L3 FA5000 Component Maintenance Manual With Illustrated Parts List page 63

33 FDR DATA INPUT ARINC
717 LOW
34 FDR DATA OUTPUT ARINC
717 LOW
35 ATC DIGITAL INPUT LOW
36 ATC DIGITAL INPUT HIGH
37 AREA MICROPHONE 18V
POWER
38 AREA MICROPHONE
SIGNAL LOW
39 AREA MICROPHONE
SIGNAL HIGH
40 ARINC 429 INPUT HIGH
41 FDR DATA INPUT ARINC
717 HIGH
42 FDR DATA OUTPUT ARINC
717 HIGH
43 +28VDC RETURN
SECONDARY
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AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
Model FA5000
IN ARINC 717 differential serial flight data input sig­
nal, Line B, received from an aircraft data acquisi­
tion unit. Format is defined in ARINC Characterist­
ics 573, 717, and 747. Data rate of 64 wps, 128
wps, 256 wps, or 512 wps is determined by FDR
DATA RATE A and FDR DATA RATE B. RS­422
differential levels with input impedance greater
than 100 kohms.
OUT ARINC 717 differential serial flight data output sig­
nal, Line B. Data output is the FDAU input data
buffered and returned to the FDAU. Format is
defined in ARINC Characteristics 573, 717, and
747. The differential output is RS­422, slew rate
controlled, and with impedance of 85 ohms.
IN Line B input of a standard ARINC 429 compliant
differential pair that provides Controller Pilot Data
Link Communication (CPDLC) using the Williams­
burg V3 file data transfer protocol.
IN Line A input of a standard ARINC 429 compliant
differential pair that provides Controller Pilot Data
Link Communication (CPDLC) using the Williams­
burg V3 file data transfer protocol.
OUT +18 ±2 VDC output for Area Microphone bias.
Maximum operating current is 25 milliamps. Short
circuit limited at approximately 30 milliamps.
IN Area Microphone signal return which is connected
by 0 Ohm resistors to CAM signal shield ground,
CAM power shield ground, and CAM power return.
Return is referenced to signal ground.
IN Area Microphone audio signal. Single ended input.
IN Line A input of a standard ARINC 429 compliant
differential pair used for receiving GMT / UTC
from a chronometer. The label of the clock is 125
for BCD or 150 for binary.
IN ARINC 717 differential serial flight data input sig­
nal, Line A, received from an aircraft data acquisi­
tion unit. Format is defined in ARINC Characterist­
ics 573, 717, and 747. Data rate of 64 wps, 128
wps, 256 wps, or 512 wps is determined by FDR
DATA RATE A and FDR DATA RATE B. RS­422
differential levels with input impedance greater
than 100 kohms.
OUT ARINC 717 differential serial flight data output sig­
nal, Line A. Data output is the FDAU input data
buffered and returned to the FDAU. Format is
defined in ARINC Characteristics 573, 717, and
747. The differential output is RS­422, slew rate
controlled, and with impedance of 85 ohms.
OUT Ground return for +28VDC power supply second­
ary input per TNX131AF329E10, Section 3.4.2.5
(FAR 29.1459 (a) (6))
23–70−40
Description and Operation
Initital Issue Page 21
Sep. 30/11