Manual - 8500A Series Peak Power Meter - Giga-tronics

Series 8500A Peak Power Meters
Automatic Timing Measurement Commands
When making timing measurements, the delay window should be set so that the time to be measured
corresponds to at least one third of the total delay. For example, do not use a delay window of 10 µs to
measure rise times faster than 3 µs; go to a shorter delay window.
(Note: *RISE, *FALL, *PLWD, *RSFL, and *RSWD are operable only in the Marker Mode)
*RISE
Measure and output rise time of the displayed pulse profile. Rise time is from the
10% power point to the 90% power point on the rising edge of the pulse. Output
format for channel A is:
RISAnn.nnnEsnn
(n = seconds; Esnn = exponent)
Output format for channel B is:
RISBnn.nnnEsnn
*FALL
Measure and output fall time of the displayed pulse profile. Fall time is from the
90% power point to the 10% power point on the falling edge of the pulse. Output
format for channel A is:
FALAnn.nnnEsnn
(n = seconds; Esnn = exponent)
Output format for channel B is:
FALBnn.nnnEsnn
*PLWD
Measure and output pulse width of the displayed pulse profile. Pulse width is the
time between the 50% power points on the rising and falling edges of the pulse.
Output format for channel A is:
WIDAnn.nnnEsnn
(n = seconds; Esnn = exponent)
Output format for channel B is:
WIDBnn.nnnEsnn
*RSFL
Measure and output rise time and fall time of the displayed pulse profile. For
definitions, see *RISE and *FALL descriptions. Output format for channel A is:
RISAnn.nnnEsnn,FALAnn.nnnEsnn
(n = seconds; Esnn = exponent)
Output format for channel B is:
RISBnn.nnnEsnn,FALBnn.nnnEsnn
3-28 Manual No. 20790, Rev C, November 1998
Superceded by Revision D, March 2009