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17-62 SCPI Command Reference Models 2500 and 2502 User’s Manual

Description These commands are used to manually select the range for the speciﬁed

source. Range is selected by specifying the approximate source magni-

tude that you will be using. The instrument will then go to the lowest

range that can accommodate that level. For example, if you expect to

source levels around 3V, send the following command:

:SOURce1:VOLTage:RANGe 3

The above command will select the 10V range for the channel 1 source.

As listed in “Parameters,” page 17-61, you can also use the MINimum,

MAXimum and DEFault parameters to manually select the source

range. The UP parameter selects the next higher source range, while

DOWN selects the next lower source range.

Note that source range can be selected automatically by the instrument.

See the next command.

AUTO <b>

:SOURce[1]:VOLTage:RANGe:AUTO <b> Select auto range for source 1

:SOURce2:VOLTage:RANGe:AUTO <b> Select auto range for source 2

Parameters <b> = 0 or OFF Disable auto range

1 or ON Enable auto range

Query AUTO? Query state of auto range

Description These commands are used to enable or disable auto range for the speci-

ﬁed source. When enabled, the instrument will automatically select the

most sensitive range for the speciﬁed source level. When disabled, the

instrument will use the range that the instrument is currently on.

Auto range will be disabled if a ﬁxed range is selected. See the previous

command.

Both *RST and :SYSTem:PREset enables source auto range. When the

Model 2500 goes into the local state, source auto range disables.

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Keithley 2500 User Manual

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