Set Pulse Width; Set Duty Cycle Limit; Set Trigger Delay; Connect The Device Under Test - HP 8510 User Manual

Set Pulse Width

After instrument preset, the pulse width is set to 10 microseconds. Use the following
procedure to set a di erent pulse width.
Press NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
PULSE WIDTH
width.

Set Duty Cycle Limit

After instrument preset, the duty cycle limit is set to 10%. This means that the maximum
duty cycle will never be allowed to be greater than 10 percent regardless of the pulse width.
To set the duty cycle limit, press
knob, step keys, or numeric entry to set the desired maximum duty cycle limit. Note that
the actual duty cycle may be less.

Set Trigger Delay

After Preset, the trigger delay is set to 5 microseconds. This means that the frequency
domain measurement will take place 5 microseconds after time zero. Time equals zero seconds
is when the HP 8510 pulse output goes to the active level turning on the pulse modulator.
Use the following procedure to set the trigger delay.
Press
4 STIMULUS MENU 5
or numeric entry to set the desired trigger delay.
Notice that if the trigger delay is set to outside the time interval that the pulse is On, the
trace is noisy due to low signal levels.

Connect the Device Under Test

Figure 6-1 shows the response of the device to the pulsed-RF stimulus over the current
frequency sweep.
6-2 Frequency Domain Point-in-Pulse Measurements
. Use the knob, step keys, or numeric entry to set the desired pulse
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DUTY CYCLE
NNNNNNNNNNNNNN NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MORE TRIGGER MODE
on the Pulse Con guration menu. Use the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN , then use the knob, step keys,
TRIGGER DELAY