[SENSe:]CURRent:AC:RANGe:AUTO

[SENSe:]CURRent:AC:RANGe:AUTO
[SENSe:]CURRent:DC:RANGe:AUTO

Syntax | Description | Parameters | Remarks | Return Format | Examples

Syntax

[SENSe:]CURRent:AC:RANGe:AUTO <state>[,(@<ch_list>)]
[SENSe:]CURRent:AC:RANGe:AUTO? [(@<ch_list>)]

[SENSe:]CURRent:DC:RANGe:AUTO <state>[,(@<ch_list>)]
[SENSe:]CURRent:DC:RANGe:AUTO? [(@<ch_list>)]

Description

These commands disable or enable autoranging for AC and DC current measurements on the specified channels. Autoranging is convenient because the instrument automatically selects the range for each measurement based on the input signal detected.If you omit the optional <ch_list> parameter, this command applies to the currently defined scan list.

Used With:

• 34901A   20 Channel Multiplexer (2/4-wire) Module (channels 21 and 22 only)

Parameters

Name	Type	Range of Values	Default Value
<mode>	Boolean	{OFF|0|ON|1}	This is a required parameter.
<ch_list>	Channel List	One or more channels, as shown: (@321) - channel 21 on the module in slot 300. (@221:222) - channels 21 through 22 on the module in slot 200. (@121:122,222,321:322) - channels 21 and 22 on the module in slot 100, channel 22 on the module in slot 200, and channels 21-22 on the module in slot 300. Note that the channels must be of the form s21 and s22, where s is the first digit of the slot number.	If you omit the optional <ch_list> parameter, this command applies to the currently defined scan list.

Remarks

• Autorange thresholds:
         Down range at: <10% of range
         Up range at:        >120% of range
• With autoranging enabled, the instrument selects one of the following ranges based on the input signal detected:
  
  10 mA
  100 mA
  1 A
• Selecting a discrete range (see [SENSe:]CURRent:AC:RANGe command) will disable autoranging on the specified channels.
• The CONFigure and MEASure? commands automatically enable autoranging if the first parameter is AUTO, DEF or omitted.
• The instrument enables autoranging after a Factory Reset (*RST command). An Instrument Preset (SYSTem:PRESet command) or Card Reset (SYSTem:CPON command) does not change the setting.

Return Format

The query returns 0 (OFF) or 1 (ON) for each channel in the <ch_list>. Multiple values are separated by commas.

Examples

In these examples, you could substitute the node name DC for AC.

The following command turns on AC current measurement autoranging for two channels.

CURR:AC:RANG:AUTO 1, (@221:222)

The following query returns the value of autoranging for three channels.

CURR:AC:RANG:AUTO? (@221,321,322)

Typical Response: 1,0,1

See Also

SENSe Subsystem Introduction