COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Rev. 04 Page 125
Feb. 27/14
Testing & Fault Isolation
23–70
−
40
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the restrictions on the cover page of this document.
(12) FSK Time
This test cycles power to recorder to reset for FSK input then records simulated
16000 sps FSK data and then simulated GMT 429 data (label 150) first with channel
1 output and again with channel 3 output. It verifies 9 good FSK data patterns and a
switch to 9 good GMT 429 data patterns for each channel 1 and channel 3.
Example report message(s):
14:50:07 PASSED FSK Time HQ1 (Playback)(Expected 9 patterns) Results = 9
good patterns
14:50:07 PASSED FSK Time HQ1 (GMT Switch) (Expected 9 patterns) Results
= 9 good patterns
14:50:53 PASSED FSK Time HQ3 (Playback)(Expected 9 patterns) Results = 9
good patterns
14:50:53 PASSED FSK Time HQ3 (GMT Switch) (Expected 9 patterns) Results
= 9 good patterns
(13) Audio Out Monitor
Record simulated 1000 Hz data for each channel 1,2,3 and 4 and verify amplitudes
by part number:
Example report message(s):
08:26:43 PASSED Audio Out Monitor 1000 Hz (Expected 2.45 +/
−
20 percent
VRMS) Results = HQ1 2.319 /HQ2 2.338 /HQ3 2.317 /HQC 2.355 VRMS
(14) Signal To No Signal
Record simulated 1000 Hz data for each channel 1,2,3 and 4 and store results; then
record no data for channels 1,2,3 and 4 and compare differences between signal
data results and no signal data results. Verify difference is less than
−
48 dB.
Example report message(s):
08:47:12 PASSED Sig To No Sig 0 Hz 1.0 ref (Expected HQ <
−
48 dB SQ <
−
40 dB) Results = HQ1
−
304.9 /HQ2
−
122.6 /HQ3
−
108.4 /HQC
−
115.4 /SQV1
−
82.7 /SQV2
−
82.2 /SQV3
−
80.7 /SQC
−
85.0 dB
The document reference is online, please check the correspondence between the online documentation and the printed version.
