(2) Output Discretes These Output discretes are the same for each VHF circuit.
 -------------------------------------------------------------------------------NAME ELECTRICAL LEVEL TO SIGNAL STATUS -------------------------------------------------------------------------------KEY EVENT GND/O.C. SDAC GND=EMISSION
 (3) Output Analog Signals These Output Analog Signals are the same for each VHF circuit.
 -------------------------------------------------------------------------------NAME ELECTRICAL LEVEL TO SIGNAL STATUS -------------------------------------------------------------------------------AUDIO SIDETONE OUTPUT MODULATION AMU SELCAL OUTPUT MODULATION AMU
 **ON A/C 151-199,
 5. Interface
_________
 A. Output Interface
 (1) Digital Outputs The connections with the CFDIU is a type-1 system. This type of system has an ARINC 429 input from the CFDIU and an ARINC 429 output. This system is thus capable of two-way communication with the CFDIU (Ref.31-32). The radio-communication equipment receives the frequency data through words from the RMPs. These words have a structure and a refresh rate defined in ARINC 429 characteristics specification. On the output bus, each VHF transceiver transmits the labels 354, 356, 377, and only VHF3 transceiver (if installed) transmits labels 270 and 172.
 This table contains all the output parameters in the digital form. They are sorted as per the numerical order of their output label.
R 1EFF : 106-149, 151-199, 201-299, 301-399, 1 23-12-00Page 19 1401-499, 1Aug 01/05 1 1 1CES 1

R -------------------------------------------------------------------------------R | PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) |
R -------------------------------------------------------------------------------R |EQ.SYS.LAB.SDI|PARAMETER | WORD RANGE |UNIT|SIG |BITS|XMSN|CODE|ALPHA|SOURCE |
R | |DEFINITION| OPER RANGE | |BIT | |INTV| |CODE |ORIGIN |
R | |(*=REMARK)| RESOLUTION | | | | | | |BUS No.|
R | |(X=NOTE) | ACCURACY | | | | | | |ATA REF|
R | | | | | | | | | |CONV |
R -------------------------------------------------------------------------------R | 354 |LRU | | | | | | | | |
R | |IDENT | | | | | 250|ISO5| | |
R | | | | | | | | | | |
R | 377 |EQUIP | | | | | | | | |
R | |IDENT | | | | |1000| BCD| | |
R | | | | | | | | | | |
R | 356 |FAULT | | | | | | | | |
R | |MESSAGE | | | | | 250|ISO5| | |
R | | | | | | | | | | |
R | 270 |STATUS | | | | |1000|BOO-| | |
R | | | | | | | |LEAN| | |
R | | | | | | | |WORD| | |
R | 172 |SAL MODE | | | | |1000| BNR| | |
R -------------------------------------------------------------------------------
R The equipment code of the VHF tranceiver is 016.
R An ARINC 429 HS bus between VHF3 (VDR3) (if installed) and ATSU is
R used to transmit user's data and control data.

R (2) Output Discretes
R These Output discretes are the same for each VHF circuit.

R -------------------------------------------------------------------------------R NAME ELECTRICAL LEVEL TO SIGNAL STATUS
R -------------------------------------------------------------------------------R KEY EVENT GND/O.C. SDAC GND=EMISSION

R (3) Output Analog Signals
R These Output Analog Signals are the same for each VHF circuit.

R -------------------------------------------------------------------------------R NAME ELECTRICAL LEVEL TO SIGNAL STATUS
R -------------------------------------------------------------------------------R AUDIO SIDETONE OUTPUT MODULATION AMU
R SELCAL OUTPUT MODULATION AMU

R 1EFF : 151-199, 1 23-12-00Page 20 1 1 May 01/05 1 1 1CES 1 **ON A/C ALL

 6. Component Description
_____________________
 A. VHF Transceiver
 (1) Description The VHF transceiver conforms to ARINC 600 specifications. The case size is 3MCU.
 (a) VHF transceiver
 **ON A/C 001-049, 101-105,
 (Ref. Fig. 006)

R **ON A/C 051-099, 106-149, 201-299, 301-399, 401-499,
 (Ref. Fig. 006A)
 **ON A/C 151-199,
 (Ref. Fig. 006B)
 **ON A/C 001-049, 101-105,
 1 VHF transceiver face
_ The face features : (Ref. Fig. 006)
 -
two jacks (PHONE and MIC)

 -
two pushbutton switches

 -an LCD
 -a PMCDIA memory card entry slot
 -
an RS-232 connector

 -
an identification plate.

 1EFF : ALL 1 23-12-00Page 21 1 1 Aug 01/05 1 1 1CES 1

 VHF Tranceiver Figure 006 
R 1EFF : 1 1 1CES  001-049, 101-105,  1 111 23-12-00 Page 22 May 01/05
　
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