Agilent Technologies 53220A, User Manual, Page: 96 / 294

96 53220A/53230A User’s Guide
3 53220A/53230A Measurements
// using CONFigure - measure rise time on the wave segment
// from -1.75V to +750 mV
*RST
// reset to start from known state
CONF:RTIM -1.75 V, 750 MV, (@1)
INP:COUP DC // set AC coupling
INP:IMP 50 // set input impedance to 50 ohm
READ?
----------------------------------------------------------
// using MEASure? - measure
fall time using 15% and 65%
// references
*RST
// reset to start from known state
MEAS:FTIM? 15PCT, 65PCT, (@2)
----------------------------------------------------------
// using CONFigure - measure fall time on the wave segment
// from +1.25V to -1.4V
*RST
// reset to start from known state
CONF:FTIM -1.4V, 1.25V, (@1)
INP:COUP DC // set DC coupling
INP:IMP 50 // set input impedance to 50 ohm
READ?
Notes
1. Lower and upper references can be specified as percentages or as absolute
levels in either the
CONFigure
or
MEASure?
command. For either rise time or
fall time measurements, the lower reference is specified first.
2. Absolute references are relative to the amplitude of the signal and must take
into consideration the counter’s input coupling and impedance settings.
3. See Chapter 4 for information on configuring the input signal path which
includes coupling and impedance.