CONTROLS AND INDICATORS
FRONT PANEL (Refer to Fig. 1)
1. POWER Switch. Turns power on and off.
2. RANGE Switch. Selects output frequency range. Seven
ranges from 1 Hz to 10 MHz. Switch indicates maximum
frequency of range and is adjusted with COARSE
FREQUENCY control to 0.1 times the maximum. For
example, if the 100 kHz range is selected, the output
frequency can be adjusted from 10 kHz to 100 kHz.
3. FUNCTION Switch. Selects sine, square, or triangle
waveform at OUTPUT jack.
4. OUTPUT LEVEL Control. Controls the amplitude of the
signal at the OUTPUT jack. Output level can be decreased
by approximately 20 dB with this control.
5. DC OFFSET Control. Enabled by the DC OFFSET Switch
(12). Clockwise rotation from center changes the DC offset
in a positive direction while counterclockwise rotation
from center changes the DC offset in a negative direction.
6. OUTPUT Jack. Waveform selected by FUNCTION switch
as well as the superimposed DC OFFSET voltage is
available at this jack.
7. TTL/CMOS Jack. TTL or CMOS square wave, depending
on the position of the CMOS LEVEL switch (13) is output
at this jack. This output is independent of the OUTPUT
LEVEL and DC OFFSET controls.
8. CMOS LEVEL Control. Rotating this control clockwise
increases the amplitude of the CMOS square wave at the
TTL/CMOS jack.
9. VCG/SWEEP Jack. Controlled by SWEEP EXT/INT
Switch (12). When SWEEP EXT is selected, jack is the
Voltage Controlled Generator input and permits external
control of generator output frequency by a DC voltage
input at this jack. A positive voltage will decrease
frequency. When SWEEP INT is selected the internally
generated sweep voltage is available at this jack for
connection to an oscilloscope.
10. DUTY CYCLE Control. Enabled by the DUTY CYCLE
Switch (14). Rotation from center position adjusts the
duty cycle of the main OUTPUT signal.
11. -20 dB Switch. When engaged, the signal at the
OUTPUT jack is attenuated by 20 dB.
12. SWEEP INT/EXT Switch. When engaged (INT) enables
the sweep mode of operation. Sweep rate is controlled by
SWEEP TIME control (18) and sweep magnitude is
controlled by the SWEEP WIDTH control (16). When
released (EXT), allows external control of generator output
frequency by a DC voltage input at the VCG/SWEEP jack
(9).
13. SWEEP LIN/LOG Switch. When engaged (LOG) selects
logarithmic sweep characteristic and in the released (LIN)
position selects a linear sweep characteristic.
14. DC OFFSET Switch. When engaged, enables operation
of the DC OFFSET control (5).
15.CMOS LEVEL Switch. When engaged, changes the TTL
signal to CMOS signal at the TTL/CMOS jack
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