8
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 5Hz to 5MHz. Switch indicates maximum
frequency of range and is adjusted with COARSE
FREQUENCY control to 0.1 times the maximum. For
example, if the 500kHz range is selected, the output
frequency can be adjusted from 50kHz to 500kHz.
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 Jack
. Voltage Controlled Generator input.
Permits external control of generator output
frequency by a DC voltage input at this jack. A
positive voltage will decrease frequency.
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.
-20dB Switch
. When engaged, the signal at the
OUTPUT jack is attenuated by 20dB.
12.
DC OFFSET Switch
. When engaged, enables
operation of the DC OFFSET control (5).
