Instruction Manual
Installation & Operation
Model FA2100 CVR
165E1846–00
Jan. 01/03
Rev. 07
Page 15
On aircraft with an existing CVR Vibration Mount such as Part Number 9300-343 or equivalent, or with
an existing Heavy Duty CVR Vibration Mount such as Part Number 93–955 or equivalent, it is not
necessary to retrofit this mounting tray with a hard-mounted tray.
Refer to Figure 4 for CVR Mount outline and dimension illustration.
3.6
Power Requirements
Unless impractical, the FA2100 CVR should be powered from a bus other than the bus used to provide
power to the Flight Data Recorder. Each bus will need to meet the supply reliability requirements
appropriate for the recorders being powered.
The FA2100 CVR operates with input voltages of either 115 Vac at 400 Hz, or 28 Vdc. The FA2100
CVRs draw a maximum of 12 watts ac or 10.5 watts dc. The electrical connector is a 57-pin DPXB
connector that is compatible with ARINC 757 (Part Number is 063E1072–00, Cannon Part Number
DPXB–36571–59). This connector mates with the connector on the aircraft wiring harness.
3.7
Wiring Connections
The typical electrical interconnect wiring between the recorder and the aircraft is specified in ARINC
Characteristic 757. Connections to the FA2100 CVR J1 connector depend on the installation
configuration. Refer to Appendix A for appropriate Interwiring Diagram.
3.8
Audio System Interface
The FA2100 CVR is used in an ARINC 757 configuration, with interface to the aircraft provided through
a 57-pin DPXB rear panel connector.
The range of acceptable audio input levels for the Model FA2100 CVR is from
50 mVrms to 3 Vrms. Nominal audio level input is 1 Vrms.
The Model FA2100 CVR provides for four audio inputs which are connected as follows:
Channel 1: Cockpit Spare Audio Input (3rd Crew Member, Public Address System)
Channel 2: Co-Pilot’s Audio, Boom, Mask, and Hand-Held Microphone Input
Channel 3: Pilot’s Audio, Boom, Mask and Hand-Held Microphone Input
Channel 4: Cockpit Area Microphone (CAM) Input
Older aircraft audio systems may require rework to ensure recording of ATC (Air Traffic Control),
Intercom, Mask Microphone, and Sidetone audio, independent of mode selection on the audio control
panel. In some cases, selection of the loudspeaker function disables side tone output; therefore,
transmissions from ATC may not be recorded. Such conditions must be remedied to assure continuous
reception of audio from the communications radios.
Old Systems: Rework the audio control panel or system to provide a CVR output or install an external
summing amplifier. Summing amplifiers can be obtained from Avtec, Baker Electronics, Racal, and
others. No changes to the CVR are required.
New Systems: Some later-generation audio control panels have a CVR signal output already provided.
A summing amplifier may be required to provide recording of the boom microphone. The Installer is
responsible for determining the means of interfacing to comply with the regulations.
