Screens

Phase/Freq, Phase Err

4. 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.

 

 

NOTE

When measuring noisy signals (approx 10 deg rms), define your entire burst as a User

 

Defined Sync Pattern, and select Expected. This will eliminate the problem of bit

 

errors causing gross peak phase errors.

 

See Also

Screens: Measurement Sync

 

5. SyncStatus

This field displays any errors that occurred while trying to synchronize to the

 

demodulated data.

 

See Also

Making Measurements: Solving Problems Messages

6. Trig Delay

This field sets the time delay between a valid trigger event and the beginning of a

 

measurement.

 

 

Range

0 to 5000.00 μs.

7. View

This field selects alternate views of the measurement.

 

Choices

Phase Main

 

 

Data Bits

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Agilent Technologies S GSM, 8922M manual Frequency error