from the list. Back Touch to backspace one character in the field. Clear Touch to clear the field. Next Touch to advance between fields. Help Displays Help on Tools Setup Enter Audiogram Help. Save & Add New Saves the current test and restarts a new screen. Save & Exit Saves current audiogram and returns to the Daily Tasks screen. Exit Returns to the Daily Tasks screen without saving the entered information. 32 HT Wizard Ultra Operation Manual 11.5 Tools»Daily Tasks»Review»Subject ID Use this screen to view and select subjects. Figure 19 Select a Subject ID Screen Subject ID Select the subject by entering the ID into the Subject ID field. You can select an existing ID or delete an existing ID. You cannot add additional IDs in this screen. If you need to edit Subject ID information go to the Subject Info tab. PgUp Use this button to Page Up the through the Subject ID list. ▲ Use the Up arrow to move up the list one item at a time. ▼ Use the Down arrow to move down the list one item at a time. PgDn Use this button to Page Down the list one page at a time. Report Touch this button to go to the Report screen. See Tools » Daily Tasks » Reports for more information. Delete Touch the Subject ID you wish to delete and then touch this button. Enter your supervisor password at the Enter Password keyboard. Confirm with Yes or No to delete the subject and all their audiograms. Help Press Help to view Tools Review Subject ID Help text. 33 HT Wizard Ultra Operation Manual 11.6 Tools»Daily Tasks»Review»Tests Touch the Tests tab to view audiogram tests. You may view, edit test types, delete, tag for PC transfer, and print audiograms from here. Figure 20 Test Date/Time Screen Test Type Touch this button to change the test type of the selected test. Displays the Test Type list. Touch a test type and touch Accept. Tag Use this button to manually tag (*) or untag a record or an audiogram in the list, so that it can be transferred to a PC. Audiograms are automatically tagged for transfer at the completion of each test. After transfer the tag is automatically removed to prevent duplicate transfer of data. Delete Touch this button to delete the selected audiogram. Confirm with Yes or No. Print Touch this button to print the selected audiogram. First Touch this button to move to the first audiogram listed in the list. PgUp Use this button to page up the audiogram list. Use these buttons to move up the audiogram list one audiogram at a time. PgDn Use this button to page down the audiogram list one audiogram at a time. Last Touch this button to go to the last audiogram listed. Help Press Help to view Tools Review Tests Help. 34 HT Wizard Ultra Operation Manual 11.7 Tools»Daily Tasks»Review»Results Touch the Results tab to view audiogram results for the selected subject. Figure 21 Tests Results Screen ▲▼ Use the up or down arrows to review previous or subsequent audiograms. Print Touch to print this audiogram. Help Press Help to view Tools Review Results Help. 35 HT Wizard Ultra Operation Manual 11.8 Tools»Daily Tasks»Review»Subject Info Use this page to view and make changes in the subject’s profile, date of birth, and gender. Figure 22 Subject Information Screen Subject ID This field is password protected. Enter your Supervisor password to change the Subject ID. Touch Accept to accept changes. This action changes the information for all audiograms having this ID. First Name MI Touch to display the First Name MI keyboard. Change the subject’s first name by touching the keys on this keyboard. Touch Accept to accept changes. Last Name Touch to display the Last Name keyboard. Change the subject’s last name by touching the keys on this keyboard. Touch Accept to accept changes. D.O.B. Touch to display the D.O.B. list. Use the keyboard to change the subject’s date of birth. Touch Accept to accept changes. Gender Touch to display the Gender list box. Use the up or down arrow to change the correct gender for this subject. Touch Accept to accept changes. ▲▼ Use the up or down arrows to move up or down the list. Print Touch to print this audiogram. Help Touch to view Tools Review Subject Info Help. 36 HT Wizard Ultra Operation Manual 11.9 Tools»Daily Tasks»Review»More Touch the More tab to display the More Information screen. Use this page to scroll through the subject’s history and view question responses. Figure 23 More Information Screen Job Type Displays a description of the employee’s job type (if activated). Shift Displays the shift the subject works (if activated). Questions Displays the question entered by the Supervisor (if activated). ▲▼ Use the up or down arrows to move up or down the list. Print Touch to print this audiogram. Help Press Help to view Tools Review More Help. 37 HT Wizard Ultra Operation Manual 11.10 Tools»Daily Tasks»Review»Tag Range Select a date range of audiograms to tag or untag. Tagged audiograms are sent to the PC when using the RA500 communications protocol. Figure 24 Tag Range Screen Begin Date The beginning date of a range of dates to tag or untag. Enter the date using the MM DD YYYY format. For February 14, 2001 use 02 14 2001. End Date The ending date of a range of dates to tag or untag. Enter the date using the MM DD YYYY format. Help Touch Help to display Tools Review Tag Range Help. Untag Audiograms To untag the audiograms specified within the beginning and ending date range. Tag Audiograms To tag the audiograms specified within the beginning and ending date range. Exit Touch to return to the Daily Tasks screen. 38 HT Wizard Ultra Operation Manual 11.11 Tools»Daily Tasks»Reports Each button on the “Reports Dialog screen” prints the report indicated on the button. Figure 25 Reports Dialog Screen Daily Biological Report Employees to Be Tested Employees with STS Displays the Report of Daily Biological Log screen. Enter the date range (beginning and ending dates) for this report. Touch Print to print the Daily Biological Log. Displays the Report of Employees to be Tested screen. Enter the date range (beginning and ending dates) for this report. Touch Print to print the Employees to Be Tested (the dates you entered) report. Employees included in this list are from the ‘Next Test Date’ field entered at the time of the hearing test. Displays the Report of Employees with a STS screen. Enter the beginning and ending date range in the specified fields. Touch Help to display General Date Range Help. Touch the keys on the keypad to enter the desired date range. Use the Back button to clear one character from the field. Use the Clear button to clear all characters from all fields. Touch Cancel to return to the Reports Dialog screen. Touch Print to print the Employees with STS (the dates specified) report. Employees Tested Displays the Report of Employees Tested screen. Enter the beginning and ending date range in the specified fields. The report prints in the order of the employee’s last name. Touch Print to print the Employees Tested (the dates specified) report. 39 HT Wizard Ultra Operation Manual Print Current Test with Subject Responses Prints the HT Wizard current test for the selected subject. All subject responses are included in the printout. This is the same as selecting the Include Subject Responses on Printout in print options setup. See Tools » Setup » Audiometer » Printing Options. HT Wizard Audiometer Setup Prints the System Configuration report. Support & Contact Information Prints the Support / Contact Information report. Test Examiners Employees With Last Name Employees with Possible OSHA Recordable Prints the Examiners report. This prints only the Examiner selected during the current HT Wizard testing session. Prints a report that shows the employees name and ID. To print a report with all employees whose last name begins with S, enter “S” at the keyboard screen and touch Accept. If you leave the keyboard screen blank the HT Wizard prints all employees and IDs. Displays the report of employees with possible OSHA recordable test. Enter the beginning and ending date range in the specified fields. Paper Advance Advances the paper in the printer approximately a 1/2 inch. Exit Touch to return to the Daily Tasks screen. 40 HT Wizard Ultra Operation Manual 11.12 Tools»Daily Tasks»Backup Use this button to backup data at the end of each week or to recover previously saved data. Figure 26 Backup Subject Tests Dialog Screen Backup Touch this option to save all hearing test sessions to an external USB Flash Drive. The Flash Drive must be attached to one of the two (2) USB ports located on the rear of the audiometer. (See figure 2 on page 10). Approximately one (1) megabyte of memory is required for every 1000 test sessions. This option saves all hearing tests up to the current date and time the backup is performed. It is recommended that this be done weekly. Restore Touch this option when you need to restore all subject and audiogram data. The supervisor password is required to complete this function. The USB Flash Drive on which previous test sessions were stored must be attached to one of the two (2) USB ports located on the rear of the audiometer. (See figure 2 on page 10.) Select previous test session from the menu. NOTE: All subject and audiogram data in the audiometer are deleted before the restore is performed. Exit Press to return to the Setup Tasks screen. 41 HT Wizard Ultra Operation Manual 11.13 Tools»Setup Use this tab to make configuration changes. Figure 27 Setup Tasks Screen Audiometer Use this button to adjust how the HT Wizard operates. Leads to the Audiometer Setup screen after you enter your password at the Password Entry keyboard. See Tools » Setup » Audiometer for more details. Passwords Use this button to enter or change User or Supervisor passwords. See Tools » Setup » Passwords for more details. Colors Displays the Color Selection Dialog screen. Use this button to select one of six different color combinations available on the HT Wizard. Diagnostics This button is used for HT Wizard diagnostics. Calibration This button leads to the Audiometer Calibration screen. Help displays Tools Setup Calibration help. Contact your dealer for calibration help. Service personnel (factory and dealers) use the calibration button to calibrate the HT Wizard. Microphone Use these buttons to adjust the microphone volume. Adjusts the output from the microphone to the headphones (talk over). About HT-550 Displays the HT Wizard screen saver. Merely touch the screen to return to your previous location. Instructions Use these buttons to adjust the message volume being sent to the headphones and speaker from the computer. Speaker Use these buttons to adjust the speaker volume. Help Press the Help action button to display Tools Setup Help. 42 HT Wizard Ultra Operation Manual 11.14 Tools»Setup»Audiometer Supervisors use these instructions to set up how the audiometer operates during and after testing. 1. Touch Tools » Setup » Audiometer to display the Enter Password screen. 2. Enter the setup password to display the Audiometer Setup screen. Figure 28 Audiometer Setup Screen Test Options Touch to display the Test Options screen. See Tools » Setup » Audiometer » Test Options for instructions. Questions/ Answers Displays the Subject Answer Setup and More Questions & Answers Setup screens. See Tools » Setup » Audiometer » Questions/Answers. Select PBI Method Displays the PBI Method list box. Use the up or down arrows to select a PBI calculation. Change PBI method to STS CAT reprint. Press Accept at the desired entry or Cancel to return to the previous screen. STS Categorization Touch an STS category. Printing Options Select to display the Printing Options screen. See Tools » Setup » Audiometer » Printing Options. 43 HT Wizard Ultra Operation Manual Company Setup Use this button to display the Company Information Setup screen. The information entered into the Info 1 keyboard displays on the Auto Test screen. Information entered into the Info 1-3 keyboards are displayed at the top of each report. Figure 27 Setup Tasks Screen Touch the Info 1 button to display the Company Info 1 keyboard. Figure 30 Keyboard Enter the name of your company. Press Help to display General Keyboard Only Help text. Touch the Info 2 button to display the Company Info 2 keyboard. Enter the city and state of your company. 44 HT Wizard Ultra Operation Manual Touch the Info 3 button to display the Company Info 3 keyboard. Enter your company’s phone number (area code) xxxxxxx. Examiner Setup Displays the Examiners list box. Add, edit, sort, or delete examiners. Enter the names of all examiners. Select Help to display Tools Setup Audiometer Examiner Setup Help. Set Clock Date Activates the Today’s Date screen. Touch the desired numbers for the month, day, and year. Press Help to display General Date Entry Only Help. Touch the keys on the keypad to enter the desired entry. This type of keypad does not have a previous and next button. Use the Back button to clear one character from the field. Use the Clear button to clear all characters from all fields. Press Accept to accept your entry or Cancel to return to the previous screen. Set Clock Time Displays the Current Time list box. Touch the desired numbers for the hour and minutes. Time is entered in military (24 hour) format. For hours in the p.m. add 12 to the hours. Example 2:15 p.m. is 14:15. Press Accept to save your entry. Press Help to display Tools Setup Audiometer Set Clock Time Help. Screen Saver Timeout Displays the Screen Saver Timeout in Minutes list box. Enter the number of minutes desired to activate the introductory screen when the HT Wizard is not in use. Screen saver lengthens the life-span of the display panel. Touch Help to display General Keypad Only Help. Touch the keys on the keypad to enter the desired entry. This type of keypad does not have a previous and next buttons. Use the Back button to clear one character from the field. Use the Clear button to clear all characters from all fields. Press Accept to accept your entry or Cancel to return to the previous screen. Factory Defaults Touch this button to display the Factory Defaults screen. Help Displays Tools Setup Audiometer Help text for this screen. Exit Touch after all setup functions are completed. This returns you to the Setup Tasks screen. 45 HT Wizard Ultra Operation Manual 11.15 Tools»Setup»Audiometer»Test Options Use this screen to customize the audiometer settings. Figure 31 Test Options Screen Ear to Test First Select which ear (left or right) to test first. Lower Level to Test Select either -10 dB or 0 dB for the lowest level to be tested for each frequency. Delete 8 kHz Freq. Check this box if you want to delete the 8 kHz test. Continuous Tone Select this option if you want a continuous tone. Continuous is a single 1-second tone. Deselect if you want Pulse tones. Pulse is a pattern of three short tones. Use Adaptive Mode Adaptive mode automatically slows the test for subjects experiencing difficulty with the test. Retry On Error Once. The audiometer reinstructs and restarts the test once before alerting the operator. When the audiometer is unable to proceed because of an error condition, the audiometer pauses and reinstructs the subject to correctly complete the test. Twice. The audiometer reinstructs and restarts the test twice before alerting the operator. Always. The audiometer reinstructs and restarts the test continues until the operator intervenes. (Not recommended) 46 HT Wizard Ultra Operation Manual Adjacent Frequency >=50 dB Contra lateral (Level in opposite ear) >=40 dB HTL >= 90 dB or 500 Hz >= 30 dB Difference from Baseline >=15 dB If any two adjacent frequencies differ by 50 dB or more the HT Wizard automatically retests the higher of the two. If the test level between the left and right ear at any given frequency differs by 40 dB or more the HT Wizard automatically retests the higher threshold. Causes the audiometer to retest any frequency that has a result greater than or equal to 90 dB greater than or equal to 30 dB at 500 Hz. Causes the audiometer to retest the subject on any test level that differs from the baseline by 15 dB or more. ID Format The HT Wizard has three optional formats for entry of the subject ID. Beep on Button Check if you want to hear an audio response when you touch the touch-keys. Enable Room Monitor The HT Wizard has an optional OSCAR 7 available, which includes a sound room monitor that if selected pauses the test when the noise level in the test room rises above a predetermined level. The HT Wizard will resume testing when the noise level returns to an acceptable level. Help Touch to display Tools Setup Audiometer Test Options Help text. Exit Press to return the Audiometer Setup screen. 47 HT Wizard Ultra Operation Manual 11.16 Tools»Setup»Audiometer»Questions/Answers This options leads to two tabs where you design questions to ask and answers to select. Use these instructions for both screens. Figure 31 Test Options Screen Active Check Boxes Check or uncheck a button listed under the Active column to activate or inactivate a Question and Answer button. Question Buttons Touch any Question button to modify the question to be asked. Displays the keyboard. Type the question you wish your operators to answer. Whatever you enter on this keypad displays on the button and the keyboard screen. However, the Test Type and Next Test fields cannot be modified. Answer Buttons Touch the Answer button to display the list box appropriate to the question being asked. Customize (add, edit, sort, or delete) the answers that your operators will select. Touching the Add or Edit button from a list screen displays the General Keyboard. Use the keys on the keyboard to add another answer to the list. Touching Help from any list box displays General Select Edit Help. Add: Use the Add button to display the keyboard. Use the touch keys to enter the desired entry. Edit: Touch an entry and use the Edit button to edit the entry using the keyboard. 48 HT Wizard Ultra Operation Manual Sort: Highlight an entry and use the Sort up or down buttons to position it in the list. (For faster selection, place the most common answers at the top of the list.) Delete: Highlight an entry and use the Delete button to delete it. ▲▼ Use the Up or Down buttons to move up and down the list. Help Touch Help to display Tools Setup Audiometer Questions Answers Help. Exit Press to return the Audiometer Setup screen. Repeat these instructions for the More Questions and Answers Setup screen. Figure 33 More Questions & Answers Setup Screen 49 HT Wizard Ultra Operation Manual 11.17 Tools»Setup»Audiometer»Printing Options Use this screen to format how your audiogram prints. Figure 34 Printing Options Screen Print Test Results When Test Completes Make sure this option is checked if you want test results to print automatically after completing the test. Include Bar Graph on Print Out Touch this option to include the bar graph on your printouts. Include Subject Responses on Printout Touch this option to include subject responses on your printouts. The subject responses are all good and bad responses or no responses to every presented tone. This includes all the steps that were taken to find a threshold on each frequency. Include Questions and Answers on Printout Touch this option to include a list of enabled questions and answers. Help Displays Tools Setup Audiometer Printing Options Help. 50 HT Wizard Ultra Operation Manual 11.18 Tools»Setup»Audiometer»Factory Defaults You’ll need to use this function when your audiometer reaches 80% full, or to restore setup configurations. Figure 35 Test Options Screen Restore Factory Default Configuration Use this option to restore the HT Wizard to configuration at the time of installation. Displays the password keyboard. Enter the setup or supervisor password. A message will display ‘All passwords and system configuration will be reset, are you sure you want to continue?’ Touch Yes or No. Delete All Audiograms Except Most Recent and Baselines Displays the password keyboard. Enter the setup or supervisor password. A message will display ‘You should perform a backup before performing this operation, are you sure you want to continue?’ Touch Yes or No. See Tools » Daily Tasks » Backup for backup instructions. Use this option after backing up your audiograms to make more storage area available in the HT Wizard. Delete ALL Subject 51 HT Wizard Ultra Operation Manual Records and Audiograms Displays the password keyboard. Enter the setup or supervisor password. A message displays ‘You should perform a backup before performing this operation, are you sure you want to continue?’ Touch Yes or No. See Tools » Daily Tasks » Backup for backup instructions. Use this option when you want to clear all subject history and audiograms from the HT Wizard. PC Serial Communications Baud Rate Touch the baud rate to communicate to the PC. Factory default is 19200. Exit Returns to the Audiometer Setup screen 52 HT Wizard Ultra Operation Manual 11.19 Tools»Setup»Passwords Change, setup passwords, and determine how long the password stays active during a work session. 1. Enter the setup password at the Enter Password keyboard. 2. Press Accept to display the Security Setup screen. Figure 36 Security Setup Screen Change Password Touch to display the New User Password keyboard. Enter your new user password and press Accept to save. Re-enter the password at the next prompt. Password Timeout Touch to display the User Password Timeout in Minutes screen. Enter the number of minutes the HT Wizard can be used before asking the user to re-enter their password again. Change Setup Password Touch to display the New Setup Password keyboard. Setup is the factory default setup password. We recommend that the supervisor change it after setting up the HT Wizard. The new setup password will become the supervisor password. Enter the new setup password. Only supervisors should have authority to change and enter new setup passwords. The setup password has access to more administrative functions than the every day user password. NOTE: LOST PASSWORDS. If you forget the setup password contact your Tremetrics dealer or representative. 53 HT Wizard Ultra Operation Manual General Instructions Use the keyboard to enter your password. Then press Accept to continue or Cancel to go back to the screen you started from. Press Clear to clear any contents displaying in the field. Repeat this step at the next prompt, to confirm your actions. You may always change your mind. Help Click to display the Tools Setup Passwords Help text. Exit Click to return to the Tools » Setup screen. 54 HT Wizard Ultra Operation Manual 11.20 Tools»Setup»Diagnostics Use this option for HT Wizard diagnostics. Figure 37 Diagnostics Screen Audiometer Test Capacity This group of information displays the total number of subjects and audiograms currently stored in the HT Wizard. Audiometer Log Displays the Audiometer Log screen. This screen lists all the dates any action was performed. Calibrate Touch Screen Displays a message ‘You are about to perform touch screen calibration. This operation requires the audiometer to be restarted. Do you wish to Continue?’ Touch Yes or No. Follow the HT Wizard on-screen instructions to touch the X marks, which calibrate the touch screen. Calibration Check Activates and displays the Audiometer Calibration Verification screen. Contact your dealer for calibration. Select Help to display Tools Setup Diagnostics Calibration Check help text. Connections Check Activates and displays the Audiometer Connection Check screen, you typically see at HT Wizard startup. 55 HT Wizard Ultra Operation Manual Hardware ID Check Displays the Hardware ID Check screen. See Tools » Setup » Diagnostics » Hardware ID Check. Exit Returns to the Setup Tasks screen. 56 HT Wizard Ultra Operation Manual 11.21 Tools»Setup»Diagnostics»Hardware ID Check Use this screen for diagnostic purposes only. See the hardware IDs that the audiometer is expecting to receive from the connected hardware (peripherals). It also displays actual IDs of the connected hardware. Figure 38 Hardware ID Check Screen Read Headphone, OSCAR & Handswitch Ids Initially all these fields are empty. Touch this button to read the Ids of the connected hardware. Reset OSCAR & Handswitch Ids Clears the expected IDs for the OSCAR and handswitch. Exit Returns to the Diagnostics screen. 57 HT Wizard Ultra Operation Manual 11.22 Tools»Support Use this page to get immediate technical support information. Figure 39 Support Information Screen The Support Information screen provides you with up-to-date information about the manufacturer of the HT Wizard, the software release, and who to call for support (dealer or factory). 1. Press the Print action button to display the Reports Dialog screen. 2. Touch the Support & Contact Information button to print this information. 3. Touch the Help action button to display Tools Support Help. 58 HT Wizard Ultra Operation Manual 12.0 How to Use Talk Over Use this option to pause the test and talk to your subject. 1. Push and hold the Talk Over action button to talk to your subject. 2. Release the button when you are finished talking to the subject. As long as the Talk Over button is active (pushed in) your microphone is on and the test pauses. When you release the Talk Over button, your microphone is turned off and the test resumes. NOTE: When the HT Wizard is playing recorded instructions the microphone is on and the subject will be able to hear you talking. 13.0 Loading Paper Load paper in the HT Wizard two ways: automatically or manually. Figure 40 Loading Paper 59 HT Wizard Ultra Operation Manual 14.0 Automatic Paper Loading The HT Wizard has an auto-loading function to easily replace paper. The auto-loading function automatically loads paper when you insert a new paper roll and feed the paper into the paper inlet. Auto loading occurs only when the paper release lever is down. 1. Open the printer cover. 2. Make sure the HT Wizard has an empty paper roll. If there is remaining paper, raise the paper-lever to remove the paper. 3. Get a new roll of paper. 4. Cut the edge of the paper so that the corners of the paper are square (90 °). 5. Make sure the paper release lever is down. 6. Insert the paper roll so that the paper feeds under the paper roll and feed the paper into the paper inlet (Figure 40.) The printer senses the paper and starts feeding the paper through the printer as the auto-loading function begins. 7. Close the printer cover. 8. Make sure the paper is straight. To straighten paper, raise the paper release lever up and adjust the paper by pulling on it till it is positioned where you want it. 15.0 Manual Paper Loading 1. Open the printer cover. 2. Make sure the HT Wizard has an empty paper roll. If there is remaining paper, raise the paper-lever to remove the paper. 3. Get a new roll of paper. 4. Cut the edge of the paper so that the corners of the paper are square (90 °). 5. Insert the paper roll into the HT Wizard and do not close the paper cover. 6. Raise the paper release lever up. 7. Feed the paper into the printer in the direction illustrated in Figure 40. After feeding the paper, lower the paper release lever and use the paper feed roller to feed more paper. Make sure the paper is straight. To straighten paper, raise the paper release lever up and adjust the paper by pulling on it till it is positioned where you want it. Now lower the paper release lever. 8. Close the print cover. The printer is ready to print. 60 HT Wizard Ultra Operation Manual 15.1 Ordering Paper Order new paper by calling or faxing a purchase order: Tremetrics 7625 Golden Triangle Drive Eden Prairie, Minnesota 55343 Tel: (800) 825-0121 Fax: (952) 903-4100 Ask for: Standard-1 roll paper, 80 mm or Long-life-1 roll paper, 80 mm 61 HT Wizard Ultra Operation Manual 16.0 How to Print Reports Reports consist of audiograms, system and calibration validation, and the daily biological log. You can print reports in one of three ways: 1. Touch the Print button while in the Test section to print the current subject’s audiogram. This prints the Tremetrics HT Wizard report. 2. Touch the Print button while in the Tools section to display the Reports Dialog screen. 3. Touch Tools » Daily Tasks » Reports to display the Reports Dialog screen. 16.1 Reports Touch the Print action button or Tools » Daily Tasks » Reports to print these reports. Tremetrics HT Wizard After giving a hearing test and while still at the Auto Test screen, press the Print action button to print the subject’s current audiogram. The report displays: • Company Name entered in Company Setup See Tools » Setup » Audiometer. • Subject’s audiogram • Instrument identification and calibration information • Examiner Name • Next Test Date • Subject Demographics • Test Code Definitions for the Test Codes Displayed for This Subject • Audiometer Validation Confirmation Daily Biological Log A report of daily biologicals and listening checks performed within a date range and displays whether they passed or failed. The daily biological log provides documentation of the performance of the daily biological test and the daily listening check test. Each time a daily biological and/or a listening check is completed an entry of Pass or Fail is recorded into the log. Employees To Be Tested Prints the Employees to Be Tested report. This report lists all the employees that need to be tested within the date range you specify. This list comes from the date entered in the Next Test Date field (Test » Subject Info») during each new test. For subjects with an STS, the normal procedure is to retest within 30 days. The Next Test Date field should be changed at the completion of the test to reflect the follow up test date. 62 HT Wizard Ultra Operation Manual Employees With STS Prints the Employees with STS report. This report lists all employees with an STS within the date range you specify. An STS is an average of 2k, 3k, and 4k. Then it is compared to the 2k, 3k, and 4k of the current audiogram compared to the average of 2k, 3k, and 4k of the subject’s baseline. Employees Tested Prints the Employees Tested report. This report lists all the employees tested within the date range you specify. Print Current Test with Subject Responses Prints the Tremetrics HT Wizard Report with Subject Responses Report. This is the current subject’s audiogram with recorded subject responses. HT Wizard Audiometer Setup Prints the System Configuration Report. This report contains information entered into the HT Wizard: • Company Information • Test Options • Retest Criteria • Print Options • Subject Questions • Examiners Print this report at setup and whenever the setup is changed. Retain the report for reference. Support & Contact Information Prints the Support / Contact Information report. This report contains information about who you will need to contact for help or calibration services. Test Examiners Prints the Examiners report. This report lists all examiners entered into the HT Wizard. Employees with Last Name Prints a list of employees with the search and find parameters you enter on the keyboard. For example, if you want a list of all subjects with the last name beginning with S then enter an S on the keyboard. If you want a more selective search like King, then enter King on the keyboard. A list of all subjects is printed if no letter is entered. 63 HT Wizard Ultra Operation Manual Employees with Possible OSHA Recordable Prints the employees with possible OAHA recordable with in the specified date range. A possible OSHA recordable is the combination of a STS and an average at 2K, 3K and 4K that is equal to or Greater than 25 dB. 64 HT Wizard Ultra Operation Manual 17.0 Using the Help Button 17.1 Help Topics Press the Help action button or a Help button from a secondary screen to view information about the current screen. The Help action button displays help-text on all Test screens and some Tools screens. Help buttons located on secondary screens jump to specific topics located in the help file. The complete listings of the Help topics are located in the index, under the Help entry. 17.2 Alert Messages Alert Messages prompt you to perform system or administrative functions. Alert: You are approaching audiogram storage capacity. Consider deleting audiograms. Solution: 1. Do an audiometer backup. See Tools » Daily Tasks » Backup for instructions. 2. Delete audiograms. See Tools » Setup » Audiometer » Factory Defaults. Alert: Your audiogram memory is full. You will need to delete audiograms before proceeding. Solution: 1. Do an audiometer backup. See Tools » Daily Tasks » Backup for instructions. 2. Delete audiograms. See Tools » Setup » Audiometer » Factory Defaults. 65 HT Wizard Ultra Operation Manual 17.3 Error Codes Error codes display as alpha-numerical codes so that you may quickly reference the potential solution. Some error codes are immediate warnings, including both an onscreen visual and auditory signals. Some error messages have an audio feedback message played to the subject. For each error, the operator may respond using the HT Wizard Talk Over button or allowing the HT Wizard audio feedback to provide more instructions to the subject. Table 2 - Error Codes Error Code Description * Shift Greater Than 5 dB (for Daily Biological.) * Shift of 15 dB or Greater (for Subject Test.) AA Frequency Not Tested. DD Deleted Frequency. E0 RAM Error. E1 No response at 1 kHz. Did not obtain a subject response for the first ear tested at 1 kHz. Audio Feedback “Listen carefully, and make sure you hear the tone. Then quickly press and release the handswitch.” E2 1 kHz 25 Presentations No HTL. No validation at 1000 Hz. There is no validation for the first test ear response at 1000 Hz. This occurs if too much time has elapsed or 25 presentations without achieving threshold validation. Audio Feedback “As soon as you hear the tone even it is very faint, quickly press and release the handswitch.” E3 1 kHz Retest Error. Failed 1 kHz validity. The first ear fails the 1000 Hz retest. This validity check is performed by testing each ear twice at 1000 Hz. The thresholds must agree ± 5 dB. If the HT Wizard cannot get at 5 dB agreement the operator is notified by a beep or error message. Audio Feedback “As soon as you hear the tone, even it is very faint, quickly press and release the handswitch.” 66 HT Wizard Ultra Operation Manual Table 2 - Error Codes (Continued) E4 Handswitch Error. Re-instruct and restart Audio Feedback “The handswitch button must be released quickly. Press and release the handswitch button as soon as you hear the tone.” E5 Response No Tone. Responding when no tone is present. Audio Feedback “Be sure you hear the tone, then press and release your handswitch quickly.” E6 Error for Second Time. No validation on one or two frequencies. The retest did not validate the HTLs at the required one or two frequencies. A maximum of 25 tone presentations or 60 seconds are allowed at each test frequency. Failed for a second time. Audio Feedback None Switch to manual mode and administer a manual test at the missed frequencies. E7 Maximum Failed Frequencies. Failed to establish thresholds. Audio Feedback None E8 Hardware Error. EA 40 dB Difference Between Ears. The subject is automatically retested at the end of the test. No operator intervention required. EB Threshold Changed by = 15 dB. The subject is automatically retested at the end of the test. No operator intervention required. EC Adjacent Frequencies is = 50 dB. The test does not stop. The subject is automatically retested at the end of the test. No operator intervention required. 67 HT Wizard Ultra Operation Manual Table 2 - Error Codes (Continued) ED Any Frequency that has an HTL = 90 dB or HTL at 500 Hz = 30 dB. The subject is automatically retested at the end of the test. No operator intervention required. EE No responses for this Frequency. The subject is automatically retested at the end of the test. No operator intervention required. NR No Response for this Frequency. NSD Not Sufficient Data. 68 HT Wizard Ultra Operation Manual 18.0 Glossary This section contains an alphabetical list and descriptions of terms common to this industry. This may also include abbreviations, acronyms, metric prefixes, and symbols. A A ampere Ac alternating current Air conduction The course of sounds that are conducted to the inner ear by way of the outer ear and middle ear. A measurement made with the air conduction earphones of an audiometer that checks the hearing sensitivity of the entire auditory system. Ambient noise An all-encompassing noise associated with a given environment, being usually a composite of sounds from many sources near and far. See also background noise. ANSI American National Standards Institute, a standards-making body. Annual audiogram An audiogram obtained each year after establishing a baseline audiogram. ASA American Standards Association, now called ANSI, American National Standards Institute. Attenuate To reduce in strength or force. In sound, to reduce the intensity as expressed in decibels. Attenuation The reduction of energy (e.g., sound). Attenuator The loudness-level control on the audiometer. Audible range The frequency range over which normal ears hear (approximately 20 Hz through 20,000 Hz). Audio frequency Any frequency corresponding to a normally audible sound wave. Audio frequencies range roughly from 20 to 20,000 Hz. The word audio may be used as a modifier to indicate a device or system intended to operate at audio frequencies, for example, audio amplifier. Audiogram A test printout showing a graphic representation of audiometric findings showing hearing threshold levels as a function of frequency. A chart or table relating hearing level (for pure tones) to frequency. A record of hearing loss or hearing level measured a several different frequencies, usually 500 to 6000 Hz. The audiogram may be presented graphically or numerically. Also called a pure tone, air conduction audiogram or a threshold audiogram. Audiologist A person trained in the specialized problems of hearing and deafness. 69 HT Wizard Ultra Operation Manual Audiometer, pure tone A device for determining the thresholds of hearing. Pure tones in various frequencies are generated, and their levels are increased and decreased until thresholds are found. Outputs may include earphones for air-conduction testing, a bone-conduction vibrator for bone-conduction testing, and one or more loudspeakers for soundfield testing. This is also an electro-acoustical generator that provides pure tones of selected frequencies and of calibrated output, for the purpose of determining an individual’s threshold of audibility. The units are generally of three types: wide range, which covers the major portion of the human auditory range in frequency and sound pressure level and is used primarily for clinical and diagnostic purposes; limited range, which covers frequencies between 500 Hz and 6000 Hz and levels from 10 db to 70b dB; and the narrow range, which is even more restricted in frequency and sound pressure level than the limited-range audiometer. Audiometric reference level That sound pressure level (ASA, ISO, or ANSI) to which the audiometer is calibrated. A declared value, at a particular frequency, of the threshold of hearing for normal persons within a given age range, normally 18 to 25 years. Audiometry The science of measurement of hearing ability. Auditory A reference to the sense of hearing. background noise The total of all sources if interference in a system used for the production, detection, measurement, or recording of a signal, independent of the presence of the signal. Ambient noise detected, measured, or recorded with the signal becomes part of the background noise. Included in this definition is the interference resulting from primary power supplies (separately described as hum). band-pass filter A wave filter that has a large insertion loss for one frequency band, neither the critical nor cutoff frequencies being zero or infinite. Bandwidth When applied to a band-pass filter, bandwidth is determined by the interval of transmitted waves between the low and high cutoff frequencies. baseline A measurement of parameters at a specific point in time in order to define existing conditions and variations with time. baud rate Data transmission speed in events per second °C Celsius Calibration The electroacoustic or psycho acoustic determination that an audiometer is performing properly in terms of its acoustic output, attenuator linearity, frequency accuracy, harmonic distortion, etc. Cm Centimeter Compliance validation Verifies that the headphones or inserts that were calibrated with the audiometer are the ones used during the administering of a hearing test. Verifies that the electroacoustic ear used in the daily biological calibration verification is the same that was used to establish the baseline. B C 70 HT Wizard Ultra Operation Manual Contralateral see cross hearing. Coupler A device for acoustic loading of earphones. It has a specified arrangement of acoustic elements, and is provided with a microphone for measurement of the sound pressure, developed in a specified portion of the device. CPU central processing unit (of a computer) Cross-hearing The reception of a sound signal during a hearing test (either by air conduction or bone conduction) at the ear opposite the ear under test. Daily biological A system check that checks for audiometer hardware connections and prepares them for use. This is performed once every 24 hours to assure that the audiometer remains in calibration. The headset is placed on the OSCAR and the Daily Biological button is touched. A hearing test is performed on the OSCAR. When the test completes the results of the test are compared with the saved baseline for the OSCAR. If the results of the test are within acceptable limits (5 dB or less) the daily biological passes. If the test is not within acceptable limits (more than 5 dB) the daily biological fails, which may indicate that the audiometer may need calibration. Decibel (dB) A unit for measuring the loudness or intensity of sound. Decibel expresses the ratio between two sound pressures or two sound powers. One-tenth of a Bel. Known also as a non dimensional unit used to express sound levels. It is a logarithmic expression of the ratio of a measured quantity to a reference quantity. In audiometry, a level of zero decibels represents roughly the weakest sound that can be heard by a person with good hearing. The decibel is a unit of level when the base of the logarithm is the tenth root of ten, and the quantities concerned are proportional to power. Examples of quantities that qualify are power (any form), sound pressure squared, particle velocity squared, sound intensity, sound energy density, voltage squared. Thus the decibel is a unit of sound pressure-squared level; it is common practice, however, to shorten this to sound pressure level because ordinarily no ambiguity results from so doing. The decibel is one tenth of a bel. DC direct current Dosimeter A device worn on the person for determining the accumulated sound exposure with regard to level and time. DS data system Dynamic range That region of measurement of an instrument or system between the noise floor and maximum permissible distortion point. Earphone An electroacoustic transducer intended to be closely coupled acoustically to the ear. The term receiver should be avoided when there is a risk of ambiguity. EMC electromagnetic compatibility Excitation Stimulus. An external force (or other input) applied to a system that causes the system to respond in some way. D E 71 HT Wizard Ultra Operation Manual F °F Fahrenheit Filter A device for separating components of a signal on the basis of frequency. It allows components in one or more frequency bands to pass relatively unattenuated, and it greatly attenuates components in other frequency bands. A wave filter is a transducer for separating waves on the basis of their frequency. It introduces relatively small insertion loss to waves of one or more insertion loss to waves of other frequencies. Frequency The number of complete oscillations of a vibrating body per unit of time. In acoustics the unit of measurement is cps or Hz. The time rate of repetition of a periodic phenomenon. The frequency is the reciprocal of the period. In sound (as in electricity) the unit of measurement for frequency is the hertz (Hz) which equals one complete waveform (cycle) per second. Fundamental frequency The lowest frequency of vibration in a complex wave. GND electrical ground H hour Harmonic Any whole number multiple of the fundamental frequency of a complex wave. The fundamental frequency equals the first harmonic. Harmonic distortion A high-frequency disturbance that appears as distortion of the fundamental sine wave. Hearing The subjective response to sound and the nervous and cerebral operations which translate the physical stimuli into meaningful signals. G H Hearing threshold level (HTL) Amount (in decibels) by which the threshold of audibility for that ear exceeds a standard audiometric threshold. The number of decibels above an average normal threshold for a given signal. The hearing level dial of an audiometer is calibrated in dB HTL. Hearing loss Any loss of sound sensitivity, partial or complete, produced by abnormality anywhere in the auditory system. An increase in the threshold of audibility, at specific frequencies, as the result of normal aging, disease, or injury to the hearing organs. It is the symptom of reduced auditory sensitivity, synonymous with auditory impairment, when a specific cause can be ascribed. Also used, in a general sense, to describe the process of losing auditory sensitivity. Types of hearing loss are as follows: 1. Conductive. A hearing loss originating in the conductive mechanism of the ear. 2. Sensori-Neural. A hearing loss originating in the cochlea or the fibers of the auditory nerve. Formerly called perceptive deafness. 3. Noise Induced. A sensor neural hearing loss attributable to the effects of noise. 72 HT Wizard Ultra Operation Manual Hertz (Hz) Synonymous term for cycles per second. Most standardizing agencies have adopted hertz as the preferred unit of frequency. High-frequency loss Usually showing a hearing impairment, starting with 2000 Hz and beyond. Hughson Westlake A proven methodology using -10dB and +5dB steps to obtain the HTL (hearing threshold levels). Hz hertz (cycles per second) refers to measuring pitch. Most sounds fall into the “speech range” of about 300 to 3000 Hz. impedance The opposition to sound wave transmission. It is comprised of frictional resistance, mass, and stiffness and is influenced by frequency. intensity The power transmitted along a sound wave. The sound intensity measured in a specified direction at a point is the average rate at which sound energy is transmitted through a unit area perpendicular to the specified direction at the point considered. Only in plane or spherical free progressive sound waves is the intensity related to the average pressure p by the equation I=p2/pC where pC represents the characteristic impedance of air. In general, however, there is no simple relation between sound pressure level and intensity level. I/O Input/output Kilohertz (kHz) 1000 Hz LED Light-emitting diode Level In acoustics, the level of a quantity is the logarithm of the ratio of that quantity to a reference quantity of the same kind. The base of the logarithm, the reference quantity, and the kind of level must be specified. Examples of kinds of levels in common use are sound power level, sound-pressure-squared level, and sound intensity level. Loudness The subjective impression of the power of a sound. The unit of measurement is the tone. µ micro (10-6) Noise level A level of noise, the type of which must be indicated by further modifier or context. The physical quantity measured, the instrument used, and the bandwidth or other weighting characteristic must be indicated. For airborne sound, unless specified to contrary, noise level is the weighted sound pressure level, also called sound level; the weighting must be indicated. Noise reduction (NR) A decrease of the sound pressure level at a specified observation point. Noise reduction is also used to designate the differences in sound pressure levels existing at two different locations at a single time, when the designated structures (such as I K L M N 73 HT Wizard Ultra Operation Manual baffles or partitions are in position.) The term noise control is meaningful only when noise control components and the points of observation are fully specified. O Ω ohm outer ear The outermost portion of the hearing mechanism, filled with air. Its primary function is to carry sounds to the middle ear. Oscillation The back-and-forth swinging of a vibrating body. PCB printed circuit board P Percent impairment of hearing An estimate of a person’s ability to hear. It is usually based, as the result of an arbitrary rule, on the pure tone audiogram. The specific rule for calculating percent hearing loss varies from state to state. Impairment refers specifically to a person’s “illness or injury that affects his personal efficiency in the activities of daily living.” Disability has the additional medico legal connotation that an impairment reduces a person’s ability to engage in gainful activity. Impairment is only a contributing factor to the disability. See also hearing loss. Permanent threshold shift (PTS) The component of threshold shift which shows no progressive reduction with a passage of time when apparent cause has been removed. Pitch The subjective impression of the highness or lowness of a sound. PN part number Presbycusis A decline in hearing acuity that normally occurs with the aging process. Pulse rise time The interval of time required for the leading edge of a pulse to rise from some specified small fraction to some specified larger fraction of the maximum value. Pure tone A tone of only one frequency (i.e., no harmonics). A sound wave, the instantaneous sound pressure of which is a simple sinusoidal function of the time. Audibly, it is characterized by a singleness of pitch. Quality The sharpness of resonance of a sound system. The vividness or identifying characteristics of a sound. The subjective counterpart of spectrum. (Synonym: timbre.) RAM random access memory ROM read-only memory RS-232 industry standard for serial communications Q R 74 HT Wizard Ultra Operation Manual S s second Shift Difference between the current audiogram and the baseline at each frequency. Signal-to-noise-ratio The ratio between the rms signal level within a specified frequency band and the rms level of the electrical system noise within the same band. This S/N ratio is generally expressed in decibel notation. This S/N ratio establishes the dynamic range of the system as a function of frequency. Sound (a) The auditory sensation produced through the organs of hearing usually by vibrations transmitted in a material medium, commonly air. (b) Sound is an oscillation in pressure, stress, particle displacement, particle velocity, etc., in a medium with internal forces, for example, elastic, viscous, or the superposition of such propagated oscillations. In case of possible confusion, the term “sound wave” or “elastic wave” may be used for concept (b), and the term “sound sensation” for concept (a). Not all sound waves can evoke an auditory sensation; for example, ultrasound. The medium, in which the sound exists, is often indicated by an appropriate adjective; such as, airborne, waterborne, or structure-borne sounds. Sound level meter A device to measure sound level or weighted sound level, constructed in accordance with the standard specifications for sound level meters set up by ANSI. The sound level meter consists of microphone, an amplifier to raise the microphone output to useful levels, a calibrated attenuator to adjust the amplification to values appropriate to the sound levels being measured, and an instrument to indicate the measured sound level; optional weighting networks are included to adjust the overall frequency characteristic of the response. Sound pressure level (SPL) The sound pressure level, in decibels, of a sound is 20 times the logarithm to the base 10 of the ratio of the pressure of this sound to the reference pressure. The reference pressure shall be explicitly stated. The following referenced pressures are in common: (1) 0.0002 microbar, or (b) 1 microbar. Reference pressure (a) is in general use for measurements concerned with hearing and with sound in air, while (b) has gained widespread acceptance for calibration of transducers and various kinds of sound measurements in liquids. Unless otherwise explicitly stated it is to be understood that the sound is the effective sound pressure. Sound room A room designed to reduce the transmission of sound from the exterior to the interior. Used for hearing tests. Sound waves Vibratory motion caused by a vibrating body which transmits a series of alternating compressions and rarefactions (expansions) of the elastic medium. Stimulus see excitation. STS Standard threshold shift is a change in hearing threshold relative to the baseline audiogram of an average of 10 dB or more at 2K, 3K, and 4 KHz in either ear. STS/P Standard threshold shift with presbycusis, which takes aging into formula. Surge A sudden change in average RMS voltage level, with typical duration between 50 µs and 2 s. T 75 HT Wizard Ultra Operation Manual Temporary threshold shift (TTS) The component of threshold shift which shows progressive reduction with the passage of time when the apparent cause has been removed. The temporary hearing loss suffered as the result of noise exposure, if all or part of the loss is recovered during an arbitrary period of time when one is on longer subjected to the noise. Test printout see audiogram Threshold In audiology, the least audible sound-pressure level. Often defined operationally as the level of a sound at which it can be heard by an individual 50% of the time. tone (a) A sound wave capable of exciting an auditory sensation having pitch. (b) A sound sensation having pitch. Transient A brief voltage surge of up to several thousand volts, with a duration of less than 50 µs. USB Universal Serial Bus (USB) is a serial bus standard to interface devices. USB was designed to allow peripherals to be connected using a single standardized interface socket and to improve plug-and-play capabilities by allowing devices to be connected and disconnected without rebooting the computer (hot swapping). Other convenient features include providing power to low-consumption devices without the need for an external power supply and allowing many devices to be used without requiring manufacturer specific, individual device drivers to be installed. V volt V ac volts, alternating current V dc volts, direct current VGA Video Graphics Array w Width W Watt U V W 76 1162-0801 Rev A 04/08