AMETEK BPS Series Programming Manual - Manual (Page 53)

BPS / MX / RS Series SCPI Programming Manual AMETEK Programmable Power
Manual P/N 7003-961 Rev. AA 53
4.4 Instrument Subsystem
The Instrument subsystem controls the phase mode of the AC/DC power source for
configurations capable of operating in three phase mode.
Subsystem Syntax
INSTrument
COUPle ALL | NONE Couples or uncouples commands
:NSELect 1 | 2 | 3 Selects phase A, B or C using numeric references
:SELect A | B | C Selects phase A, B or C using character references
INSTrument:COUPle
This command may be used to couple all output phase in three phase mode. When the
phases are coupled, commands issues subsequently affect all three phases. This allows the
output voltage to be programmed for all three phases using a single command and without
the need to select each phase individually. When uncoupled, commands issued must be
preceeded by the PHAS:NSEL command and will only affect the selected command.
Available parameters are ALL to couple all phases and NONE to uncouple all phases. In
single phase mode, the INST:COUP commands are ignored.
Command Syntax INSTrument:COUPle
Parameters ALL | NONE
Examples INST:COUP ALL
Query Syntax INST:COUP?
Returned Parameters
Related Commands INST:NSEL INST:SEL
INSTrument:NSELect
This command may be used select a specific output phase in three phase mode using a
numeric reference. A 1 denotes phase A, a 2 denotes phase B and a 3 denotes Phase C. As
long as the instrument state is coupled however, programming command will affect all
phases. As soon as the INST:COUP NONE command is issued, the last selected phase
becomes selected. To immediately change the output of a single phase only, make sure the
instrument state is uncoupled when issuing the INST:NSEL command.
Note that the MEASuse and FETCh subsystems are not affected by the INST:COUP
command and always operate on the selected phase only. This means the instrument can
remain in coupled mode while doing measurement queries using “INST:NSEL
;FETC:VOLT?;*WAI”
. Note that when the instrument is subsequently put in the
uncoupled state using “INST:COUP NONE”, the last issued phase selection will be in effect.
To make sure the desired phase is selected, follow the “INST:COUP NONE” command with
an “INST:NSEL ” command
Command Syntax INSTrument:NSEL
Parameters 1 | 2 | 3
Examples INST:NSEL 1
Query Syntax INST:NSEL?
Returned Parameters
Related Commands INST:COUP INST:SEL