Setting Measurement Parameters (cdma2000/1xEV-DV)

The following table shows how measurement parameters affect cdma2000 demodulation.

cdma2000 Demodulation Parameters

Time Sequence

Parameters Involved

Effect

Result

Notes

Signal setup

Range

Trigger

Frequency/span

Input

User Corrections

Sets up basic signal parameters required for demodulation

Raw data

Any changes made in the signal setup parameters later in the time sequence require that a new measurement be performed

Demodulation

Demodulation Setup parameters:

Chip Rate

Direction

Long Code Mask

Base Walsh Code Length

PN Offset

Walsh Code QOF

Multicarrier Filter

Active Channel Threshold

Determines the type of demodulation performed on the input time data

Demodulated, symbol-locked data in the default display format

Result length determines the amount of data that is demodulated.

Post-demodulation

Meas Offset

Meas Interval

Walsh Code Number

Despread Channel Walsh Code Length

CDP Layer Walsh Code Length

Specifies channel and determines how much data is used for the trace data results.

Demodulated data in the default display format.

Changes may be made in the display parameters without acquiring a new measurement

Display Formatting

Trace data

Trace format

X and Y Scale

Marker

Normalize IQ Traces

Formats the data for display

Formatted, demodulated data

Changes may be made in the display parameters without acquiring a new measurement

See Also

Parameter Interactions

Display Limitations

Resolution Bandwidth

Span considerations

Setting up a cdma2000 measurement

Troubleshooting (cdma2000/1xEV-DV)