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108 Multimeter Command Reference Chapter 3
:VOLTage:AC?
MEASure:VOLTage:AC? [<range>|MIN|MAX|DEF|AUTO
[,<
resolution>|MIN|MAX|DEF]] selects the AC-coupled RMS voltage function and
allows you to specify the range and resolution (see range versus resolution table at
start of chapter).
Parameters
Comments • To select a standard measurement range, specify range as the input signal’s
maximum expected voltage. The multimeter then selects the correct range to
accept the input.
• The AUTO or DEFault option for the range parameter enables autorange.
The
DEF option for the resolution parameter defaults the integration time to
10 PLC.
• The MIN and MAX parameters select the minimum or maximum values for
range:
For range:
MIN = 0.1V; MAX = 300V.
For resolution:
MIN selects the best resolution (the smallest value) for the
selected range.
MAX selects the worst resolution (the largest value) for the
selected range. See Table 3-4 on page 71 for valid resolution choices for
each range.
• To select autorange, specify DEF for range or do not specify a value for the
range and resolution parameters. In the autorange mode, the multimeter
samples the input signal before each measurement and selects the appropriate
range.
• To specify a MIN or MAX resolution while autoranging, you must specify
MEAS:VOLT:AC? DEF (you cannot omit the range parameter). This prevents
the
MIN or MAX resolution from being interpreted as a range setting and the
resulting command becomes
MEAS:VOLT:AC? DEF,MIN or
MEAS:VOLT:AC? DEF,MAX.
Example Making AC Voltage Measurements
MEAS:VOLT:AC? 0.54,MAX
Function: AC volts; range selected: 1V;
MAX resolution: 100µV.
Parameter Name Parameter Type Range of Values Default Units
<
range>
numeric 0.1V|1V|10V|100V|300V|
MIN|MAX|DEF|AUTO
volts
<resolution>
numeric
resolution|MIN|MAX|DEF
volts