Keysight E6610A, Руководство пользователя и программирования

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12 SCPI Command Reference
Keysight E6610A User and Programming Guide 81
10. QPSK EVM RMS (%)
11. QPSK EVM Peak (%)
12. Number of 16QAM Symbols
13. 16QAM EVM RMS (%)
14. 16QAM EVM Peak (%)
15. Number of 64QAM Symbols
16. 64QAM EVM RMS (%)
17. 64QAM EVM Peak (%)
18. Total Bits (number)
19. Error Bits (number)
20. Bit Error Rate
Bit error rate results are returned only if option BR1 is installed
in the E6610A.
The demodulation test model to be used is set using one of
these commands: CONFigure:RADio:TMODel or
SENSe<1|2>:CPRI:CAPTure:TMODel.
This command also generates a plot file of the EVM
constellation points, which can be exported using the
appropriate TRACE command.
FETCh[1]|2:CCDF? This command uses existing capture data and returns
the following CCDF values :
1. RMS Power in dBm
2. Crest Factor in dB
3. Peak Power in dBm
4. Peak to Average ratio for 10%, in dB
5. Peak to Average ratio for 1%, in dB
6. Peak to Average ratio for 0.1%, in dB
7. Peak to Average ratio for 0.01%, in dB
A Peak to Average ratio value of of X dB for 1% means
that 1% of the power measurements were at or above a
PAR of X dB.
MEASURE commands
A MEASURE command initiates a new data capture and then performs a
measurement on that captured data.
Command Description
MEASure[1]|2:AVGPower? Initiates a new RF capture on the selected E6610A RF RX input
and returns the total RF power in dBm.
MEASure[1]|2:CHPower? Initiates a new RF capture on the selected E6610A RF RX input
and returns the channel power in dBm.
MEASure[1]|2:OBWidth? Initiates a new RF capture on the selected E6610A RF RX