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7.3 COMPELLOR Peak Limit Test
7.3.1 Initial Set-up
-
1.
Set PROCESS BALANCE to full CCW position ( leveling mode).
2.
Set INPUT and OUTPUT to full CCW positions.
3.
On Model 300, verify STEREO ENHANCE is "OFF."
4.
Leave all other controls at their present positions.
5.
Feed inputs through the special test fixture, as shown in Fig. 7-2.
6.
Set oscillator to 400 Hz and + 10 dBm level.
7.
Verify I/O is normalized at +4 dBm.
8.
Set IN/OUT switch to OUT.
9.
On Model 303, verify AURAL EXCITER is OUT.
7.3.2 Test Procedure for Model 300
Step
Operation
Indications
1.
Turn Right INPUT to full
CCW position.
2.
Press the "+ 10" button
on the test fixture.
3.
Release the "+ 10" button
and let gain reduction
recover. When gain is
recovered, press the "+ 14"
button on the fixture.
4.
Turn the Left INPUT to full
CCW position, and turn the
Right INPUT to 12 o'clock
position.
5.
Repeat steps 2 & 3 for the
Right channel.
The LEDs indicate gainreduction,
but peak LED will not flash.
The LEDs indicate gain reduction
and the peak LED will flash
once or twice briefly.
7.3.3 Test Procedure for Model 301 and 303
Step
Operation
1.
Press the "+ 10" button
on the test fixture.
2.
Release the "+ 10" button
and let gain reduction
recover. When gain is
recovered, press the "+ 14"
button on the fixture.
Indications
The LEDs indicate gain reduction,
but peak LED will not flash.
The LEDs indicate
and the peak LED
or twice briefly.
gain reduction
will flash once
7-4 Test & Troubleshooting Procedures
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