Getting started
Repetition Rate controls
The pulse generator provides a means of setting the repetition rate from 1 to
100 kHz using the built-in rate generator. Use the Range switch to select a coarse
repetition rate from 100 to 0.01 kHz, and then use the Fine vernier control to
fi
ne
tune the repetition rate. The maximum repetition rate is internally limited to
100 kHz to protect the internal circuitry of the generator.
Ext trigger input
To trigger the generator from an external source through the front panel BNC
connector, set the Repetition Rate Range switch to
Ext
. The external trigger
input requires a pulse >1.5 V and triggers the pulse generator on positive going
edge pulses.
External trigger pulses in excess of 100 kHz can be applied to the generator
without damage. The trigger circuitry is equipped with a lockout gate that disables
the circuitry for 8.8
μ
s after it has been triggered.
Use the Single Pulse toggle switch to produce single-shot pulses under manual
control.
Pulse Delay control
The Delay control is a ten-turn potentiometer to obtain a high-resolution pulse
delay at the main trigger output BNC connector. The delay from the trigger pulse
to the output pulse is adjustable from 0 to 100 ns.
Pulse Duration control
Use the Duration control to obtain a high-resolution pulse duration (width) from
0.5 to 100 ns. The control is a ten-turn potentiometer.
Trigger outputs
Two BNC connectors provide a main trigger output and an auxiliary trigger
output. Both outputs provide 800 mV pulses into 50
Ω
. They provide TTL-level
(>2.0 V) pulses into a high impedance.
The main trigger output connector is located directly under the Delay control
and is labeled
0.8 V
. This output allows for variable delay between the trigger
and the pulse.
An auxiliary trigger output labeled
115 ns
provides a pulse 115 ns prior to the
pulse output.
Attenuation controls
Use these controls to adjust the attenuation of the pulse output. The Coarse control
sets the output amplitude from 0 to 60 dB in 10 dB steps and the Fine control sets
the amplitude from 0 to 10 dB in 1 dB steps.
Pulse polarity switch
Use this switch to set the polarity of the pulse.
Tektronix PSPL2600C Pulse Generator User Manual
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