Specifications

Chapter 2 Command System RIGOL
M300 Programming Guide 2-79
MEASure:VOLTage:AC?
Syntax MEASure:VOLTage:AC?
[{<range>|AUTO|MIN|MAX|DEF}[,{<resolution>|MIN|MAX|DEF}],] (@<scan_list>)
Description Configure the specified channels to the ACV measurement function with the specified range
and resolution, start a scan and read the readings.
Parameters
Name
Type
Range
Default
<range> Numeric
Any numeric value between MIN and MAX. The
final range is decided by the “
Principle of setting
with greater value
”.
For MC3232 and MC3264 module, the standard
values of the range: {200mv|2V|20V|150V}.
wherein, MIN=200mV, MAX=150V, DEF=AUTO.
For MC3120, MC3132, MC3164 and MC3324
module, the standard values of the range:
{200mV|2V|20V|200V|300V}, wherein,
MIN=200mV, MAX=300V, DEF=AUTO.
AUTO
<resolution> Numeric
Can receive any numeric value, but the resolution is fixed at
6
1
/
2
digits.
<scan_list>
Scan
List
One or more channels (only for the multiplexer
channels), the rules are as follows:
(@101): channel 01 on the module in Slot1;
(@101:103): channel 01 through 03 on the module
in Slot1;
(@101:103,301): channel 01 through 03 on the
module in Slot1 and channel 01 on the module in
Slot3.
None
Explanation  This command is equivalent to the CONFigure:VOLTage:AC command followed by a
READ? command.
 You can select autoranging to allow the instrument to automatically select a proper
measurement range or you can select a fixed range to set the range manually.
 Autoranging rule: for signals under test that is between 10%*Range and
110%*Range, the instrument automatically selects Range as the current range.
 When <range> is set to DEF or AUTO, an error will be generated if <resolution> is set
to a numeric value, because the instrument cannot calculate the integration time
accurately (especially when the input signal is continuously changing) when the
autoranging is combined with a numeric resolution. If your application requires
autoranging, be sure to specify "DEF" for <resolution> or omit the parameter.
 If the input signal is greater than can be measured on the selected range, the
instrument gives an overload indication: "OVERLOAD" from the front panel or
"±9.9E+37" from the remote interface.

<scan_list> overwrites the current scan list.
Return
Format
The query returns the readings in scientific notation. Multiple return values are separated
by commas.
Example MEAS:VOLT:AC? AUTO,DEF,(@101)
The query returns +9.689453687E-02.
Related
commands
CONFigure:VOLTage:AC
READ?
ROUTe:CHANnel:DELay
[SENSe:]VOLTage:AC:BANDwidth