External Triggering Check - HP 8510 User Manual

External Triggering Check

Connect the output of the external pulse generator to the HP 8510 rear panel TRIGGER IN
connector and to the RF source PULSE MODULATION INPUT (Figure 9-1). Set the pulse
generator to deliver a continuous TTL pulse train, going low for at least 100 nanoseconds at
any pulse repetition period less than about 1 millisecond. Activate the pulse generator pulse
output.
Press
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The network analyzer should sweep normally in either the frequency domain or the pulse
pro le domain. The analyzer is not a ected by excess trigger inputs.
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Press
PULSE PROFILE
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Modulation Input. The signal level is high when the pulse is On and low when the pulse is
O .
Press then move the marker to various points on the trace.
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Adjust the time span and number of points for the desired display. Notice that the
measurement resolution period is set by the pulse width, stop time, and number of points.
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FREQUENCY
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PULSE CONFIG DETECTOR: WIDE BW
Press then move the marker to various points on the trace.
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In the frequency domain, adjust the trigger delay so that the measurement takes place at the
desired time after the falling edge of trigger in.
You may also monitor the rear panel STOP SWEEP output with an oscillosope. Stop Sweep
goes high to indicate that the HP 8510 is ready to make the measurement. Change the period
of Trigger In and Pulse Modulation Input and notice the timing of the Stop Sweep. The HP
8510 Pulse Output is not active when external triggering is selected.
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MORE TRIGGER MODE
. The trace represents the signal at the RF source Pulse
. If the W annotation does not appear, press
.
Operating the HP 8510 for Pulsed-RF Measurements 5-9
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TRIGGERING EXTERNAL
.
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MORE
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