L3 FA2100 CVR Component Maintenance Manual With Illustrated Parts List page 180

Figure 131. Audio Reference Level Utility, Play Sound
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AVIATION RECORDERS
COMPONENT MAINTENANCE MANUAL
FA2100CVR
Adjust the Audio Reference Level volume slider so that the meter reads
2.45 Volts RMS or as close as possible to this voltage.
From the Audio Reference Level menu select Sound => Record Sound
to record the input sound.
From the Audio Reference Level menu select Sound => Stop Record to
stop recording.
From the Audio Reference Level menu select Sound => Stop Play to
stop audio output from the sound card.
From the Audio Reference Level menu select Store Results => Input
Results to calculate and display the REFERENCE value or Correction
Factor (CF).
Figure 132. Sound Card Input Results
Click OK to continue with the update or Cancel to stop the update. Fol-
lowing an OK click a pop−up window will appear displaying the new REF-
ERENCE, and current VOICE VOLUME and CAM VOLUME values.
23–70–04
Testing & Fault Isolation
Rev. 15 Page 131
Apr. 14/16