R 1EFF : 051-099, 106-149, 201-299, 301-399, 1 34-55-00Page 35 1401-499, 1Aug 01/05 1 1 1CES 1 The marker beacon receiver module also contains the functional test generator circuits. These circuits generate the 75 MHz test signal for the marker beacon receiver and VOR test signal for the VOR receiver.

 (c)
 Instrumentation The instrumentation module contains two processors. The signal processor, takes the VOR detector signal and separates the two 30 Hz signals (variable and reference). From these two signals, the signal processor computes the station bearing. The second processor on the module, the system processor, is used to communicate the bearing information to the aircraft. The system processor handles the signal interface with the aircraft.

 (d)
 LRU monitoring The maintenance processor, monitors the health of the VOR and marker beacon receivers. The maintenance processor provides all the BITE functions for the LRU. BITE information is transferred to the system processor for communications to the aircraft. Maintenance functions include:

 1_ Receive data from the ARINC maintenance bus and store the
 time, data, aircraft IDENT, aircraft configuration and process
 the maintenance control word.
 2_ Process data received from the system processor for storage in
 the Non-Volatile fault Memory (NVM).
 3_ Monitor discrete inputs.
 4_ Determine the validity of the maintenance input control word.
 5_ Format the fault summary word and transfer it to the system
 processor.
 6_ Transfer all OMS interactive mode data and normal mode data
 words to the system processor.
 7_ Provide maintenance menus in the aircraft.
 8_ Provide extended interactive mode support for troubleshooting
 when the LRU is in the maintenance mode. 

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R **ON A/C 001-049, 101-105, 151-199,

 (4) Digital outputs This table contains all the output parameters in the digital form. They are sorted as per the numerical order of their output label. The following table gives:
 -EQ.SYS.LAB.SDI: (SDAC,FWC,DMC...) output label for which the parameter is available
 -PARAMETER DEFINITION: parameter name
 -WORD RANGE OPER RANGE RESOLUTION ACCURACY: measurement range. Maximum value transmitted. When the digital value changes, the change step is equal to the accuracy
 -UNIT: unit in which the digital value is transmitted
 -SIG BIT: indicates whether a sign bit is available
 -BITS: number of bits used by the parameter in the label
 -XMSN/INTV: output transmission interval. The refresh rate is given in milliseconds
 -CODE :
 BNR: binary data word
 BCD: binary coded decimal data word
 ISO: data word coded in ISO5 code
 DIS: discrete data word
 HEX: hexadecimal coded
 HYB: mixed code

 -ALPHA CODE: indicates the parameter mnemonic code
 -SOURCE ORIGIN: parameter source computer or system.
 -------------------------------------------------------------------------------| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) | -------------------------------------------------------------------------------|EQ.SYS.LAB.SDI|PARAMETER | WORD RANGE |UNIT|SIG |BITS|XMSN|CODE|ALPHA|SOURCE | | |DEFINITION| OPER RANGE | |BIT | |INTV| |CODE |ORIGIN | | |(*=REMARK)| RESOLUTION | | | | | | |BUS No.| | |(X=NOTE) | ACCURACY | | | | | | |ATA REF| | | | | | | | | | |CONV | -------------------------------------------------------------------------------| .034. |VOR 1 FREQ| 108/117.95 |MHZ | | 4 |2560|BCD | | | | | | 0.01 | | | | | | | | | |VOR 2 FREQ| | | | | | | | | |--------------|----------|------------|----|----|----|----|----|-----|-------| | .100. |SEL | 180 |DEG | | 10 | |BNR | | | | |COURSE 1 | 0.0439 | | | | | | | | | | | | | | | | | | | |--------------|----------|------------|----|----|----|----|----|-----|-------| | .222. |OMNI | 180 |DEG | | 13 | |HYB | | | | |BEARING | 0.0439 | | | | | | | |
R 1EFF : 001-049, 101-105, 151-199, 1 34-55-00Page 37 1 1 May 01/05 1 1 1CES 1 -------------------------------------------------------------------------------| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) | -------------------------------------------------------------------------------|EQ.SYS.LAB.SDI|PARAMETER | WORD RANGE |UNIT|SIG |BITS|XMSN|CODE|ALPHA|SOURCE | | |DEFINITION| OPER RANGE | |BIT | |INTV| |CODE |ORIGIN | | |(*=REMARK)| RESOLUTION | | | | | | |BUS No.| | |(X=NOTE) | ACCURACY | | | | | | |ATA REF| | | | | | | | | | |CONV | -------------------------------------------------------------------------------| | | | | | | | | | | |--------------|----------|------------|----|----|----|----|----|-----|-------| | .242. |VOR 1 | | | | | |HYB | | | | |IDENT | | | | | | | | | | |WORD 1 | | | | | | | | | | | | | | | | | | | | | |VOR 2 | | | | | | | | | | |IDENT | | | | | | | | | | |WORD 1 | | | | | | | | | |--------------|----------|------------|----|----|----|----|----|-----|-------| | .244. |VOR 1 | | | | | |HYB | | | | |IDENT | | | | | | | | | | |WORD 2 | | | | | | | | | | | | | | | | | | | | | |VOR 2 | | | | | | | | | | |IDENT | | | | | | | | | | |WORD 2 | | | | | | | | | -------------------------------------------------------------------------------
　
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