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TRLUEEUA
TED
ENG
3-2-2.
Adjustment of Protection Circuit Operating Voltage
[Jigs andtools]
Audio oscillator
80 dummy resistor (10 W or more)
DC voltmeter
[Setting]
1) Set the switches on the connector panel as follows.
SPEAKER SELECT switch: INT
INPUT IMP selector switch: 60082
INPUT LEVEL selector switch: 0dB
2) Set the output of the audio oscillator at 1 kHz,
0 dBm.
3-2-2-1. R-CH adjustment
eConnect
the 82 dummy
resistor
Operating voltage across dummy
resistor:
SP LEVEL control
(R-CH)
to connector CN107.
8.5V
e Connect the output of the audio
oscillator to the INPUT
L XLR
connector.
Operating voltage across dummy resistor:
ORV103/AA-25
8.5V+0.5V
Turn RV103 counterclockwise
so that the protection circuit
is activated.
3-2-2-2.
L-CH adjustment
@ Connect the 82 dummy
resistor
Operating voltage across dummy
resistor:
to connector CN114.
SP LEVEL control (L-CH)
8.5 V
@ Connect the output of the audio
oscillator to the INPUT R XLR
connector.
Operating voltage across dummy resistor:
@RV106/AA-25
8.5V+0.5V
Turn RV106 counterclockwise
so that the protection circuit
is activated,
3-4(E)
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