Auto <B>|Once; Ulimit <N - Keithley 6517B Reference Manual

Model 6517B Electrometer Reference Manual
:AUTO <b>|ONCE
This command is used to control the auto range for Auto and Manual V-source Ohms.
Usage
[:SENSe[1]:RESistance[:AUTO]:RANGe:AUTO <b>|ONCE
[:SENSe[1]:RESistance:MANual:CRANge:AUTO <b>|ONCE
:AUTO?
<b>
Details
Description These commands are used to control autoranging. With autoranging enabled, the
instrument automatically goes to the most sensitive range to perform the measurement.
The ONCE parameter is analogous to a momentary toggle switch. When :AUTO
range enables and the most sensitive range is selected for the input signal. Auto range is disabled,
but the selected measurement range is retained. Note that the instrument must be on the ohms
function in order for ONCE to be effective. Using ONCE while on any other function results in an error.
The autorange commands (:RANGe:AUTO and :CRANge:AUTO) are coupled to the commands that
manually select the measurement range (:RANGe <n> and :CRANge <n>). When autorange is
enabled, the parameter value for the manual range command changes to the automatically selected
range value. Thus, when autorange is disabled, the instrument remains at the automatically selected
range. When a valid manual range command is sent, autoranging disables.
When using auto range, upper and lower range limits can be established for Auto V-source Ohms to
keep the instrument from autoranging to ranges that are not going to be used.
Also see
:ULIMit <n>
:LLIMit <n>
:ULIMit <n>
This command is used to set the upper limit for Auto V-source Ohms.
Usage
[:SENSe[1]:RESistance[:AUTO]:RANGe:AUTO:ULIMit <n>
Also see
None
6517B-901-01 Rev. C / August 2015
 1 or ON: Enable auto range
 0 or OFF: Disable auto range
ONCE: Enable and then disable auto range

(on page 14-67)
(on page 14-68)
Section 14: SCPI command reference
ONCE is sent, auto
14-67