L3 Communications FA2100CVR, Installation/Operation Instruction Manual, Page: 17 / 20

Model FA2100CVR
Instruction Manual
Installation & Operation
Page 5
Rev. 16
165E1846-00
Part Number 2100–1020–( ) pre MOD − DOT #7 records a fifth internal audio stream 30 mins of HQ au-
dio along with 120 mins of standard quality (SQ) audio. This fifth internal audio stream is a standard
quality recording of the combination of the Pilot, Co-Pilot, and Public Address or Third Crew Member
audio inputs. Part Number 2100
− 1020 − ( ) pre MOD − DOT #7 also records a sixth audio stream, a
standard quality recording of the Cockpit Area Microphone (CAM) audio input, for a minimum of 120
minutes. (Table 7 illustrates the recording specifications for the cockpit audio input and combined chan-
nels.) The audio inputs are conditioned, amplified, and equalized as necessary. The resulting signals are
converted to digital pulse code modulation (PCM) data. Part Numbers 2100
− 1025/26/27 − ( ) and
2100 − 1020 − ( ) MOD − DOT #7 only records a minimum of 120 minutes of high quality recording on all
four audio channels. Onboard Maintenance System (OMS) and Data Link are applicable to the
2100
− 1025 − ( ) and 2100 − 1026/27 − 02 configurations only. The Part Numbers 2100 − 1025 − 22/24 and
2100 − 1026/27 − 02 have the Onboard Maintenance System (OMS) and Data Link that includes RIPS
monitoring status.
The FA2100 FA2100CVR can record Greenwich Mean Time (GMT) Time via the ARINC 429 GMT in-
put and can record rotor speed data via the Rotor Speed input.
In ARINC 757 installations, the CVR Fault Line provides continuous status of FA2100CVR operation.
It may be connected to an annunciator or to an aircraft central maintenance computer.
At start − up, the FA2100CVR initiates a Built-in-Test (BIT) and then continuously monitors itself for
fault conditions.
Previously recorded information cannot be read from the Model FA2100CVR while it is installed in the
aircraft. (Refer to paragraph 6.0 for additional information).
1.5 Onboard Maintenance System Interface
The 2100 − 1025 − ( ), 2100 − 1026/27 − 02 CVR includes an ARINC 429, high speed, Onboard Maintenance
System (OMS) output interface (Pins 50/51) and an ARINC 429, low speed, OMS input interface (Pins
39/40). The 2100
− 1025/26/27 − 02 CVR supports a comprehensive OMS input/output protocol. Contact
L − 3AR for further information.
The 2100 − 1025 − 22/24 supports the OMS interface as defined below. The OMS output interface is used
for transmission of CVR status information to a Centralized Maintenance Computer (CMC). The OMS
outputs are listed in Table 2.
Table 2. CVR OMS Output Words
Label Parameter Format Rate
350 CVR Status Word BNR 1 s
354 LRU identification (P/N and S/N) ISO 5 0.5 s
377 ARINC 429 equipment identification BCD 1 s
The Label 350 status word can be used to supplement or replace the discrete status outputs that are other-
wise available from the CVR (e.g. CVR Fault discrete, DataLink Fault Discrete, and Test Good Indicat-
or). The CVR software provides the Label 350 status output word, per ARINC 757, once per second.
As an additional capability, this CVR also monitors the status of an attached Recorder Independent
Power Supply, if present, and includes that status with the OMS output reporting. The RIPS status is
monitored using the CVR input pins listed in Table 3: