3 53220A/53230A Measurements
108 Keysight 53220A/53230A User’s Guide
READ?
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// using MEASure? - measure fall time using 15% and 65%
// references
*RST // reset to start from known state
MEAS:FTIM? 15PCT, 65PCT, (@2)
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// 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.
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