Annexes
R&S
®
CMW500
298User Manual 1173.9463.02 ─ 06
Command QuickBASIC com-
mand
Effect on the instrument
SPD
(Serial Poll Disable)
IBCMD (controller
%, CHR$(25))
End of serial poll.
PPU
(Parallel Poll
Unconfigure)
IBCMD (controller
%, CHR$(21))
End of the parallel-poll state.
Addressed commands
Addressed commands are encoded in the range 00 through 0F hex. They are only effec-
tive for instruments addressed as listeners.
Command QuickBASIC com-
mand
Effect on the instrument
GET
(Group Execute
Trigger)
IBTRG (device%) Triggers a previously active device function (e.g. a sweep). The
effect of the command is the same as with that of a pulse at the
external trigger signal input.
GTL
(Go to Local)
IBLOC (device%) Transition to the "Local" state (manual control).
PPC
(Parallel Poll Con-
figure)
IBPPC (device%,
data%)
Configures the instrument for parallel poll. Additionally, the
QuickBASIC command executes PPE/PPD.
SDC
(Selected Device
Clear)
IBCLR (device%) Aborts the processing of the commands just received and sets
the command processing software to a defined initial state. Does
not change the instrument setting.
7.1.3.3 Instrument Messages
Instrument messages (commands) are transferred on the data lines of the GPIB bus while
the ATN line is not active. ASCII code is used.
For structure and syntax of the instrument messages refer to Command Reference - Base
Software. The chapter also provides a detailed description of all messages implemented
by the tester.
7.2 Comparison with R&S CMU
The R&S CMW500 and the R&S CMU 200 have part of their functionality in common.
The enhanced flexibility of the R&S CMW500 entails a different SCPI command structure,
so that it is not possible to migrate remote program scripts without prior modification.
The following sections give hints for the transcription of R&S CMU 200 programs for use
on the R&S CMW500. Please note the additional hints for program upgrades in order
make full use of the measurement functionality of your R&S CMW500.
Comparison with R&S CMU
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