Mar 2017 Page 18
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.
Manufacturer’s Test Interface
General
The Manufacturer’s Test Interface (MTI) is a serial interface
operating on an Ethernet 10Base-T/100Base-Tx four wire link
to IEEE Std 802.3u-1995.
Electrical Interface
The electrical interface consists of two differential pairs, one for
transmitted and one for received data.
Clock Rate
The Ethernet interface will operate at either 10 MHz or at a
maximum MTI clock rate of 100 MHz. The link will auto
negotiate to whichever rate is determined at equipment start
up.
Information Protocol
The MTI implements TCP/IP.
1.2 OPERATION
1.2.1 Operational Modes
The following are the operational modes for each of the
separate recording subsystems. The voice recording section
can operate completely independently of the data recording
section, i.e. data can be replayed whilst audio is recorded:
Idle (Data or Audio)
The idle mode is a non-recording mode with no transfer of
information to or from the protected memory array. The
relevant FAULT status output(s) are asserted. MTI operation is
supported during the idle mode.
RECORD ON - Jumper not fitted
Record (FDR Data Only)
The Record (FDR Data Only) mode is the normal operational
mode for the Flight Data Recorder subsystem.
The state of the control inputs to initiate this mode is as
follows:
STOP CVR RECORDING - (Don’t care)
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