Keysight Technologies RP7942A User Manual

Master/Slave Command Details
Once connected, the group of units are controlled through the master and appear as a single higher
power unit. All programming commands should be sent to the master unit.
The following SCPI commands are not supported in master/slave mode:
ARB
all ARB commands
ELOG
all ELOG commands
CURRent:SHARing
Current sharing is automatically enabled
FETCh:CURRent<:HIGH|:LOW|:MAX|:MIN>
all :HIGH :LOW :MAX and :MINcommands
FETCh:POWer<:MAX|:MIN>
all :MAX and :MINcommands
FETCh:VOLTage<:HIGH|:LOW|:MAX|:MIN>
all :HIGH :LOW :MAX and :MINcommands
MEASure:CURRent<:HIGH|:LOW|:MAX|:MIN>
all :HIGH :LOW :MAX and :MINcommands
MEASure:POWer<:MAX|:MIN>
all :MAX and :MINcommands
MEASure:VOLTage<:HIGH|:LOW|:MAX|:MIN>
all :HIGH :LOW :MAX and :MINcommands
LIST
all LIST commands
SYSTem:REBoot
Reboot command
TRIGger:ARB:SOURce
ARB source command
TRIGger:ACQ<:CURR:LEV|:VOLT:LEV>
Level triggered acquisitions
POWer:LIMit?
Power limit query
The following SCPI commands can be sent to the slave unit in master/slave mode.
FETCh<:VOLTage|:CURRent|:POWer>
only :VOLT :CURR :POW commands
MEASure<:VOLTage|:CURRent|:POWer>
only :VOLT :CURR :POW commands
All front panel SYSTEM\IO commands only available on front panel menu
Parallel Operation at Maximum Current - RP793xA, RP794xA
Due to individual circuit tolerances between the paralleled units in a Master/Slave configuration, the
current contributed by each unit may differ slightly from the “ideal amount”, which assumes that all
units share current exactly equally. When operating at the maximum current rating of the paralleled
group, these individual circuit tolerances could cause one or more of the units to depart from CV
operation and enter into CC operation. The maximum current rating of the group will still be available,
but the dynamic transient response may change due to the transition of one of the units into CC.
If strict CV operation is required under all operating conditions, especially at the maximum current
rating of the paralleled group, it is recommended to set the CC limit to the maximum programmable
value on the Master unit. If this is not sufficient, reduce the total requested load current, or consider
adding an extra unit to provide additional headroom for the group to maintain CV operation under
maximum load conditions.
Master/Slave Troubleshooting
If the following status indicators appear on the front panel:
4 Using the Regenerative Power System
114 Keysight RP7900 Series Operating and Service Guide

Keysight Technologies RP7942A Specifications

General

Brand	Keysight Technologies
Model	RP7942A
Category	Power Supply
Language	English