Dual Channel Amplitude/slope Equalizer System - L3 Narda

Transcript

100 Davids Drive Hauppauge, New York 11788-2034 Tel: 631 436 7400 Fax: 631 436 7431 www. m i t e q . c o m MITEQ TECHNICAL NOTE 25T069 OCTOBER 2006 REV B DUAL CHANNEL AMPLITUDE/SLOPE EQUALIZER SYSTEM (DL1E) ________________________ SECTION 1 INTRODUCTION 1.1 GENERAL DESCRIPTION 1.1.1 PHYSICAL LAYOUT Figure 1-1. Front Panel Configuration Figure 1-2. Rear Panel Configuration Figure 1-3. Internal Configuration 2 1.1.2 FUNCTIONAL The Line Amplifier Unit with Slope Control provides two amplifiers with slope and amplitude control, two redundant hot swappable power supplies and a remote bus interface for monitoring and control via a remote computer. There is a 32 entry Event Log and continuous amplifier and power supply monitoring. 1.2 EQUIPMENT CHARACTERISTICS 1.2.1 MECHANICAL Weight............................................................................................................20 pounds nominal Overall Dimensions................................................................. 19” x 1.75” panel x 22” maximum Primary Power .......................................................................................................... 90-250VAC Frequency ..................................................................................................................... 47-63 Hz Power Consumption.............................................................................................................40 W Primary Power Input ........................................................................................................ IEC320 Fuse .................................................................................................................. 5x20mm (T1.0A) 1.2.2 REMOTE CONNECTION Remote Interface Connectors (J2, J3) RS422/RS485 (Standard) .............................................................................................. DE-9S RS232 (Option 17C) .................................................................................................... DB-25P Contact Closure (17D) ................................................................................................. DC-37S 10/100Base-T Ethernet (17H)......................................................................................... RJ-45 1.2.3 ENVIRONMENTAL Operating Ambient Temperature ..............................................................................................0 to +50°C Atmospheric Pressure................................................................................... Up to 10,000 feet Relative Humidity ........................................................................................ Up to 95% at 30°C Non-operating Temperature .........................................................................................................-50 to +70°C Atmospheric Pressure................................................................................... Up to 40,000 feet Shock and Vibration...................................................Normal handling by commercial carriers Relative Humidity ........................................................................................ Up to 95% at 40°C 3 SECTION 2 2.0 INSTALLATION 2.1 UNPACKING, STORAGE, RESHIPMENT Carefully open the shipping container and remove the equipment. Inspect the equipment thoroughly and report any damage. If the equipment is to be stored, it should be wrapped in plastic and kept in a clean, dry place. If the equipment is to be reshipped for any reason, wrap in heavy plastic and ship in a heavy (275 lb. test) double wall carton. At least three inches of a solid packing material should be used on all sides of the unit. The carton should be marked to indicate that it contains fragile electronic equipment. 2.2 MOUNTING THIS EQUIPMENT IS NOT FOR USE IN A DOMESTIC ENVIRONMENT. THE UNIT IS INTENDED FOR RACK MOUNTING. OPERATOR INJURY MAY OCCUR IF UNIT IS NOT PROPERLY MOUNTED. THIS EQUIPMENT MUST BE SECURELY MOUNTED. Slides are provided for mounting the controller in a standard 19" equipment rack. 2.3 TURN-ON PROCEDURE After mounting, make all external connections per Table 2-1. Apply power to the equipment by depressing the rear panel power On/Off switches. The System is now operational. 4 DESIGNATION Ground Lug Power Cords Summary Alarm Connector (J1) Remote Interface Connector (J2/J3) DESCRIPTION Connect the ground lug on the rear panel of the equipment to the Protective Earth connection of the building. Attach power cords to the rear panel AC power inlets marked “PSA” and “PSB”. Connect the other end to the power source. Refer to national wiring standards for the correct connection to the power source. The Summary Alarm connector is a contact closure status output indicating the status of the unit and it’s power supplies. See Paragraph 2.8 for wiring information. The Remote Interface connector is an optional connection. This allows the operator to monitor and control the equipment from a remote location. Table 2-1. External Connections 2.4 AMPLIFIER REPLACEMENT PROCEDURE A replacement amplifier can have different high and low current limits. Refer to the amplifier data sheet supplied for it’s ambient current draw. Check and reset (if necessary) the current limits to +/- 20% of the current level for the replacement amplifier. See the display operation section of this document for details regarding how to set the current limits. 2.5 POWER SUPPLY REPLACEMENT PROCEDURE Because of the interchangeability of PSA (Power Supply A) and PSB (Power Supply B), refer to Section 1.1.1 for the physical positions of the power supplies. • • • • • • • • • Turn off the power supply you wish to replace. Remove its line cord. Turn the black knob counter clockwise until the power supply comes loose. Pull the power supply by hand using the same knob as above. Place the new power supply in the same orientation as the old one. The power supplies in this unit are slotted to insure proper orientation. Slide the power supply in by hand. Turn the black knob clockwise until it is hand tight. Attach the line cord. Turn on the replacement power supply and verify proper operation. 5 SECTION 3 3.0 DEFINITIONS ACTIVE FAULT An Active Fault indicates that there is a problem in the Dual Channel Amplitude/Slope Equalizer system, which can adversely effect ideal system operation. The Active Faults that can be reported are: • An amplifier fault is active while the current drawn by the amplifier exceeds the high and low current limits that are programmed into the unit for that amplifier. From the factory, the current limits are set at +/- 20% of the nominal current draw at ambient temperature. • A Power Supply fault is active when a power supply exceeds +/- 8% of the nominal voltage rating at ambient temperature. Power Supply A and Power Supply B both have a 5.5V and a 24.5V supply; for the 5.5V source, the range is 5.0V to 6.0v, and for the 24.5V source, the range is 22.5V to 26.5V. Faults are suppressed for the first second after startup to make sure that all fault detectors have become stable. AMPLIFIER CURRENT LIMITS Current limits vary from amplifier to amplifier. Amplifier Current Limits are set at the factory. It is recommended that Amplifier Current Limits be changed by an operator only when an amplifier is being replaced in the field. ERROR TONE A beep lasting for one second indicates an invalid key press or screen timeout. 3.1 OPERATING MODES The operating modes of the RAU are selected from the front panel (in Local mode) or over the remote bus (in Remote mode). 3.1.1 AUTO MODE The Auto mode applies to the Redundant Amplitude/Slope Equalizer systems and is not a function of the Dual Channel Amplitude/Slope Equalizer systems. Therefore, the Dual Channel Amplitude/Slope Equalizer system will not switch to this mode. 6 3.1.2 MANUAL MODE Since the Dual Channel Amplitude/Slope Equalizer system does not have a redundancy mode, the MANUAL MODE is the normal operating mode of the Dual Channel Amplitude/Slope Equalizer system. 3.1.3 LOCAL MODE When the Dual Channel Amplitude/Slope Equalizer system is in the LOCAL control mode operational parameters can be changed from the front panel of the unit only. Commands sent to remotely change the operational parameters of the unit are rejected. Operating parameters of the unit can always be monitored remotely while the unit is in the local control mode. 3.1.4 REMOTE MODE In the REMOTE control mode, all operating parameters can be examined locally or remotely. Changes to operational parameters from the front panel are locked out and an error tone will sound. Operating parameters can only be changed from the remote ports while in the REMOTE control mode. 3.2 FRONT PANEL The front panel has been organized so that important information is available at a glance. Control functions and additional status information is available through a menu system and the front panel LCD. 3.2.1 STATUS INDICATORS • The Amplifier symbols on the front panel have dual color LED’s that display the status of each amplifier. A green LED indicates normal amplifier operation. The amplifier LED will turn red if a fault is detected on that amplifier. • The Power LED on the power supplies, at the back of the unit will light green when power is applied to the unit. • If a system fault occurs, the ALARM LED will light red indicating an Active Fault. The display will flash that an active fault has been logged. • The Remote LED will light amber if the unit is in Remote control mode. • The Manual LED will always be lit amber. The Auto LED will never be lit because the unit does not have redundancy mode. 3.2.2 FRONT PANEL OPERATION 3.2.2.1 KEYPAD NAVIGATION ENTER: Confirms operational entries. In most cases, data entry must be confirmed with an ENTER key press. Exceptions are Attenuation and Slope. MENU: Displays the Main Menu, or escapes out of the present screen. If a change is pending (needing confirmation), this key cancels the change without implementing it. The unit will always return back to the default title screen. 7 REMOTE: Changes the control mode between Remote and Local modes. The Up/Down arrows are used to choose the desired control mode and ENTER is pressed to accept the entry. MANUAL: Does nothing. The Dual Channel Amplitude/Slope Equalizer does not have a redundancy mode. ALARM: Displays the Alarm Menu, which will show any Active Faults and the Event Log. Choosing CLR will clear the event log. UP and DOWN Arrow Keys: Provide menu and cursor navigation. When in the MENU mode the different menu choices can be scrolled through. Inside a specific menu, when the cursor is at the far the left of the screen it will appear as a right arrow →. When the cursor appears as a right arrow the ↑↓ keys will move between the top and bottom lines of the display. When the cursor appears as a blinking block over a value, the arrows will change the value in that field. LEFT/RIGHT Arrow Keys: Provide cursor navigation within a menu screen. 3.2.2.2 LIQUID CRYSTAL DISPLAY The Liquid Crystal Display (LCD) consists of two rows of sixteen characters for each row. The LCD will display all system information. There is a MENU selection to adjust the contrast of the display. 3.2.2.3 BEEP OPERATIONS A valid key press will be acknowledged with a short beep. A keyboard entry error is indicated by a longer beep. 3.2.2.4 DISPLAY TIMEOUT After a 50-second period without any keys being pressed, the display will revert to the default screen and a one second beep will sound. The default screen is displayed in Figure 3.1. When the cursor is blinking, further input is required from the user. If five seconds pass without a key press, then an error tone will sound and the blinking cursor will revert to an arrow. 3.2.2.5 CURSOR OPERATIONS The cursor will take one of three forms: an ↑↓ arrow, a → arrow or a blinking square. The Up/Down arrow cursor indicates scrolling movement between menus. The arrow pointing to the right indicates the next field to be selected. The blinking square cursor is present when additional entry is expected. Without any input from the user for five seconds the blinking square cursor will timeout and return to its arrow form. After an additional fifty seconds of no activity the display will return to the default screen. 8 3.2.2.6 MENUS AND SCREEN OPERATIONS 3.2.2.7 DEFAULT SCREEN If not already displayed, use the MENU key to access the default screen. DUAL CHAN AMP/EQ DL1E-950145 * * * Exact Name and Model number vary from model to model. Figure 3-1. Default Screen Display The default screen displays the name and model number of the unit. At start-up, the unit defaults to this screen. In addition, if another screen is active and 50-seconds of no keyboard activity passes then the unit will default to this screen. If a new fault occurs a message screen indicating that the fault has been logged is briefly displayed. The display will toggle between the system fault and the default screen. This toggling of message and default screen will stop after any key is pressed. SYSTEM ALARM LOGGED Figure 3-2. System Alarm Notification Display 9 3.2.2.8 MAIN MENU If not already displayed, use the MENU key to access the Main Menu. The Main Menu is a series of screens that provide access to functions that do not have a dedicated key. Use the up and down arrow keys to scroll through the Main Menu screens in the order listed below. SCREEN “Current Monitor ” “ (Press ENTER) “ “ Set Slope “ “ (Press ENTER) “ “ Attenuation “ “ (Press ENTER) “ “ Date/Time “ “ (Press ENTER) “ “Contrast Adjust ” “ (Press ENTER) “ “ Remote Format “ “ (Press ENTER) “ “ Current Limits “ “ (Press ENTER) “ “ Voltage Monitor “ “ (Press ENTER) “ FUNCTION Display Current levels of all amplifiers. Display/Set Slope values. Display/Set Attenuation values. Display/Set real time clock. Adjust contrast. Display/Set Remote communication settings. (RS232, RS422, RS485, IEEE-488, Ethernet) Display/Set current limits of amplifiers. Display Voltage levels of both power supplies. Select a Screen: • • Use the UP or DOWN keys to select the desired screen. Press the ENTER key to select that screen. 3.2.2.9 CURRENT MONITOR SCREEN If not already displayed, use the MENU and arrow keys to select the CURRENT MONITOR screen, then press ENTER. A1: 155 mA* A2: 133 mA* * Exact current levels vary model to model. This screen updates to provide the latest readings from the current monitor of the amplifiers. See Section 2.0 for a definition of current limits. 10 3.2.2.10 SLOPE SCREEN If not already displayed, use the MENU and arrow keys to select the SLOPE screen, then press ENTER. «SLOPE1: 1.2 SLOPE2: 2.0 Change Slope: • • • • • Point the arrow cursor to the desired slope path. The UP and DOWN keys move the arrow cursor to choose the path. Use the RIGHT key to highlight the character in the slope value to change. UP and DOWN keys change the digit presently under the blinking cursor. RIGHT and LEFT keys move the cursor horizontally. If the cursor is moved all the way to the left (the cursor will turn into an arrow), any pending changes will be erased. ENTER or MENU keys both operate as an escape key. 3.2.2.11 ATTENUATION SCREEN If not already displayed, use the MENU and arrow keys to select the ATTENUATION screen, then press ENTER. «ATN1: 30.0 ATN2: 15.2 Change Attenuation: • • • • • Point the arrow cursor to the desired attenuator. The UP and DOWN keys move the arrow cursor to choose the path. Use the RIGHT key to highlight the character in the attenuation value to change. UP and DOWN keys change the digit presently under the blinking cursor. RIGHT and LEFT keys move the cursor horizontally. If the cursor is moved all the way to the left (the cursor will turn into an arrow), any pending changes will be erased. ENTER or MENU keys both operate as an escape key. 11 3.2.2.12 DATE/TIME SCREEN If not already displayed, use the MENU and arrow keys to select the DATE/TIME screen, then press ENTER. «DATE: 1/01/00 TIME: 00:01:23 While in the Date/Time screen, the Date and Time will be updated with the present time. While the changes are pending, and have not been confirmed (by an ENTER key press), the time and date on the screen will freeze. Canceling the changes pending by either escaping (the MENU key acts as an escape key) or allowing the screen to time out, will cause the internally kept time to reappear without being effected by the interruption. To Change the Time or Date: • • • • • Point the arrow cursor to either the Time or Date by using the UP and DOWN keys. Use the RIGHT key to highlight the character value to change. UP and DOWN keys change the digit presently under the blinking cursor. RIGHT and LEFT keys move the cursor horizontally. If the cursor is moved all the way to the left (the cursor will turn into an arrow), any pending changes will be erased. ENTER key to confirm changes to that line. 3.2.2.13 CONTRAST ADJUST SCREEN If not already displayed, use the MENU and arrow keys to select the CONTRAST ADJ screen, then press ENTER. CONTRAST ADJUST UP/DOWN ARROW Changes to the contrast are accepted without the need for the ENTER key to be pressed. To Change Contrast: • • • Press the UP key to darken the display. Press the DOWN key to lighten the display. ENTER or MENU keys both operate as an escape key to the Main Menu. 12 3.2.2.14 REMOTE FORMAT SCREENS If not already displayed, use the MENU and arrow keys to select the REMOTE FORMAT screen, then press ENTER. BUS:232 ADDR:64 «BAUD:9600 P:O REMOTE FORMAT screen varies with remote type: RS422/RS488 «BUS:4XX ADDR:64 BAUD:9600 P:O This section is not available to models equipped with the Contact Closure option as the remote bus interface. To Change Address: (ADDR) (RS232, RS422, and RS485 Options Only) • • • • Use LEFT, RIGHT, UP and DOWN keys to navigate the cursor to the “:” after “ADDR”. While the cursor is blinking, the UP and DOWN keys can be used to change the address; 64-95 for RS232, RS422 or RS485. RIGHT and LEFT keys still move the cursor horizontally, and cancel any pending changes. Press ENTER key to confirm changes. To Change Baud Rate: (BAUD) (RS232, RS422, and RS485 Options Only) • • • • Use LEFT, RIGHT, UP and DOWN keys to navigate the cursor to the “:” after “BAUD”. While the cursor is blinking, the UP and DOWN keys can be used to change the baud rate: from 300, 600, 1200, 2400, 4800, 9600, and 19200. RIGHT and LEFT keys still move the cursor horizontally, and cancel any pending changes. Press ENTER key to confirm changes. To Change Communications Bus: (BUS) (RS422 and RS485 Options Only) • • • • Use LEFT, RIGHT, UP and Down keys to navigate the cursor to the “:” after “BUS”. While the cursor is blinking, the UP and DOWN keys can be used to change the bus to either RS422 (422) or RS485 (485). RIGHT and LEFT keys still move the cursor horizontally, and cancel any pending changes. Press ENTER key to confirm changes. 13 To Change Parity: (P) (RS232, RS422 and RS485 Options Only) • • • • Use LEFT, RIGHT, UP, and DOWN keys to navigate the cursor to the “:” after “P”. While the cursor is blinking, the UP and DOWN keys can be used to change the parity to Odd (O), Even (E), or None (N). RIGHT and LEFT keys still move the cursor horizontally, and cancel any pending changes. Press ENTER key to confirm changes. 3.2.2.15 ETHERNET REMOTE FORMAT SCREENS IP Address ↑ IP ADDRESS: ↓ Subnet Mask ↑ SUBNET MASK: ↓ Gateway ↑ GATEWAY: ↓ Password ↑ PASSWORD: ↓ 11111 To Change IP Address • • • • • Use RIGHT arrow key to navigate the cursor to the first character of the first octet of the IP Address. While the cursor is blinking, the UP and DOWN keys can be used to change the value of the digit. RIGHT and LEFT arrow keys move the cursor horizontally. Move the cursor through each digit of the four octets and using the Up/Down arrow keys set each digit of the IP Address. Press ENTER key to accept the change. Use the down arrow to select the Gateway screen or use the MENU key to get back to the MAIN menu. To Change the Ethernet Gateway • • • • • Use RIGHT arrow key to navigate the cursor to the first character of the first octet of the Gateway. While the cursor is blinking, the UP and DOWN keys can be used to change the value of the digit. RIGHT and LEFT arrow keys move the cursor horizontally. Move the cursor through each digit of the four octets and using the Up/Down arrow keys set each digit of the Gateway. Press ENTER key to accept the change. Use the down arrow to select the Subnet Mask screen or use the MENU key to get back to the MAIN menu. 14 To Change the Subnet Mask • • • • • Use RIGHT arrow key to navigate the cursor to the first character of the first octet of the Subnet Mask. While the cursor is blinking, the UP and DOWN keys can be used to change the value of the digit. RIGHT and LEFT arrow keys move the cursor horizontally. Move the cursor through each digit of the four octets and using the Up/Down arrow keys set each digit of the Subnet Mask. Press ENTER key to accept the change. Use the down arrow to select the Password screen or use the MENU key to get back to the MAIN menu. To Change the Password • • • • • Use RIGHT arrow key to navigate the cursor to the first character of the first character of the Password. While the cursor is blinking, the UP and DOWN keys can be used to change the value of the digit. RIGHT and LEFT arrow keys move the cursor horizontally. Move the cursor through each digit of the five digits of the Password. Use the Up/Down arrow keys set each digit of the Password. Press ENTER key to accept the change. Use the down arrow to go back to the IP Address or use the MENU key to get back to the MAIN menu. NOTE: When all Ethernet parameters have been set, turn off all power to the Dual Channel Amplitude/Slope Equalizer system. Turn the power back on the unit will be set to the IP Address and the other parameters that have just been set. 3.2.2.16 CURRENT LIMIT SCREEN If not already displayed, use the MENU and arrow keys to select the CURRENT LIMIT screen, then press ENTER. A1«LO:100 HI:300 A2 LO:100 HI:300 The initial Amplifier Current Limits are set in the factory. It is recommended that Amplifier Current Limits be changed by an operator only when an amplifier is being replaced in the field. To Change Current Limit: • • • • Point the arrow cursor to the desired amplifier Current Limits. The UP and DOWN keys move the arrow cursor. If the desired Current Limits are not on the display, the other limit(s) may be reached by using the UP and DOWN keys. Use the RIGHT key to select the current limits to be changed. UP and DOWN keys change the digit presently under the blinking cursor. RIGHT and LEFT keys move the cursor horizontally. If the cursor is moved all the way to the left (the cursor will turn into an arrow), any pending changes will be erased. 15 • Press the ENTER key to confirm changes to that line. 3.2.2.17 VOLTAGE MONITOR SCREEN If not already displayed, use the MENU and arrow keys to select the VOLTAGE MONITOR screen, then press ENTER. PSA:+5.6V +24.5V* PSB:+5.5V +24.5V* * Slight variation should be expected. This screen updates to provide the latest readings from the voltage monitors of the power supplies. The two digit fields on the left side of the LCD indicate the measured voltage of the 5.5V source of each power supply. The three digit fields on the right indicate the level of the 24.5V source for each power supply. No adjustments can be made from this screen. 3.2.2.18 FAULT MENU If not already displayed, press the ALARM key to display the Alarm Menu. «02 ALARMS 32 EVENTS CLR The Fault Menu displays the number of active faults and the number of events stored in the Event Log. The Fault Menu also provides access to the Active Fault screen and the Event Log screen. To View Active Faults: If there are no active faults, then the user will not be able to access the FAULT sub-screen. • • Point the arrow to ”ALARMS” using the UP, DOWN, LEFT, and RIGHT keys. Press ENTER key to select. The display will read: ALARM 01 OF 01 A1 Fault • • There is one screen for each active alarm, press the UP and DOWN keys to scroll through them. If there is only one active alarm, then these keys will not have any function. MENU key operates as an escape key and returns you to the FAULT MENU screen. 16 To View Events: If there are no events logged, then the user will not be able to access the EVENT sub-screen The events are ordered chronologically, the most recent event will have the highest number, and it will be displayed first. • • Point the arrow to ”EVENTS” using the UP, DOWN, LEFT, and RIGHT keys. Press ENTER key to select. The display will read: «32 OF 32 A1 Fault • • TIME There is one screen for each event in the Event Log, press the UP and DOWN keys to scroll through them. If there is only one event in the log, then these keys will not have any function. To view the time the event was logged, use the LEFT and RIGHT keys to point the arrow cursor to “TIME”, press the ENTER key, and the display will read: «DATE: 1/01/00 TIME: 00:01:01 To go back to the related event, press the MENU key (to escape) or wait five seconds. • • ENTER key selects the TIME of EVENT sub-screen for the event presently displayed. MENU key operates as an escape key and returns you to the ALARM MENU screen. 3.2.2.19 REMOTE/LOCAL SCREEN If not already displayed, use the REMOTE key. «REMOTE LOCAL To Change the Remote/Local Control mode: • • Press the UP and DOWN arrow keys to move the cursor to the desired control mode. Press the ENTER key to confirm. 17 3.3 REMOTE OPERATIONS The equipment is supplied standard with an RS485/RS422 bus. As an option, the equipment can be supplied with RS232, contact closure or Ethernet remote control interfaces. The command structures for the serial buses are identical. 3.4 SERIAL REMOTE PROTOCOL (RS485/RS422/RS232) The command structures for the serial buses; RS485, RS422 and RS232 are identical. All transmissions are multi-byte sequences beginning with a header byte and ending with a trailer byte and checksum byte. The transmitted bytes are all ASCII printable characters in the range of 20H to 7EH. Serial data format is a 10 bit sequence consisting of 1 Start, 7 Data, 1 Parity, and 1 Stop bit. All characters, including the checksum character, are checked for parity. If any character in a command message contains an error (parity, framing or overrun) or the checksum is incorrect, the command is ignored and no response is made. The remote parameters: Address, Baud Rate, and Parity are programmable from the front panel. The response time from command to acknowledge is 100 ms. maximum. All messages addressed to the equipment are acknowledged with a response message. The unit continually monitors the communication bus and will accept commands addressed to it. When in Local control mode, the receipt of any SET commands will be ignored and the unit will respond with an error code. The response time from command to acknowledge is 100 ms. maximum. Since all bytes are ASCII printable characters, a compatible terminal may be used to control the equipment or monitor traffic on the communication bus. 3.5 SERIAL MESSAGE FORMAT The serial message format is as follows: HEADER - ADDRESS - COMMAND/ERROR CODE - PARAMETERS - TRAILER CHECKSUM The Header byte is 7BH, ASCII character "{". The address may take on the values from 64 to 95 decimal (40H to 5FH). Legacy commands are fully supported in this unit. A larger, more complete set of commands are in the format of a three ASCII character identifier preceded by an ASCII “?” or “$”. Query commands are preceded by a “?”. Set commands are preceded by a “$”. Query commands are used to examine system parameters while SET commands are intended to modify system parameters. Parameters are all ASCII printable characters in the range of 20H to 7EH. Numeric parameters are sent MSD first, LSD last. Values which do not adhere to the command format, or are beyond the allowable range, will be rejected and cause the unit to respond with an error code. The Trailer byte is 7DH, ASCII character "}". 18 The checksum byte is the sum modulo 95 of all message characters beginning with the header byte up to and including the trailer byte. The value 32 is subtracted from each character value before taking the modulo 95 sum. The value 32 is added to the final sum to obtain the checksum value. All values are in decimal. Checksum = MOD [(character value - 32), 95] + 32 Below is a program, written in the ‘C’ programming language that illustrates the checksum calculation. char check_sum(char*,char); char check_sum(array,mes_len) /* return the checksum character for the message in array */ /* subtract 32 from each character before taking modulo 95 sum */ /* add 32 to the final sum */ /* mes_len = message length */ char array[32],mes_len; { char i,sum; sum = 0; for ( i = 0; i < mes_len; i++ ) { sum = sum + ( array[i] - 32 ); if ( sum >= 95 ) sum = sum - 95; } return(sum + 32); } 19 3.6 COMMAND AND ERROR CODE SUMMARY REMOTE QUERY COMMANDS ASCII Character String ALR ATT CLK EAD EGW ESB EST LIM LOG MOD SLP STA VLT Q R Function System Fault Status (same as Q) Attenuation Internal Clock/Calendar Ethernet IP Address Ethernet Gateway Ethernet Subnet Mask Extended Status Amplifier Current Limits Event Log Mode (same as R) Slope On-line/Standby Status Voltage and Current Readings System Fault Status Mode ERROR CODES Character Codes a b c d Function Command not recognized Illegal parameter or parameter out of range Control unit in Local Mode Busy 3.6.1 SYSTEM FAULT STATUS = ALR There is no SET command. The QUERY command requires no parameters. Remote Command Sequence: ?ALR Response: ?ALRabc ?ALR: Status indicator a-i: "0" or "1" ASCII numeric character 0 = No fault 1 = Fault a = Any Amplifier Alarm b = Any Switch Alarm c = Any Power Supply Alarm or Query Command: Q Unit Response: Qabc 20 3.6.2 ATTENUATION = ATT The SET command requires two parameters. One is a single digit in length representing the amplifier path, and the other which is three digits in length and represents the attenuation in tenths of a dB. No decimal points are used. The attenuation values increment in 0.2 dB steps. For values less than 10.0 dB leading zeros must be used. Remote Command Sequence: $ATTnTttt Unit Response: $ATT The QUERY command requires one parameter, a single digit in length representing the amplifier path. The reply will consist of two parameters one a single digit in length indicating the amplifier path and one that is three digits in length indicating attenuation in tenths of a dB. No decimal points are used. Leading zeros will be used in the response. Remote Command Sequence: ?ATTn Unit Response: ?ATTnTttt ATT: Attenuation indicator n: Single digit ASCII numeric character, indicating amplifier path. “1” or “2”. T: Attenuation parameter indicator ttt: Three digit ASCII numeric characters, MSD transmitted first, LSD last indicating attenuation in tenths of a dB. 3.6.3 INTERNAL CALENDAR/CLOCK = CLK The SET command requires a twenty-character parameter that sets the date and time of the internal calendar/clock. Remote Command Sequence: $CLKYyyyyMmmDddHhhNnnSss Response: $CLK The QUERY command requires no parameters. Remote Command Sequence: ?CLK Response: ?CLKYyyyyMmmDddHhhNnnSss Y: Year indicator yyyy: Year, 4-digit ASCII numeric characters, MSD transmitted first, LSD last. M: Month indicator mm: Month, 2-digit ASCII numeric characters D: Day indicator dd: Day, 2-digit ASCII numeric characters H: Hour indicator hh: Hour, 2-digit ASCII numeric characters N: Minute indicator nn: Minute, 2-digit ASCII numeric characters 21 S: Second indicator ss: Second, 2-digit ASCII numeric characters 3.6.4 ETHERNET IP ADDRESS = EAD The SET command requires one parameter 12 characters in length indicating the Ethernet IP address. Remote Command Sequence: $EADnnnnnnnnnnnn Unit Response: $EAD The QUERY command requires no parameters. Remote Command Sequence: ?EAD Unit Response: ?EADnnnnnnnnnnnn nnnnnnnnnnnn = IP address 3.6.5 ETHERNET GATEWAY = EGW The SET command requires one parameter 12 characters in length indicating the Ethernet Gateway. Remote Command Sequence: $EGWnnnnnnnnnnnn Unit Response: $EGW The QUERY command requires no parameters. Remote Command Sequence: ?EGW Unit Response: ?EGWnnnnnnnnnnnn nnnnnnnnnnnn = Gateway 3.6.6 ETHERNET SUBNET MASK = ESB The SET command requires one parameter 12 characters in length indicating the Ethernet Subnet Mask. Remote Command Sequence: $ESBaaabbbcccddd Unit Response: $ESB The QUERY command requires no parameters. Remote Command Sequence: ?ESB Unit Response: ?ESBaaabbbcccddd aaabbbcccddd = ethernet subnet mask 22 3.6.7 EXTENDED STATUS = EST There is no SET command. The QUERY command requires no parameters. Remote Command Sequence: ?EST Response: ?ESTabcdefghijklmno a-o: "0" or "1" or “-“ ASCII character 0 = No fault 1 = Fault - = Not Applicable a b c d e f g h i j k l m n o A1 Status A2 Status = NA = NA = NA = NA = NA = NA Power Supply A Status Power Supply B Status Remote Control = 0, Local Control = 1 Manual Mode = 0 = NA = NA = 1 = New Log entry or 0 = No New Log entry 3.6.8 AMPLIFIER CURRENT LIMITS = LIM The SET command requires three parameters. One is a single digit in length representing the amplifier path. The other two are both three characters in length representing the high and low amplifier current limits in milliamps. Remote Command Sequence: $LIMaLlllHhhh Response: $LIM a = A1 or A2 (1or 2 respectively) lll = Low limit in milliamps hhh = High limit in milliamps The QUERY command requires only one parameter, a single digit character representing the amplifier path. Remote Command Sequence: ?LIMa Response: ?LIMaLlllHhhh 23 3.6.9 EVENT LOG = LOG The SET command clears the units event log of its contents. Remote Command Sequence: $LOG00 Response: $LOG The QUERY command requires a two-digit parameter indicating the log entry to be examined. If entry 00 is queried, the unit returns the number of log entries currently in the log, otherwise the unit responds with the date, time and a code indicating the event that has occurred. The Event Log will store up to 32 events maximum. Additional events will cause the oldest events to be aged out. Remote Command Sequence: ?LOGgg Response: ?LOGggCyyyymmddhhnnssEeee gg: Two digit ASCII numeric characters, MSD transmitted first, LSD last. Indicating the log entry queried. C: Calendar/Clock indicator. yyyy: mm: dd: hh: nn: ss: E: eee: Year, 4 digit ASCII numeric characters, MSD transmitted first, LSD last. Month, 2 digit ASCII numeric characters Day, 2 digit ASCII numeric characters Hour, 2 digit ASCII numeric characters Minute, 2 digit ASCII numeric characters Second, 2 digit ASCII numeric characters Event indicator. Event Code 000 to 999 represents the following: Logged Events Event Startup Current limit change Reserved for Future Use Date/Time change Attenuation change (Atten 1) Attenuation change (Atten 2) Reserved for Future Use Amplifier 1 Fault Amplifier 2 Fault Reserved for Future Use Amplifier 1 Recovery Amplifier 2 Recovery Reserved for Future Use Power Supply A fault Power Supply B fault Power Supply A recovery Power Supply B recovery Remote/Local change Slope change (Path1) Slope change (Path2) Reserved for Future Use Code 1 2 3-9 10 11 12 13-14 15 16 17-22 23 24 25-30 31 32 33 34 35 36 37 38-39 24 3.6.10 MODE (REMOTE/REDUNDANCY) = MOD There is no SET command. The QUERY command requires no parameters. Remote Command Sequence: ?MOD Response: ?MODab a = 0 = Remote a = 1 = Local b = 0 = Manual b = 1 = Auto or Remote Command Sequence: R Response: Rab 3.6.11 SLOPE = SLP The SET command requires three parameters. The first is a single digit character representing the amplifier path. The second a single character representing the sign of the slope. The third is a two-digit parameter representing the slope in dB. Remote Command Sequence: $SLPasbb Response: $SLPasbb The QUERY command requires one parameter: a single digit character representing the amplifier path. Remote Command Sequence: ?SLPa Response: ?SLPasbb a = amplifier path (1 or 2) s = sign of slope, either '-' or '+' bb = slope angle in tenths of dB 3.6.12 STATUS = STA There is no SET command. The QUERY command requires no parameters. Remote Command Sequence: ?STA Response: ?STAabcdef a = amplifier fault represented by an ASCII number from '0' to 'F' where each fault has the following bit weight: A1 FAIL = 1 A2 FAIL = 2 25 b=0 c = ASCII number from '0' to 'F' where each fault has the following bit weight: PSA FAIL = 1 PSB FAIL = 2 Remote Control Mode = 4 (Local = 0) Auto Mode = 8 (Manual = 0) d=0 e=0 f = 1 = Event Log Change (0 = No Event Log Change) 3.6.13 VOLTAGE AND CURRENT READINGS = VLT There is no SET command The Query command requires one parameter which is a single digit representing the source to be queried. Remote Command Sequence: ?VLTx Response: ?VLTxddd x = Requested voltage or current a = PSA 5.5V c = PSB 5.5V e = A1 ma g = A3 ma b = PSA 24.5 V d = PSB 24.5 V f = A2 ma h = A4 ma ddd = voltage in tenths of a volt or current in milliamps 3.7 RS422 BUS TERMINATION A jumper selectable 120 ohm termination resistor is connected across the DATA IN +/- and DATA OUT +/- terminals. Installing E1 places the resistor across the DATA OUT terminals and E2 across the DATA IN terminals. 3.7.1 RS485 BUS TERMINATION A jumper selectable 120 ohm termination resistor is connected across the DATA +/DATA terminals. Installing E1 places the resistor across the terminals. 26 3.8 CONNECTOR WIRING INFORMATION RS232 (J2) PIN DESIGNATION 2 Rx Data 3 Tx Data 5 Ground 7 RTS 8 CTS RS485 AND RS422 (J2 and J3) 1 Ground 3 Data Out 5 Data In 7 Data Out + 9 Data In + Table 3-1. Remote Interface Connections CONTROL UNIT ETHERNET INTERFACE CONNECTOR (J3) RJ-45 PIN# WIRE COLOR 10BaseT SIGNAL NAME 1 White/Orange Transmit+ 2 Orange Transmit3 White/Green Receive+ 4 Blue Un-used 5 White/Blue Un-used 6 Green Receive7 White/Brown Un-used 8 Brown Un-used Table 3-2. Ethernet Interface Connections DESCRIPTION SUMMARY ALARM SUMMARY ALARM SUMMARY ALARM OUTPUTS (J1) PINS NORMAL 4, 5 OPEN 5, 6 CLOSED FAULT CLOSED OPEN Table 3-3. Summary Alarm Connector 27 END 1 1 2 3 4 5 6 7 8 DIRECT CABLE WIRING COLOR END 2 White/Orange 1 Orange 2 White/Green 3 Blue 4 White/Blue 5 Green 6 White/Brown 7 Brown 8 SIGNAL Tx+ TxRx+ Unused Unused RxUnused Unused CROSSOVER CABLE WIRING END 1 COLOR END 2 1 White/Orange 3 2 Orange. 6 3 White/Green 1 4 Blue 4 5 White/Blue 5 6 Green 2 7 White/Brown 7 8 Brown 8 Table 3-4. Ethernet Cable Wiring DL1E STATUS OUTPUTS (Contact Closure) (J2) DESCRIPTION (STATUS) CLOSED COMMON Local 10 22 Remote 28 22 System Normal 24 30 System Fault 5 30 A1 Normal 31 6 A1 Fault 12 6 A2 Normal 7 13 A2 Fault 25 13 Signal/Frame Ground OPEN 28 10 5 24 12 31 25 7 4 Table 3-5. Status Output Connector (Contact Closure Option Only) J2 28 4.0 ETHERNET INTERFACE The Control Unit is equipped with an Ethernet Interface feature permitting control and monitoring via a 10 or 100 Mbps Ethernet connection. Available interface protocols are HTTP (web access), SNMP (Simple Network Management Protocol), and Telnet. The use of standard protocols makes it possible to provide (password-protected) access to the Control Unit from any location in the world where an internet connection is available 4.1 INSTALLATION 4.1.1 CONNECTION The unit is shipped from the factory with a statically assigned IP address. The unit can be connected to the facility Local Area Network (LAN) network via an industry-standard 10baseT RJ45 cable. The cable should be a “direct” cable, not a “crossover” cable. Before connecting the unit to the LAN, obtain a valid IP address from a network administrator. The unit then must be re-configured to that static IP address (see Paragraph 4.1.3). The unit may also be connected directly to a PC without a LAN. To connect directly to the PC a “crossover” cable must be used. The unit then must be set to a Static IP address to communicate with the computer (see Paragraph 4.1.3). 4.1.2 SET UP Setup of the Ethernet Interface should be attempted only after the unit is fully installed and functioning in accordance with the Operation and Maintenance (O&M) Manual. Once operating, the Ethernet Interface may be configured. 4.1.3 CONFIGURING INTERNET PROTOCOL (IP) OPERATING PARAMETERS An Internet Protocol (IP) address and associated parameters must be configured in the unit so the controlling device can address it. Normally, the individual or organization managing the facility’s LAN assigns this address. Three parameters will be required: IP Address (Factory setting 192.168.1.1) Subnet Mask (Factory setting 255.255.255.0) Gateway (Factory setting 0.0.0.0) For the direct connection to a PC any address can be chosen but the PC must also be configured correctly. In this configuration, the PC must be configured with a Static IP address. The procedure for this varies between operating system types and versions. Consult the operating manual or help files available with the computer to be used to determine the proper procedure. The computer must be configured with the same Subnet Mask as the unit, but a different IP address for it to connect properly. For connecting with the unit set to the IP address in the example above, the following settings are recommended for the PC: IP Address (Corresponding PC setting 192.168.1.2) Subnet Mask (Corresponding PC setting 255.255.255.0) Gateway (Corresponding PC setting 0.0.0.0) 29 4.1.4 CONFIGURING VIA ETHERNET If the unit can be contacted with the factory IP setting, the IP setting may be changed via the web interface. In a situation where the default IP parameters are incompatible with the facility LAN; the system may be temporarily attached directly to a PC as described in Paragraph 4.1.3 (above) so the IP parameters may be set. The connection and configuration may be verified from a PC attached to the LAN using the network “ping” command. From a command prompt, enter “ping ” The response will indicate whether a connection was established. 4.2 ACCESSING THE SYSTEM 4.2.1 ACCESS VIA THE WEB INTERFACE All system settings may be queried or modified via the Web Interface. The web page designs have been optimized for use with the Microsoft Internet Explorer (MSIE) Version 5.0 web browser, or higher. Use of Cookies must be enabled (see the TOOLS|INTERNET OPTIONS|PRIVACY setting). Web access may function properly, or with somewhat degraded performance, using other browsers of the same vintage. Browsers of earlier vintage are not recommended. To connect to the unit, launch the web browser on any PC connected to the same LAN, and enter the address http:// A sign-on page requesting the password should be displayed. (See Appendix B for information on configuring for access to the unit by name instead of IP address). The default password is “11111”. The operator may navigate between the available pages by clicking on the button images located about 1/3 of the way down from the top of the screen. To set an operating parameter: Make the appropriate changes on that screen, then change the (screen locked) pull-down to UNLOCKED, and press the Submit or other applicable button. 30 The following table lists the functions available on each web page: Home Page Function Name Amplifier Settings (per Channel) Function Name IP Address IP Subnet Mask IP Gateway System Contact System Name System Location Read Community Write Community Trap Destination Function Name Set Clock Function Name Enable Telnet Enable Re-flash Send Test Trap Screen Unlock Alarm Re-fresh rate Web Timeout Unit Name Old Password New Password Confirm Password Function Name Clear Event Log (N/A) Description View or set Attenuation, Slope, Current Limits, Monitor Actual Amplifier Currents Communications Page Description View or set the system IP address (changing this value will reset the system) View or set the system IP Subnet Mask (changing this value will reset the system) View or set the system IP Gateway (changing this value will reset the system) View or set the SNMP System Contact parameter View or set the SNMP System Name parameter View or set the SNMP System Location parameter View or set the SNMP Read Community parameter (enter a long arbitrary string to make SNMP inaccessible) View or set the SNMP System Contact parameter (enter a long arbitrary string to make SNMP inaccessible) View or set the SNMP Trap destination address Time Page Description View or set the system real-time clock functions of the unit Miscellaneous Page Description Permit or prevent Telnet access Permit or prevent firmware update Send single SNMP Test Trap Unlock Web screens View or set how frequently the alarm/fault indications will be refreshed on the Logs page View or set the time before a web user is logged off due to inactivity. View or set the assigned name Update the system password (1-5 digits). All three values must be entered. If the old password does not match the existing password, or the two new password entries are different, the update will not occur. Event Log Page Description Clears the Event Log Logged System Faults and Events are displayed here Table 4-1. Web Functions Defined 31 4.2.2 ACCESS VIA SNMP (AVAILABLE SOON) The unit may be accessed and monitored via the Simple Network Management Protocol (SNMP). SNMP is designed for control of network elements from a central management point. The SNMP Management Information Base (MIB) file for the system, available from MITEQ defines the specifics of the interface. This file is read by the chosen SNMP management tool to provide an “understanding” of the interface. The MIB file is in a format that can be read with any text editor. Do NOT modify this file. SNMP operating parameters may be set on the COMMS web page. If SNMP operation is not desired, this feature may be rendered inaccessible by inserting a long arbitrary string in the Read Community and Write Community fields. 4.2.3 ACCESS VIA TELNET The unit may be accessed via Telnet. There is no special protocol on the Telnet channel; the unit will expect the same commands, and offer the same replies, as via the serial port. Please see the Remote Command set listed in Section 3.6 of this document. Telnet access must first be enabled on the COMMS web page. If Telnet is not being used it is recommended that it be left disabled for security reasons. When a Telnet connection is established, the unit will request the password (five ASCII characters), which should be sent in the standard MITEQ wrapper (‘{‘

’}’). For convenience the unit will also accept the password and commands outside of the MITEQ wrapper. Once the connection is established, standard serial commands may be sent and responses will be received. Logout is automatic when the Telnet connection is broken. To re-establish the connection the password will have to be sent to the unit again. 32