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3.
OPERATING INSTRUCTIONS
3.1.
CONTROLS AND SOCKETS (FIG. 2)
Legend
POWER
oON
• OFF
WAVEFORM
\..,
~
ru
FREQUENCY Hz
x1 x100 x 10k
Position
251
252/5 to
252/7
252/1 to
252/3
Function
mains switch:
white dot for ON position
push buttons for the required waveform:
sinewave, triangular or square wave.
pushbuttons for selecting the frequency range
0.1-200 Hz, 10Hz-20kHz, 1 kHz-2 MHz
650
dial for continuous coarse frequency adjustment
.1 ..... 200
(logarithmical scale)
FREO OFFSET
-20 %, ........ +20%
ATTENUATION
10dB 20dB 30dB
AMPLITUDE
3 Vpp ....... 30 Vpp
DC
DC OFFSET
-10
v ....
+10
v
PUSH FOR ZERO
OUTPUT
TTL OUTput
SGLE SWEEP
I(
ON
OFF.
SWP STOP/START
1 ....... 2000
SWP VOLTAGE
IN/OUT
1 V/ FREQ DEC
SWP PERIOD
!5:10s ....... 150s
651
252/9 to
252/11
821
252/8
822
822
200
201
252/4
653
202
652
knob for continuous fine frequency adjustment
pushbuttons for setting the fixed attenuation;
40-60 dB by combination of pushbuttons.
knob for continuous amplitude
adjustment of the output signal
push buttons for switching off the a.c. portion of the
signal
knob for continuous d.c. voltage adjustment
pull-switch for adding the d.c. voltage to the output
signal
B NC output socket for the signal
B NC output socket for the TTL signal
pushbutton for starting a single sweep period
knob for adjusting the stop frequency (ratio stop/start
frequency)
BCN input/output socket for the frequency analogue
voltage
knob for setting the sweep time
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