Remote Control
R&S
®
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User Manual 1173.9557.02 ─ 13
Method
Commands / Example
Assign or query trace name of a trace numbered
<Trc>
CONFigure:TRACe<Trc>:NAME 'ABCD'
CONFigure:TRACe<Trc>:NAME?
(returns '
ABCD
')
Query trace number assigned to a trace named
'ABCD'
CONFigure:TRACe<Trc>:NAME:ID? 'ABCD'
(returns the actual trace number; the trace suffix is
ignored)
Table 5-3: Mixed commands
Method
Commands / Example
Query channel name for a trace referenced by its
trace name
CONFigure:TRACe<Trc>:CHANnel:NAME?
'ABCD' (returns the channel name for trace '
ABCD
';
the trace suffix is ignored)
Query channel number for a trace referenced by its
trace name
CONFigure:TRACe<Trc>:CHANnel:NAME:ID?
'ABCD'
(returns the actual channel number for trace
'
ABCD
'; the trace suffix is ignored)
5.4 Command Processing
The block diagram below shows how GPIB bus commands are serviced in the instrument.
The individual components work independently and simultaneously. They communicate
with each other by means of so-called messages.
5.4.1 Input Unit
The input unit receives commands character by character from the controller and collects
them in the input buffer. The input unit sends a message to the command recognition as
soon as the input buffer is full or as soon as it receives a delimiter,
<PROGRAM MESSAGE
TERMINATOR>
, as defined in
IEEE 488.2
, or the interface message
DCL
.
If the input buffer is full, the message data traffic is stopped and the data received up to
then is processed. Subsequently the traffic is continued. If, however, the buffer is not yet
full when receiving the delimiter, the input unit can already receive the next command
during command recognition and execution. The receipt of a
DCL
clears the input buffer
and immediately initiates a message to the command recognition.
5.4.2 Command Recognition
The command recognition stage analyzes the data received from the input unit. It pro-
ceeds in the order in which it receives the data. Only a
DCL
is serviced with priority, e.g.
a
GET
(Group Execute Trigger) is only executed after the commands received before.
Each recognized command is immediately transferred to the data set but not executed
immediately.
Command Processing