Transcript
Sigma-Tek 1U661-001 Radio Control Panel
Operator’s Manual
Pub. No. 86M114
1U661-001 Operator’s Manual
Sigma Tek, Inc.
1U661-001 Operator’s Manual
TABLE OF CONTENTS 1.0 1.1 1.2 2.0 2.1 2.2 2.3 2.4 2.5 3.0 3.1 3.2 3.3 3.4 4.0 4.1 4.2 4.3
Rev. A
REVISION RECORD
GENERAL ...................................................................................... 1 DESCRIPTION ........................................................................... 1 THEORY OF OPERATION......................................................... 2 VHF COMMUNICATION MODULES ............................................. 6 OPERATING PROCEDURE ...................................................... 7 MEMORY STORE & RECALL PROCEDURES ......................... 7 TEST FUNCTION ....................................................................... 9 SQUELCH .................................................................................. 9 CHANNEL SPACING ................................................................. 9 NAVIGATION MODULES ............................................................ 11 OPERATING PROCEDURE .................................................... 12 MEMORY STORE / RECALL ................................................... 12 TEST FUNCTION ..................................................................... 14 MARKER BEACON SENSITIVITY ........................................... 14 ADF MODULE .............................................................................. 15 OPERATING PROCEDURE .................................................... 16 MEMORY STORE / RECALL ................................................... 16 TEST FUNCTION ..................................................................... 18
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28 January 2004
Rev. A
DESCRIPTION OF CHANGE Original Issue
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1U661-001 Operator’s Manual
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1.1 DESCRIPTION
The RCP contains five (5) independent radio control modules, one per radio, and each is similar in construction. All modules have a front panel which consists of a display, a frequency selector, and a number of control switches. Housed in an aluminum enclosure are three (3) or four (4) printed circuit boards (PCBs).
The 1U661-001 Radio Control Panel (RCP) was designed to remotely tune two (2) VHF COMM transceivers, two (2) VHF NAV/DME receivers, and one (1) Automatic Direction Finding (ADF) receiver.
The microcomputer (MCU) board is common to all modules. It performs the control and computational functions for each module, including all input and output tasks, and providing service to the radio.
The RCP tunes within two (2) VHF COMM frequency ranges. If a Collins VHF 22C is installed, the accessible frequency range is from 118.00(0) to 136.99(0) MHz in either 25 KHz or 8.33 KHz increments (switch selectable). If a Collins VHF 22D is installed, then the available tuning range is from 118.00(0) to 151.97(5) MHz in 25 KHz or 8.33 KHz increments from 118.00 to 136.99, and in 25 KHz increments from 137.00(0) MHz to 151.95(5) MHz.
The power supply board is also common to all modules. Its main function is to derive power from the aircraft and convert it to those voltages required by the internal circuitry. This board includes input protection circuits to prevent damage that may be caused by lightning.
1.0 GENERAL
The NAV/DME tuning range is from 108.00 to 117.95 MHz in 50 KHz increments. Tuning range for the ADF is from 190.0 to 1799.5 KHz in 0.5 KHz increments. Being able to pre-select frequencies provides the first level of memory. Ten (10) additional memory locations, or channels, can be accessed by pressing the MEM buttons. Audio volume controls with integrated power Off switches are included for both the VHF COMM and NAV modules. The ADF volume does not include a power Off function.
There are two (2) types of boards that provide the radio interfaces. A parallel tuning interface board generates ARINC 410 output signals that are used to tune the NAV / DME receivers and the ADF receiver. The Commercial Standard Digital Bus (CSDB) interface board is used in the VHF COMM modules to serve as an interface between the module and a Collins VHF-22 (C or D) transceiver.
1.2 THEORY OF OPERATION
Other typical controls are: • VHF COMM: Squelch On/Off, Test • NAV/DME: Marker Sensitivity Hi/Lo, Test • ADF: BFO On/Off, Test and Off/ANT/ADF mode switch
All five (5) modules operate similarly, and have certain functions in common. These are described below along with unique functions only applicable to the specific module type.
The RCP has five (5) dual line, five and a half (5 ½) digit, Liquid Crystal Display (LCD) modules. These displays offer a high degree of readability in bright sunlight, and are backlit for enhanced viewing in low ambient light. The displays show two (2) lines of information. The top line shows the Active frequency, and the bottom line shows the Preselect frequency. The Preselect frequency is altered by turning the knobs accordingly. Once the desired frequency has been selected, it can be transferred to the Active display by pressing the Transfer button. The radio is tuned to the Active frequency.
1.2.1
Frequency or Code Selection
Rotary, optical encoders are used as frequency selectors. There are two (2) knobs, used to select the desired frequencies. The COMM and NAV modules’ MHz knob (large) controls the 1 and 10 MHz digits, and the KHz knob (small) controls the KHz digits. Only the Preselect display is affected by the frequency selector. Pressing the TFR transfers (or interchanges) the Preselect and Active frequencies. The radio is tuned to the Active frequency which is shown in the top line of the display.
The RCP has an integrally lit, plastic panel which includes all pertinent nomenclature required to identify the function of each control and annunciator. Dimming is controlled by the aircraft 5 VDC dimming buss. The nomenclature is clearly readable in both low and high ambient lighting. Rev. A
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Variable rate tuning is used on the ADF module to allow faster selection of a large frequency span with two (2) knobs. The larger diameter knob selects the left three digits (1 MHz, 100 & 10 KHz) while the smaller diameter knob selects the right two digits (1 KHz & 0.5 KHz). Only the Preselect display is affected by the frequency selector. Pressing the TFR transfers (or interchanges) the Preselect and Active frequencies. The NAV modules produce paired “2 of 5” codes per ARINC 410 for NAV and DME receiver frequency selections. The ADF module provides a Binary Code (BCD) for each digit per ARINC 410. VHF COMM frequency selection utilizes a serial, CSDB protocol. 1.2.2
Memory Store & Recall
All five (5) modules contain non-volatile memory to store the last Active and Preselect frequencies selected prior to power down. These selected frequencies are restored onto the display and sent to the radio on the next power up cycle. Each of the five modules also store and recall 10 additional frequencies, or channels, in non-volatile memory.
1U661-001 Operator’s Manual
1.2.3
1.2.4
1.2.5
Other functions MKR HI / LO The NAV modules incorporate a two (2) position toggle switch for setting the HI / LO sensitivity mode of the Marker Beacon radio. BFO Activate the Beat Frequency Oscillator circuitry in the ADF receiver by placing this toggle switch in BFO position. OFF/ANT/ADF The ADF receiver mode can be selected using this three (3) position rotary switch. In the Off position AC and DC power to the receiver and ADF module is removed SQ ON / OFF The VHF COMM modules incorporate a two (2) position toggle switch for switching the squelch circuitry in the radios On or Off. COMM FREQ - 8.33 / 25 This is a “pull-to-unlock” type toggle switch, which selects either the 25 KHz or 8.33 KHz tuning mode of the VHF COMM transceivers. The VHF COMM module displays show only two (2) active KHz digits in the “25” position and three (3) active KHz digits in the “8.33” position.
A time-out function is designed into the “Memory Mode”. If the frequency select knobs have not been turned or the MEM button has not been pressed after a delay of about ten (10) seconds, the display will default back to the Command mode.
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Audio Volume Control
All five modules include a volume control. The volume control on the VHF COMM and NAV modules incorporate a power On / Off switch which powers both the module and its associated radio.
The “Memory Mode” starts in the Memory Recall mode with the stored frequency displayed in the upper display line and a reference channel number in the lower line. In the Memory Recall mode, any of the 10 stored channels (0 through 9) can be selected by turning either knob. The smaller or larger knob will increment or decrement the channel number between “0” and “9”. In the Memory Store mode, (the memory channel number is in the upper display line, and its frequency is in the lower) the stored frequency of a selected channel can be changed using the frequency selector knobs.
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Test Functions
Five (5) test switches are located on the front panel of the RCP, one (1) for each module. The switches test the internal electronics, display, and the equipment being controlled. If the test is successful, all display segments will be illuminated for as long as the button is pressed. Indicators are also tested when the push-button is pressed.
To change memory contents, press the appropriate MEM button on the RCP. The MEM button toggles between the Command and the Memory mode. When in the Memory mode, the TFR button acts as a toggle between the Memory Store and Memory Recall modes. The frequency select knobs control the lower display line.
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Lighting Control
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2.0 VHF COMMUNICATION MODULES
The plastic panel back lighting is controlled directly by the aircraft’s five (5) VDC dimming buss. The LCD back lighting and the indicators are powered by the internal 5 VDC supply. The intensity of the LCD lighting and the indicators are controlled by the microcomputer after sampling the dimming buss. If the dimming buss voltage is less than 0.5 VDC it is assumed that the panel lighting buss is off. Under this condition, the display and indicators are set to full brightness. When the dimming buss voltage is greater than 0.5 VDC, the LCD and indicator brightness will track the plastic panel brightness. 1.2.7
Emergency Operation
In case of a RCP, VHF COMM module failure which results in the loss of transceiver tuning control, the corresponding Collins VHF-22 (C and D) COMM transceiver will revert to the international emergency frequency of 121.50(0) MHz.
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DESIGNATION
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CONTROL
FUNCTION
1.
ACTIVE Display
Active Frequency
Displays the frequency that the radio is tuned to.
2.
PRESELECT Display
Preselect Frequency
Displays the frequency being selected.
3.
MEM Button
Memory Mode
Press button to enter or exit the Memory mode.
4.
SQ ON/OFF Switch
Squelch Control
Switch On to squelch .
5.
MHz Knob
Megahertz Selector
Rotate to select frequencies in 1 MHz increments.
6.
KHz Knob
Kilohertz Selector
Rotate to select frequencies in 25 KHz (or 8.33 KHz) increments.
7.
TFR Button
Interchange
Press to swap the Preselect and Active frequencies.
8.
TEST Button
VHF COMM Test
Press to test.
9.
VOL–OFF Pot
Power and Volume Control
Rotate CW to apply power and increase audio level.
10. COMM FREQ
Frequency/Chann el Spacing
Switch between 25 KHz or 8.33 KHz frequency/channel spacing.
11. Xmit Indicator
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Green indicator, active when radio is transmitting.
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2.1 OPERATING PROCEDURE 1.
Turn VOL-OFF knob clockwise to apply power. Select the desired audio level.
2.
Press the TEST button. All of the display segments and the transmit indicator should illuminate. Release the button to exit the Test Mode.
3.
Rotate the MHz and KHz knobs to select the desired Preselect frequency.
4.
Press TFR button to interchange the Preselect and Active frequencies.
2.2 MEMORY STORE & RECALL PROCEDURES 2.2.1
d.
Select the desired frequency using the knobs.
e.
Press the TFR button again to store the new frequency in memory, and swap the top and bottom lines of the display. Press the MEM button to exit the “Memory Mode”.
Programming Memory Channels a.
Press the MEM button to enter the “Memory Mode”.
2.2.2
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Upon entering the “Memory Mode”, the display will show a frequency on the top line and a memory channel on the bottom line. Using either knob, select a channel to view or program (0 through 9). The knobs act only on the bottom display line.
c.
Once the desired memory channel has been selected, press the TFR button to interchange the channel number and the frequency. Note that the knobs act only on the bottom line of the display.
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Recalling Memory Channels a.
Press the MEM push-button to enter the “Memory Mode”.
b.
Once in the “Memory Mode”, the display will show a frequency on the top line and a channel number on the bottom line. Using either knob, select the desired memory channel to view.
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c.
d.
To tune the radio to the recalled frequency, press the TFR button to interchange the channel number and the frequency. Press the MEM button to exit the “Memory Mode”. The recalled frequency replaces the previous frequency on the Preselect line of the display.
To finish tuning the radio to the recalled frequency, press the TFR push-button. The Preselect and Active frequencies are interchanged, and the radio is tuned to the new Active frequency.
1U661-001 Operator’s Manual
Placing the COMM MODE switch in the 8.33 KHz position, forces both VHF COMM modules to tune in 8.33 KHz increments. The display will not change until either knob is turned. Once a new Preselect frequency is selected, the right most digit will become active indicating 8.33 KHz spacing. The Active frequency remains unchanged until a 8.33 KHz frequency from the Preselect line is interchanged with the Active frequency using the TFR button. Frequencies previously stored in memory are displayed in the mode in which they were originally stored. If a frequency is changed while in the “Memory Mode”, it is stored in the currently active mode. The following table correlates each displayed frequency to the corresponding radio tuning frequency.
Display (25 KHz Mode) 118.00
2.3 TEST FUNCTION The “Test Mode” is entered whenever the TEST button is pushed. The module performs a series of internal self-tests, sends a test command to the equipment being controlled, turns on every display segment, and illuminates the transmit indicator. Release the button to exit the “Test Mode”.
118.02
118.05
2.4 SQUELCH A two (2) position toggle switch is provided to select whether the squelch is On or Off. In the Off position, both background and foreground audio signals are heard.
118.07
2.5 CHANNEL SPACING 118.10
The 25 KHz / 8.33 KHz (COMM MODE) toggle switch is located in the top / center of the RCP, and is a “pull-to-unlock” type. Placing switch in the 25 KHz position, forces both VHF COMM modules to tune in 25 KHz increments. The display will not be updated until the knobs are turned. Once either knob is turned, the rightmost digit is blanked to indicate that 25 KHz spacing is being used. The Active frequency remains unchanged until a 25 KHz frequency from the Preselect line is interchanged with the Active frequency using the TFR button. Rev. A
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Display (8.33 KHz Mode) 118.000 118.005 118.010 118.015 118.025 118.030 118.035 118.040 118.050 118.055 118.060 118.065 118.075 118.080 118.085 118.090 118.100
Radio Frequency (MHz) 118.0000 118.0000 118.0083 118.0167 118.0250 118.0250 118.0333 118.0417 118.0500 118.0500 118.0583 118.0667 118.0750 118.0750 118.0833 118.0917 118.1000
Collins VHF-22 (C and D) Tuning Table
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3.0 NAVIGATION MODULES
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3.1 OPERATING PROCEDURE
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DESIGNATION
CONTROL
FUNCTION
1.
Turn the VOL-OFF potentiometer clockwise to apply power. Set the desired audio level by turning it further to increase the volume.
2.
Push the TEST button and wait for all of the display segments to turn on, then release the button.
3
Rotate the knobs as necessary to select the desired Preselect frequency.
4.
Press the TFR button to interchange the Preselect and Active frequencies. The radio is tuned to the new Active frequency.
5.
Set the Marker Beacon switch to the Hi position for high-altitude flying, and to the Lo position on approach.
1.
ACTIVE Display
Active Frequency
Displays the frequency that the radio is tuned to.
3.2 MEMORY STORE / RECALL
2.
PRESELECT Display
Preselect Frequency
Displays the frequency being selected.
3.2.1
3.
MEM Button
Memory Mode
Press button to enter and exit the memory mode.
4.
MKR HI/LO Switch
Marker Beacon
Toggle switch to set the marker beacon sensitivity.
5.
MHz Knob
Megahertz Selector
Rotate to select frequencies in 1 MHz increments.
6.
KHz Knob
Kilohertz Selector
Rotate to select frequencies in 50KHz increments.
7.
TFR Button
Interchange
Swaps the Preselect and Active frequencies.
8.
TEST Button
NAV test
Press to test.
9.
VOL-OFF Pot
Power and Volume Control
Rotate CW to apply power and increase volume.
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Programming Memory Channels a.
Press the MEM button to enter the “Memory Mode”.
b.
Upon entering the “Memory Mode”, the display will show a frequency on the top line and a memory channel on the bottom line. Using either knob, select a channel to view or program (0 through 9).
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3.2.2
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c.
Once the desired memory channel has been selected, press the TFR button to interchange the channel number and the frequency. Note that the knobs act only on the bottom line of the display.
d.
Set the desired frequency using the knobs.
e.
Press the TFR button again to store the new frequency in memory, and swap the top and bottom lines of the display. Press the MEM button to exit the “Memory Mode”. Note: The Preselect line will always change to the selected memory channel, even if the frequency is not in the bottom display line of the “Memory Mode”. This is different than the COMM Modules. Waiting for the “Memory Mode” to time-out will avoid changing the Preselect frequency.
Recalling Memory Channels a.
Press the MEM button to enter the “Memory Mode”.
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b.
Once in the “Memory Mode”, the display will show a frequency on the top line and a channel number on the bottom line. Using either knob, select the desired memory channel to view. To tune the radio to the recalled frequency, press the TFR button to interchange the channel number and the frequency.
c.
Press the MEM button to exit the “Memory Mode”. The recalled frequency replaces the previous frequency on the Preselect line of the display. Note: The Preselect line will always change to the selected memory channel, even if the frequency is not in the bottom display line of the “Memory Mode”. This is different than the COMM Modules. Waiting for the “Memory Mode” to time-out will avoid changing the Preselect frequency.
d.
Press the TFR button. The Preselect and Active frequencies are interchanged, and the radio is tuned to the new Active frequency.
3.3 TEST FUNCTION The “Test Mode” is entered whenever the TEST button is pushed. The pertinent module performs a series of internal self-tests, sends a test command to the equipment being controlled, and turns on every display segment. Release the button to exit the “Test Mode”.
3.4 MARKER BEACON SENSITIVITY Place the sensitivity switch in the Hi position for high-altitude flying (away from airports), and to the Lo position for an approach.
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5 6 7 8 CONTROL Active Frequency
Displays the frequency that the radio is tuned to.
2.
PRESELECT Display
Preselect Frequency
Displays the frequency being selected.
3.
MEM Button
Memory Mode
Press button to enter and exit the memory mode.
4.
BFO Switch
Beat Frequency Oscillator in receiver
Toggle switch to activate the Beat Freq. Oscillator.
5.
OFF/ANT/ADF
Power On/Off and antenna mode switch
Rotate to ANT or ADF to apply power & select mode
6.
1 MHz, 100 KHz & 10 Knob
Frequency Selector for left three digits
Rotate to select frequencies in 10 KHz increments.
7.
1 KHz & 0.5 KHz Knob
Frequency Selector for right two digits
Rotate to select frequencies in 0.5 KHz increments.
8.
TFR Button
Interchange
Swaps the Preselect and Active frequencies.
9.
VOL
Volume Control
Rotate CW to increase volume.
ADF test
Press to test.
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Turn the OFF/ANT/ADF mode switch clockwise to the ANT or ADF position. This will apply power to the ADF Module and the Receiver.
2.
Push the TEST button and wait for all of the display segments to turn on, then release the button.
3.
Rotate the knobs as necessary to select the desired Preselect frequency.
4.
Press the TFR button to interchange the Preselect and Active frequencies. The radio is tuned to the new Active frequency.
5.
Set the BFO switch to the desired position.
4.2.1
FUNCTION
ACTIVE Display
Rev. A
1.
4.2 MEMORY STORE / RECALL
1.
10. TEST Button
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4.1 OPERATING PROCEDURE
4.0 ADF MODULE
DESIGNATION
1U661-001 Operator’s Manual
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Rev. A
Programming Memory Channels a.
Press the MEM button to enter the “Memory Mode”.
b.
Upon entering the “Memory Mode”, the display will show a frequency on the top line and a memory channel on the bottom line. Using either knob, select a channel to view or program (0 through 9).
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c.
d.
1U661-001 Operator’s Manual
Once the desired memory channel has been selected, press the TFR button to interchange the channel number and the frequency. Note that the knobs act only on the bottom line of the display.
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b.
Once in the “Memory Mode”, the display will show a frequency on the top line and a channel number on the bottom line. Using either knob, select the desired memory channel to view. To tune the radio to the recalled frequency, press the TFR button to interchange the channel number and the frequency.
c.
Press the MEM button to exit the “Memory Mode”. The recalled frequency replaces the previous frequency on the Preselect line of the display.
d.
Press the TFR button. The Preselect and Active frequencies are interchanged, and the radio is tuned to the new Active frequency.
Set the desired frequency using the knobs.
Press the TFR button again to store the new frequency in memory, and swap the top and bottom lines of the display. Press the MEM button to exit the “Memory Mode”.
4.2.2
a.
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4.3 TEST FUNCTION
Recalling Memory Channels Press the MEM button to enter the “Memory Mode”.
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The “Test Mode” is entered whenever the TEST button is pushed. The pertinent module performs a series of internal self-tests, sends a test command to the equipment being controlled, and turns on every display segment. Release the button to exit the “Test Mode”.
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