When using the
Fault
or
pins only on the primary unit. You do not need to connect the Fault/Inhibit pins of the secondary units.
Primary/Secondary Command Details
Once connected, the group of units are controlled through the primary and appear as a single higher
power unit. All programming commands should be sent to the primary unit.
The following SCPI commands are not supported in primary/secondary mode:
CURRent:SHARing
ELOG:CURRent<:MAX|:MIN>
POWer:LIMit?
SYSTem:REBoot
The following additional SCPI commands are not supported in primary/secondary mode on firmware
revisions prior to B.04.04.809:
ARB
ELOG
FETCh:CURRent<:HIGH|:LOW|:MAX|:MIN>
FETCh:POWer<:MAX|:MIN>
FETCh:VOLTage<:HIGH|:LOW|:MAX|:MIN>
MEASure:CURRent<:HIGH|:LOW|:MAX|:MIN>
MEASure:POWer<:MAX|:MIN>
MEASure:VOLTage<:HIGH|:LOW|:MAX|:MIN>
LIST
TRIGger:ARB:SOURce
TRIGger:ACQ<:CURR:LEV|:VOLT:LEV>
The following SCPI commands can be sent to the secondary unit in primary/secondary mode.
FETCh<:VOLTage|:CURRent|:POWer>
MEASure<:VOLTage|:CURRent|:POWer>
All front panel SYSTEM\IO commands
Parallel Operation at Maximum Current - RP793xA, RP794xA
Due to individual circuit tolerances between the paralleled units in a primary/secondary 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
Keysight RP7900 Series Operating and Service Guide
Inhibit
functions on the rear panel digital connector, connect the Fault/Inhibit
4 Using the Regenerative Power System
Current sharing is automatically enabled
ELOG :MAX and :MIN commands
Power limit query
Reboot command
all ARB commands
all ELOG commands
all :HIGH :LOW :MAX and :MIN commands
all :MAX and :MIN commands
all :HIGH :LOW :MAX and :MIN commands
all :HIGH :LOW :MAX and :MIN commands
all :MAX and :MIN commands
all :HIGH :LOW :MAX and :MIN commands
all LIST commands
ARB source command
Level triggered acquisitions
only :VOLT :CURR :POW commands
only :VOLT :CURR :POW commands
only available on front panel menu
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