Speci
fi
cations
Table 6: Signal measurement characteristics (cont.)
Characteristic
Description
Waveform Quality
(Rho,
ρ
)
Measures the waveform quality as de
fi
ned by IS-97-D using a pilot-only CDMA (or cdma2000-1x)
signal.
Units and Resolution
None: 0.0001
Accuracy
± 0.005, 0.9
≤ ρ ≤
1.0; Usable range 0.5
≤ ρ ≤
1.0
Degradation due to adjacent channel CDMA carriers (having equivalent power): add ±0.015.
Reference information: The Rho measurement is only speci
fi
ed for a pilot-only CDMA signal. The
accuracy speci
fi
cation given here applies only to measurements made on a pilot-only CDMA signal,
with the instrument set to use the pilot-only method. For measurements on signals that are not
pilot-only, see the Estimated Waveform Quality measurement.
Waveform Quality (Rho
Pilot, Rho MAC, Rho
Data) (1xEV-DO)
Rho (
ρ
) for 1xEV-DO signals provides an indication of the signal to distortion ratio for the transmitted
signal. This quality measure is an indication of how similar the transmitted signal is to a perfect
signal. Rho can vary between 0.0 and 1.0, where 1.0 represents a perfect signal.
Rho Pilot is only computed on chips in the Pilot intervals. Pilot Rho is measured on the pilot interval
of 20 half slots.
Rho MAC is only computed on chips in the MAC interval. Rho MAC is measured on the MAC
interval of 20 half slots.
Rho Data is only computed on chips in the Data interval. Rho Data is measured on the Data interval
of 20 half slots.
Units and Resolution
None: 0.0001
RF Scout Quick Start User Manual
91
