Agilent Technologies 35670A Manual page 518

[SENSe:]
To turn off the autorange feature:
Set the input range by specifying a value with the VOLT:RANG[:UPPer] command.
Send VOLT[1|2|3|4]:RANG:AUTO OFF. The range is fixed at the last autorange value.
If the channel specifier is not used, the command defaults to channel 1.
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