BRUEL & KJAER 1022 Instructions And Applications page 7

AUTOMATIC SCANNING:
FREQUENCY INCREMENT:
OSCILLATOR STOP:
Connects the variable capacitor of the
B. F .0. to a worm drive which can 'be
connected to and driven by an external
motor.
Allows exact variation of the output fre-
quency within
-50
to
+50 Hz
of that
indicated by the main frequency scale.
Pushbutton to interrupt the oscillator.
It is fitted for reverberation measure-
ments and is noiseless.
MODULATION FREQUENCY: Selects frequency of modulation. Choi-
ce of 1-1.6-2.5-4-6.3-10-16-25 Hz
or external modulation.
REMOTE CONTROL:
FREQUENCY DEVIATION:
COMPRESSOR SPEED:
FREQUENCY SCALE
ALIGNMENT:
1000Hz
REF.SIGNAL:
OUTPUT LEVEL:
Six-pin socket for connection of various
forms of remote control and external
f requency modulation. For connections
see Operation chapter paragraph G.
Modulates the frequency of the fixed
oscillator and hence the output frequen-
cy by 0 to
±
250 Hz.
Selects the time constant in the regula-
tion circuit. Gives regulation speeds of
30-100-300-1000 dB/sec.
Fine and Coarse potentiometers to ad-
just the output frequency to coincide
with that indicated on the main scale.
When this button is depressed and the
main frequency scale is set to "1 000 Hz,
Ref.Signal" an output reference signal is
produced.
Potentiometer giving continuous adjust-
ment of output signal when the com-
pressor circuit is not in operation.
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