Getting Started
4
CFG253 User Manual
3. DC OFFSET. Pull out this control to activate. The DC OFFSET
control sets the DC level and polarity of the signal at the MAIN
output. When the control is pressed in, the signal is centered at
zero VDC.
4. SYMMETRY Knob. This knob changes the duty cycle of a
square wave signal or the rise and fall times of sawtooth and sine
wave signals. This feature is called symmetry because it affects
the visual symmetry of the waveform along its longitudinal axis.
The knob has no effect unless the SYMMETRY button (see
item 11) is pushed in.
When the SYMMETRY knob is at the center position, the
symmetry of the waveform is unaffected. Rotating the knob
clockwise has an increasing effect on the waveform; rotating the
knob counterclockwise has the opposite effect, as shown in
Table 1.
Table 1: Effect of Symmetry Controls on Waveforms
Type
Waveform SYMMETRY CCW SYMMETRY CW
Square
Triangle
Sine
5. RANGE (Hz) Buttons. These buttons determine the frequency
range of the signal at the MAIN output connector.
6. FUNCTION Buttons. The sine, square or sawtooth buttons select
the type of signal provided at the MAIN output connector.
7. FREQUENCY Control. This variable control determines the
frequency of the signal at the MAIN output connector within the
range set by the RANGE buttons.
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