User`s guide

98 53220A/53230A User’s Guide
3 53220A/53230A Measurements
MEASure:NWIDth? [{<reference>|MINimum|MAXimum|DEFault}]
[,<channel>]
CONFigure:NWIDth [{<reference>|MINimum|MAXimum|DEFault}]
[,<channel>]
- reference specifies the threshold level where the width measurement
begins. For positive width measurements, the level at which the signal passes
through the threshold in the positive (rising) direction and again in the nega-
tive (falling direction) defines the positive width. Similarly, the level at which
the signal passes through the threshold in the negative (falling) direction and
again in the positive (rising) direction defines the negative width.
To specify a threshold level from 10% to 90% of the peak-to-peak input volt-
age, use a numeric value with no suffix or with the suffix PCT (e.g. 30 or
30 PCT).
To specify a threshold level 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 reference 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).
Positive and Negative Pulse Width Measurement Examples
// using MEASure? - measure positive width at a 50% (0V)
// reference
*RST // reset to start from known state
MEAS:PWID? 50, (@1)