Adjustment Of The A.f. Spectrometer Type 2112 - BRUEL & KJAER 4212 Instructions And Applications

Terminal, Knob, Switch Position
COMPRESSOR INPUT
Connected to bushing marked
"Recorder" on 2603
COMPRESSOR VOLTAGE
Approximately "5"
Connected to loudspeaker
LOAD
terminals on 4212 by means
of special cable
IMPEDANCE SWITCH "6£2"
r
ATTENUATOR Any pos.
ATTENUATOR OUTPUT Not used
FREQUENCY DIAL 1ooo Hz (c/s)
B. Adjustment of the A.F. Spectrometer Type 2112.
1. Adjust the "Sensitivity Condenser Microphone" according to the
sensitivity of the Microphone in the artificial ear as described under
"Automatic Recording of Sound Spectrograms" in the Instruction
Manual for 2112.
2. The setting of the controls should be made according to the
following table.
Terminal, Knob, Switch
I
Position
Connected to the multicore
CONDENSER MICROPHONE
cable from the "Artificial Ear"
on 4212
INPUT POTENTIOMETER
Any pos.
INPUT SWITCH "Condenser Microphone"
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