Rohde & Schwarz 1145.1010.04/05/06, Operating Manual

Page: 783 / 813

R&S
®
ZVA/ZVB/ZVT Rear Panel Connectors
1145.1084.12 8.11 E-3
Addressed Commands
Addressed commands are encoded in the range 00 through 0F hex. They are only effective for
instruments addressed as listeners.
Command QuickBASIC
command
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
Configure) 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.
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.
Structure and syntax of the instrument messages are described the SCPI Reference chapter. The
chapter also provides a detailed description of all messages implemented by the analyzers.
RSIB Interface Functions
This section lists all functions of the DLL
"RSIB.DLL" or "RSIB32.DLL"
or
"librsib.so"
, which
allow to produce control applications.
•
Variables
•
Interface Functions
Variables ibsta, iberr, ibcntl
Same as with the National Instruments interface, successful execution of a command can be checked
by means of the variables
ibsta
,
iberr
and
ibcntl
. To this end, references to the three variables
are transferred to all RSIB functions. In addition, the status word
ibsta
is returned as a function value
by all functions.