Keysight 53230A - Page 107

53220A/53230A Measurements 3
Keysight 53220A/53230A User’s Guide 107
The commands used to make rise and fall time measurements are:
MEASure:RTIMe? [{<lower_ref>|MINimum|MAXimum|DEFault}
[,{<upper_ref>|MINimum|MAXimum|DEFault}]] [,<channel>]
CONFigure:RTIMe [{<lower_ref>|MINimum|MAXimum|DEFault}
[,{<upper_ref>|MINimum|MAXimum| DEFault}]] [,<channel>]
MEASure:FTIMe? [{<lower_ref>|MINimum|MAXimum|DEFault}
[,{<upper_ref>|MINimum|MAXimum|DEFault}]] [,<channel>]
CONFigure:FTIMe [{<lower_ref>|MINimum|MAXimum|DEFault}
[,{<upper_ref>|MINimum|MAXimum| DEFault}]] [,<channel>]
– lower_ref and upper_ref specify the input signal reference level, either in
terms of percent of peak-to-peak voltage, or in absolute voltage. To specify
rise or fall time percentage levels from 10% to 90%, use a numeric value with
no suffix or with the suffix PCT (e.g. 30 or 30 PCT).
To specify rise or fall time levels in absolute voltage within the ranges:
5.125V range: -5.125V to +5.125V
51.25V range: -51.25V to +51.25V
use a numeric value with the V or MV (millivolt) suffix: 100 MV or .1V (spaces
allowed).
If either lower_ref or upper_ref is omitted or specified in percent, auto-leveling
is enabled. If specified in absolute voltage, auto-leveling is disabled
– channel is counter channel 1 or 2 specified as (@1) or (@2).
Rise and fall time measurement examples
// using MEASure? - measure rise time using 20% and 80%
// references
*RST // reset to start from known state
MEAS:RTIM? 20, 80, (@2)
// 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