Agilent Technologies Cell Phone S GSM Bedienungsanleitung PDF herunterladen (Seite 288)

7-4

Messages

Sync Status

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

demodulated data. Some screens use this ﬁeld to display progress during multi-burst

measurement. When the measurement is completed to ﬁeld returns to its normal

state.

Bad Sync (for

demodulation only)

This message appears if a synchronization error happened since the last

Demodulation Arm (when Adjust Mode is disabled) or since the last change to Trig

Delay (when Adjust Mode is enabled with Demod Arm already selected).

Possible causes of Bad Sync are:

• Useful bits occurred while power was too low.

• Demodulation trigger too early or too late.

• FM (bit) errors found while synchronizing to desired midamble.

• RF overload.

FM Error At least one bit error was detected when comparing the measured midamble to the

selected Midamble or User Deﬁned Sync Pattern, (Sync Mode=Midamble only).

Level Late The amplitude of the burst did not rise until after the ﬁrst few bits were received.

Level Short The amplitude of the burst fell before the last few bits were received.

Low Level The DSP analyzer’s RF level did not rise high enough to make a valid measurement.

No Error No synchronization error occurred.

RF Ovrload The measurement hardware overloaded during the measurement. (Increase RF

Analyzer Amplitude setting to correct).

ShortBurst The amplitude envelope was shorter than the expected burst.

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Agilent Technologies Cell Phone S GSM Bedienungsanleitung Seite 288