COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 165
Apr. 14/16
Testing & Fault Isolation
23–70–04
Use or disclosure of information on this sheet is subject
to the restrictions on the cover page of this document.
and 3500 Hz.
Frequencies for HQCAM and SQCAM only is 3150 Hz.
Frequencies for HQCAM only are:
4148 and 6000 Hz.
Example Return to Service report message(s):
11:24:20 PASSED SN+D 150 Hz 1.0 ref (Expected HQ > 24.0 dB SQ > 20.0 dB)
Results = HQ1 34.6 /HQ2 34.4 /HQ3 34.8 /HQC 36.4 /SQV1 30.9 /SQV2 31.0
/SQV3 30.6 /SQC 31.4 dB
11:26:44 PASSED SN+D 1000 Hz 1.0 ref (Expected HQ > 24.0 dB SQ > 20.0 dB)
Results = HQ1 27.0 /HQ2 26.9 /HQ3 26.7 /HQC 32.4 /SQV1 23.3 /SQV2 23.0
/SQV3 23.3 /SQC 23.3 dB
11:29:09 PASSED SN+D 3500 Hz 1.0 ref (Expected HQ > 24.0 dB SQ > 20.0 dB)
Results = HQ1 30.6 /HQ2 30.2 /HQ3 30.4 /HQC 30.3 /SQV1 25.0 /SQV2 25.2
/SQV3 24.9 /SQC 25.5 dB
11:30:35 PASSED SN+D 5000 Hz 1.0 ref (Expected HQC > 24.0 dB) Results = HQC
30.6 dB
11:31:07 PASSED SN+D 6000 Hz 1.0 ref (Expected HQC > 24.0 dB) Results = HQC
27.7 dB
NOTE:
Running the Signal to Noise and Distortion test in the Selectable
Test mode will perform additional tests at 200, 250, 315, 400,
500, 630, 800, 1250, 1600, 2000, 3150 and 4000 Hz.
(10) Crosstalk Audio
Record simulated 1000 Hz data for each channel 1,2,3 & 4 and calculate difference
between driven and non
−
driven channels. Verify difference is less than
−
40 dB.
Example report message(s):
08:41:34 PASSED Crosstalk (Audio) 1000 Hz 1.0 ref (Expected Driven
−
Non
−
Driven <
−
40 dB) Results = HQ1 11.2 /HQ2
−
101.0 /HQ3
−
109.9 /HQC
−
128.1
/SQV 11.4 /SQC
−
84.4 dBV
08:41:49 PASSED Crosstalk (Audio) 1000 Hz 1.0 ref (Expected Driven
−
Non
−
Driven <
−
40 dB) Results = HQ1
−
101.3 /HQ2 11.2 /HQ3
−
115.3 /HQC
−
107.5
/SQV 11.4 /SQC
−
72.3 dBV
08:42:04 PASSED Crosstalk (Audio) 1000 Hz 1.0 ref (Expected Driven
−
Non
−
Driven <
−
40 dB) Results = HQ1
−
304.8 /HQ2
−
127.4 /HQ3 11.1 /HQC
−
104.4
/SQV 11.4 /SQC
−
72.0 dBV
The document reference is online, please check the correspondence between the online documentation and the printed version.