Agilent Technologies 8922M, S GSM manual RACHs, Timing Err, Reset Call, Counts, Meas

Models: 8922M S GSM

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Screens

Cell Control 2

25. RACHs

This field indicates the number of RACHs received during the current call or since

 

the last Reset.

26.Relative MS This field displays the length of time between when the Agilent 8922M/S expected

Timing Err

the uplink burst to arrive and the time it actually arrived.

 

Timing error measurements on the uplink burst are made from the center of bit 0,

 

and are relative to the default trigger delay value of 473.4 T (see Measurement Sync,

 

Trigger Delay).

 

 

The Agilent 8922M/S normally expects the uplink burst 468.75 bit periods after the

 

beginning of the downlink burst. The trigger delay’s default value of 473.4 T reflects

 

an additional Agilent 8922M/S delay of 4.65 T (468.75 + 4.65 = 473.4 T).

 

The accuracy of this measurement is ±0.25 T. For more accurate measurements,

 

refer to DSP Analyzer, Data Bits, First Bit.

 

See Also

Screens: Phase/Freq: Data Bits (First Bit)

27. Reset (Call

This field clears out the counts of pages, RACHs, synchronization, and decode

Counts)

errors detected.

 

28.Reset (SACCH This field clears-out all of the SACCH measurements.

Meas)

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Page 149
Image 149
Agilent Technologies 8922M, S GSM manual RACHs, Timing Err, Reset Call, Counts, Meas