Rohde & Schwarz CMU-K20, Operating Manual

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Common: Option Query CMU-K20/21/22/23/24
1115.6088.12 6.32 E-12
Common Measurements and Command Groups
The commands for the measurement groups in this section are identical or almost identical in both test
modes. Minor differences between
Non Signalling and Signalling commands are possible; they will be
pointed out throughout the section.
Note1: Measurements and signalling states
To perform any kind of measurement and obtain a meaningful result, an appropriate test
setup is required (see application examples in chapter 2 of this manual). Consequently, if
the measurements reported in this section are performed in Signalling mode, the Call Es-
tablished (CEST) signalling state must be reached before any of the commands retrieving
test results
(READ...?, FETCh...?
,
SAMPle...?
, or
CALCulate...LIMit?)
can be
used. Test configurations, however, can be defined any time.
Exception: The wideband power
(WPOWer)
does not involve any signalling. It can be
measured irrespective of the current signalling state.
Note2: GMSK and 8PSK modulation
The keywords
[:GMSK]
and
:EPSK
in the remote control commands denote GMSK and
8PSK modulation, respectively. The
:EPSK
commands in Signalling measurements are in-
cluded in firmware versions V3.05 and higher. The firmware version numbers quoted in the
command tables refer either to GMSK modulation or EPSK modulation in Non Signalling
mode.
Option Query
The Options subsystem contains the commands for querying information on the instrument and the
available options. It corresponds to the Options tab in the Setup menu opened via the SETUP key on
the front panel.
SYSTem:OPTions:INFO:CURRent? Device Info
Response Def. value Default unit FW vers.
Example:
Rohde&Schwarz,CMU 200-1100.0008.02,840675/018,
V3.10C:SP02 2002-09-05"GSM900MS_Sig"
–
– V3.10
Command description
This command returns the information on the device comprising the manufacturer, model, serial number and
firmware version of the current function group. This command is always a query.
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