Tektronix NetTek YBT250, Руководство пользователя

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Taking Measurements
3- 102
YBT250 Field Transmitter & Interference Tester User Manual
Table 3--18 describes the 1xEV-DO Signal Quality measurements.
Table 3- 18: 1xEV-DO Signal Quality measurement fields
Field Description
Rho Pilot Rho Pilot is computed only on the pilot interval of 20
half slots. Since pilot is always transmitted, these
results are available on every measurement attempt.
Rho MAC Rho MAC is computed only on the MAC interval of 20
half slots. Since MAC is always transmitted, these
results are available on every measurement attempt.
Rho Data Rho Data is computed on the data interval of 20 half
slots. These results are available for all non-idle
(active data) signal but may not be updated every
signal measurement attempt.
EVM Pilot EVM Pilot is the EVM value computed on chips in the
Pilot intervals of 20 half slots of the waveform. Since
Pilot is always transmitted, these results are available
on every measurement attempt.
EVM MAC EVM MAC is the EVM value computed on chips in the
MAC intervals of 20 half slots of the waveform. Since
MAC is always transmitted, these results are available
on every measurement attempt.
EVM Data EVM Data is the EVM value computed on chips in the
data intervals of 20 half slots of the waveform. These
results are available for all non-idle (active data)
signals but may not be updated every signal
measurement attempt.
Data Type The constellation type used to encode the user data
bits in the data interval of a non-idle slot. Constellation
type can be QPSK, 8PSK or 16QAM.