Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 108 / 388

NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
108 User Manual 1178.5689.02 ─ 06
2.5.1.4 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).
●
16 ("RF Not Available") :
The measurement could not be started because the configured RF input path was
not active.
This problem can occur if a measurement is started in combined signal path mode
and the master application has not yet activated the input path.
●
17 ("RF Level Not Settled") / 18 ("RF Frequency Not Settled") :
The measurement could not be started because the R&S CMW was not yet ready
to deliver stable results after a change of the input signal power / the input signal
frequency.
●
19 ("Call Not Established") :
For measurements: The measurement could not be started because no signaling
connection to the DUT was established.
For DAU IMS service: Establishing a voice over IMS call failed.
Command Reference
深圳德标仪器
135-1095-0799