Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 356 / 388

NB-IoT NPRACH Measurement
R&S
®
CMW-KM300/-KS300
356 User Manual 1178.5689.02 ─ 06
– "Event": The command initiates an event.
●
Parameter usage
The parameter usage is indicated by the keyword preceding the parameters:
–
"Parameters" are sent with a setting or query command and are returned as
the result of a query.
– "Setting parameters" are sent with a setting command.
– "Query parameters" are sent with a query command, to refine the query.
– "Return values" are returned as the result of a query.
●
Firmware/Software:
Indicates the lowest software version supporting the command. Command
enhancements in later software versions are also indicated.
4.5.1.5 Reliability Indicator
The first value in the output arrays of
FETCh...?, READ...?
and
CALCulate...?
queries indicates the most severe error that has occurred during the measurement.
Example for an output array: 0, 10.22, 10.15, 10.01, 10.29, 100 (reliability = 0, followed
by 5 numeric measurement values).
The reliability indicator has one of the following values:
●
0 ("No Error") :
Measurement values available, no error detected.
●
1 ("Measurement Timeout") :
The measurement has been stopped after the configured measurement timeout.
Measurement results can be available. However, at least a part of the measure-
ment provides only
INValid
results or has not completed the full statistic count.
●
2 ("Capture Buffer Overflow") :
The measurement configuration results in a capture length that exceeds the availa-
ble memory.
●
3 ("Input Overdriven") / 4 ("Input Underdriven") :
The accuracy of measurement results can be impaired because the input signal
level was too high / too low.
●
6 ("Trigger Timeout") :
The measurement could not be started or continued because no trigger event was
detected.
●
7 ("Acquisition Error") :
The R&S CMW could not properly decode the RF input signal.
●
8 ("Sync Error") :
The R&S CMW could not synchronize to the RF input signal.
●
9 ("Uncal") :
Due to an inappropriate configuration of resolution bandwidth, video bandwidth or
sweep time, the measurement results are not within the specified data sheet limits.
●
15 ("Reference Frequency Error") :
The instrument has been configured to use an external reference signal. But the
reference oscillator could not be phase-locked to the external signal (for example
signal level too low, frequency out of range or reference signal not available at all).
Command Reference
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