R&S
®
CMW 500 Remote Control
Control of the Instrument
Operating Manual 1202.3986.32 – 03 85
If a previously initiated measurement (which may be of the same type) is still running,
the new measurement remains in the "PENDing" or "QUEUed" measurement
substates (see Queuing of Measurements) and is activated only after the previous
measurement has completed the current measurement cycle. After the new
measurement has entered the "RUN" state, the previous results are discarded.
If the measurement cannot be started due to an unrecoverable resource conflict (e.g. a
missing software option) it remains in the OFF state. The SCPI error "–213, Init
ignored, ...", is generated.
Conflicting settings cause restart of the measurement
Many measurement parameters (e.g. RF path settings, filter settings, etc.) have a
direct impact on the measurement results. Changing these parameters while the
measurement is running results in wrong results.
To avoid misleading results, a running measurement is re-started if a parameter with
direct impact on the results is changed. All values acquired so far are discarded; the
statistics counters are re-set to zero.
READ...? command
READ...? can be used instead of INITiate... to start a (single shot) measurement.
READ...? also returns the results; see Retrieving Measurement Results.
5.4.1.3
A
BORt:<A
pplicati
on>:M
EA
Suremen
t<i>
Aborts the current measurement immediately and causes the measurement to enter
the OFF state. All measurement values are set invalid (INV or NAV); the hardware
resources are released for other measurements.
5.4.1.4
STOP:<A
pplicat
ion>
:MEA
Surement
<i>
Halts the measurement immediately. The measurement enters the RDY state; the R&S
CMW 500 retains all valid measurement results. Moreover, the hardware and system
resources continue to be allocated to the measurement.
5.4.1.5 Measurement Substates
Each running measurement can be in one of the following substates:
Substate For main
state
Values Description
Synchronization RUN PENDing Waiting for resource allocation, adjustment, hardware
switching
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