Keysight E3632A, User Manual

Page: 63 / 196

Operation and Features 2

Remote Voltage Sensing
E3632A User’s Guide 41
Remote Voltage Sensing
Remote voltage sensing is used to maintain regulation at the
load and reduce the degradation of regulation that would
occur due to the voltage drop in the leads between the
power supply and the load.
By connecting the power supply for remote voltage sensing,
voltage is sensed at the load rather than at the power
supply’s output terminals. This will allow the power supply
to automatically compensate for the voltage drop in
applications with long lead lengths as well as to accurately
read back the voltage directly across the load.
When the power supply is connected for remote sensing, the
OVP circuit senses the voltage at the sensing points (load)
and not the output terminals.
CV regulation
The voltage load regulation specification in Chapter 7
applies at the output terminals of the power supply. When
remote sensing, add 5 mV to this specification for each 1 V
drop between the positive sensing point and (+) output
terminal due to the change in load current. Because the
sense leads are part of the power supply’s feedback path,
keep the resistance of the sense leads at or below 0.5

per
lead to maintain the above specified performance.