
Mar 2017
Page 17
DATA ACQUISITION FLIGHT RECORDER Type D51615-202-XXX or D51615-
202-XXX-090 with CCU Type D51616-XXXX and CAM Type D51623-XXXX
Installation and Operating Manual with Illustrated Parts
List
Commercial in Confidence
PIM434-I
© Penny & Giles Aerospace Ltd. No part of this work may be reproduced or distributed by any means
without prior permission in writing from the copyright owner.
Equipment Outputs
Preamplifier Power Supply
A regulated DC output is provided as defined by ARINC 757
Supplement 2 to supply power to a Preamplifier/Area
Microphone. The voltage is +18.5VDC ±1VDC at a maximum
current of 100mA.
Potentiometer Excitation
The DAFR provides power for four external potentiometers.
Status Outputs
NOTE:
FDR and CVR Fault Output polarity is configurable.
(i)
FDR FAULT:
Open circuit until the data recording system is operating
satisfactorily at which time it is connected to CHASSIS
GROUND. When open circuit the FDR Data out signals are
clamped to 0v. Maximum current = 100mA.
(ii)
CVR FAULT:
Open circuit until the audio recording system is operating
satisfactorily at which time it is connected to CHASSIS
GROUND. When open circuit the Audio Monitor output signal is
clamped to 0v. Maximum current = 100mA.
Potentiometer Outputs
The DAFR provides four +3.3V DC supplies, one per supported
potentiometer input.
Audio Monitor Output
This output is the sum of all audio channels. It is unbalanced.
Signal levels are defined in 1.3.1. Headphones of 600
Ω
impedance or greater may be driven directly.
Maximum drive level:
2.45V
RMS
into 600
Ω
Frequency range:
150Hz to 6kHz
The Audio monitor output is clamped to 0V when a CVR fault
indication is given.