Features and Functions 3
Keysight 34420A User’s Guide 83
Voltage Limited Measurements
Voltage limited resistance measurements clamp the open circuit voltage to 
predefined limits.
– Voltage limits apply only to 4-wire ohms measurements.
– Voltage limited resistance measurements are only available on the 10 W and 
100 W ranges. If a manual range is selected in either 2-wire or 4-wire ohms, 
and then Voltage Limited measurements are enabled, the range will be set to 
the highest valid range (either 10 W or 100 W).
– The open circuit voltage can be limited to 20 mV, 100 mV, or 500 mV.
– Setting the Low Power measurement mode will cancel the Voltage Limited 
mode.
– Front panel operation: Enable or disable the voltage limit under the 5: LOW 
VOLT W command in the MEASure menu.
Set the voltage limit under the 6: LoV LIMIT W command in the MEASure menu.
– Remote operation: the following command enables or disable the low voltage 
limit mode:
SENSe:FRESistance:VOLTage:LIMit {OFF|ON}
Set the limit with the following command:
SENSe:FRESistance:VOLTage:LIMit:VALue {<value>|MIN|MAX}