Screens

Phase/Freq, Data Bits

Phase/Freq, Data Bits

 

This screen displays the measured demodulated data bits and tags indicating how

 

each bit was interpreted by the measurement.

 

 

NOTE

When multiburst is turned on, display update rate for power versus time and phase

 

traces will be slowed down while multiple bursts are collected.

 

 

1. Bursts

This field is only shown when multi-burst is ON. It shows the burst count setting.

2. Midamble

This field provides the option of specifying the bits used for calculating an ideal

 

phase trajectory. (The DSP Analyzer calculates the ideal phase trajectory, then

 

compares it with the transmitted signal’s phase trajectory to determine phase and

 

frequency error).

 

 

Choices

Expected causes the DSP Analyzer to calculate the ideal phase

 

 

trajectory using the bits displayed on the Meas Sync screen. This

 

 

field is called Midamble or User Defined Sync Pattern, depending

 

 

on which Burst Type is chosen.

 

 

Measured causes the DSP Analyzer to calculate the ideal phase

 

 

trajectory based entirely on demodulated data bits.

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Agilent Technologies 8922M, S GSM manual Phase/Freq, Data Bits