Use As Pulse Generator - UNISource Corporation FG-8102 Operation Manual

constant terminating impedance may be maintained while injecting signal into
moderate and high impedance circuits(500Ω and up)by adding a coaxial tee
in the output cable and connecting a 50Ω termination to one leg. Remove the
50Ω termination when injecting into a 50Ω circuit. Also keep DC injection
point, the DC offset should be set to match the circuit voltage, or blocking
capacitor may be required to avoid DC loading with 50Ω.
E. When using the higher output frequencies and when using the square wave
output, terminate the cable in 50Ω to minimize ringing. Keep the cables as
short as possible.
F. To set output amplitude to a specific level, measure peak to peak amplitude
on an oscilloscope.

3-4. Use As Pulse Generator

In a symmetrical square wave, sine wave, or triangle wave, the positive and
negative transitions are of equal time duration, or 1:1 ratio. This is the condition
when the SYMMETRY control off. When the SYMMETRY control is pulled and
rotated, the positive transition can be stretched in relation to the negative transition,
up to at least, 10:1 ratio. Square waves can be stretched into rectangular waves or
pulses, triangle waves can be stretched into distorted wave shape called a skewed
sine wave. FIG 5. illustrates the types of waveforms possible and includes a
summary of control settings used to obtain the desired waveform.
1)Procedure
A. Setup generator as described for function generator operation. Display the
output of generator on an oscilloscope.
B. Select the desired type of waveform with the Function Switches. Press the
square wave button for pulses, triangle button for ramp waves or sine wave
button for skewed sine waves.