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OVERLOAD indicator for the input
amplifier
GAIN
CONTROL
for
continuous
control of gain of input amplifier
.
Range min
.
10 dB
UNCAL.
Lamp
indicating
if
the
GAIN CONTROL is in uncalibrated
position
SENS
.
Adjustment for sensitivity of
DIRECT INPUT
DIRECT
INPUT.
Standard
input
socket (B & K) for input of analyzer
ATIENUATOR for the input ampli-
fier
.
90 dB range in 1 0 dB steps
SENS
.
Adjustment of sensitivity of
PREAMP. INPUT
PREAMP
.
INPUT
.
Standard
B & K
preamplifier input supplying neces-
sary power for a range of B
&
K
preamplifiers
MODULATOR BALANCE
.
Knobs for
adjusting the first mixer stage to cor-
rect balance
INPUT
selector
for
DIRECT
or
PREAMP
.
input CALIBRATION selec-
tor for reference voltage 50 mV, in-
sert voltage calibration and cal. off.
FREQUENCY INCREMENT
.
Fine ad-
justment of frequency, range ap-
prox
.
2% of main scale
FREQUENCY
ADJUSTMENT
.
Fine
frequency
adjustment,
screwdriver
operated
SWEEP
CONTROL.
Switch
for
sweep control mode
Main frequency scale with linear
and logarithmic graduation
COMPRESSOR SPEED
.
Switch for
selection
of
compressor
speed.
Range 3 to 1 000 dB
/
s
COMPRESSOR INPUT
.
Compression
signal input
COMPRESSOR
VOLTAGE
.
Poten-
tiometer for regulation of the input
. . . m
itage to the compressor input
FREQUENCY SCALE Switch for fre-
quency range and mode
6
BFO REF. SIGNAL. Push button giv-
ing a 100, 1000 or 10000 Hz sig-
nal depending on chosen frequency
range at the BFO output
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