Mar 2017 Page 102
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.
1 DESCRIPTION, OPERATION AND SPECIFICATION
1.1 DESCRIPTION
The Remote Microphone Type D51623-XXXX or Type D51702-
XX provides the conversion between sound pressure waves
and analogue voltage signals. The active element of the
microphone is housed in anti vibration rubber which itself is
housed in a two part epoxy body. Two bushes are provided
on the bottom surface to aide mounting.
1.2 OPERATION
The Remote Microphone can be mounted in a suitable location
in the cockpit as the main audio source.
1.3 SPECIFICATION
1.3.1 Functional Characteristics - Performance
Frequency Response: 150Hz to 10kHz (10dB range) at SPL
between 60dB and 94dB over 20 µPa.
Harmonic Distortion
(over 150Hz to
8kHz):
Less than 5% for SPL up to 90dB over
20 µPa.
Harmonic Distortion
(at 1kHz):
Less than 10% for SPL at 120dB over
20 µPa.
1.3.2 Physical and Other Characteristics
The Penny & Giles Aerospace Ltd. Area Microphones are
identified by the convention shown in Figure 21 or Figure 22:
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