Adjustment Of The Microphone Amplifier Type 2603 - BRUEL & KJAER 4212 Instructions And Applications

D. Adjustment of the Microphone Amplifier Type 2603.
1. Adjust the SENSITIVITY CONDENSER MICROPHONE according
to the sensitivity of the regulating Microphone, as described under
"Operation" in the Instruction Manual 2603 .
2. The setting of the controls should be made according to the follow-
ing table.
Terminal, Knob, Switch
I
Position
CONDENSER MICROPHONE
Connected to the multicore cable
from the "Regulating Micro-
phone".
INPUT POTENTIOMETER Any pos.
INPUT SWITCH
"Condenser Microphone"
AMPLIFIER INPUT Not connected
FILTER INPUT
Not connected
FILTER OUTPUT Not connected
RANGE MULTIPLIER "0 dB (x 1)"
Connected to the COMPRESSOR
RECORDER
INPUT of 1022
METER SWITCH
"Standard RMS"
POWER
"On"
METER RANGE "60 dB, 10 mV"
WEIGHTING NETWORK "20-20ooo Curve C"
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