Command Reference
R&S
®
CMW500
194User Manual 1173.9463.02 ─ 02
Command Parameters/
Remarks
Short Description
*IDN? – IDentifica-
tion Query
–
query only
Queries the instrument identification string of the R&S CMW500.
*IST? – Individual
STatus query
–
query only
Returns the contents of the IST flag in decimal form (0 | 1). The
IST-flag is the status bit which is sent during a parallel poll.
*OPC – OPeration
Complete
–
event
Sets bit 0 in the event status register when all preceding com-
mands have been executed. This bit can be used to initiate a
service request. The query form writes a "1" into the output buffer
as soon as all preceding commands have been executed. This
is used for command synchronization.
To perform this command for all sub-instruments use *GOPC
instead.
*OPT? – OPTion
identification query
–
query only
Queries the options included in the instrument and returns a list
of the options installed. The response consists of arbitrary ASCII
response data according to IEEE 488.2. The options are returned
at fixed positions in a comma separated string. A zero is returned
for options that are not installed.
Using this common command is not recommended, because an
improved instrument-specific command is available, see
SYSTem:BASE:OPTion:LIST on page 254.
*PRE – Parallel poll
Register Enable
0...255 Sets parallel poll enable register to the value indicated. Query
*PRE? returns the contents of the parallel poll enable register in
decimal form.
Alternatively *XPRE can be used with a comma separated list of
mnemonics enclosed in brackets. Mapping for bit 7 to 2:
OPER,RQS,ESBit,MAV,QUES,ERR. Example: *XPRE
(ESBit,MAV) sets bit 5 and 4 (ESB bit and MAV bit).
*PSC – Power on
Status Clear
0 | 1 Determines whether the contents of the ENABle registers is
maintained or reset when the instrument is switched on. *PSC =
0 causes the contents of the status registers to be maintained.
Thus a service request can be triggered on switching on in the
case of a corresponding configuration of status registers ESE
and SRE. *PSC = 0 resets the registers. Query *PSC? reads out
the contents of the power-on-status-clear flag. The response can
be 0 or 1.
*RCL – ReCaLl 0...99
no query, not IEEE
488.2-confirmed
Recalls the instrument settings from an intermediate memory
identified via the specified number. The instrument settings can
be stored to this memory using the command *SAV with the
associated number. To load instrument settings from a file to the
memory see MMEMory:LOAD:STATe on page 216.
See also Save/Recall Dialog and MMEMory:RCL on page 218.
*RST – ReSeT –
no query
Sets the instrument parameters to values for good remote oper-
ation. The command affects only the current sub-instrument.
*SAV – SAVe 0...99
no query, not IEEE
488.2-confirmed
Stores the current instrument settings under the specified num-
ber in an intermediate memory. The settings can be recalled
using the command *RCL with the associated number. To trans-
fer the stored instrument settings to a file see MMEMory:
STORe:STATe on page 219.
See also Save/Recall Dialog and MMEMory:SAV on page 219.
Common Commands
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