Annexes
R&S
®
ZNB/ZNBT
1543
User Manual 1173.9163.02 ─ 62
Universal commands
Universal commands are encoded in the range 10 through 1F hex. They are effective
for all instruments connected to the bus without previous addressing.
Command
QuickBASIC com-
mand
Effect on the instrument
DCL
(Device Clear)
IBCMD (controller
%, CHR$(20))
Aborts the processing of the commands just received and sets
the command processing software to a defined initial state.
Does not change the instrument settings.
IFC
(Interface Clear)
IBSIC (controller%) Resets the interfaces to the default setting.
LLO
(Local Lockout)
IBCMD (controller
%, CHR$(17))
The LOC/IEC ADDR key is disabled.
SPE
(Serial Poll Enable)
IBCMD (controller
%, CHR$(24))
Ready for serial poll
SPD
(Serial Poll Dis-
able)
IBCMD (controller
%, CHR$(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
effective 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.
12.3.3.3
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.
Interfaces and connectors
