Agilent Technologies 8922M, S GSM manual To the selected Midamble or User Defined Sync Pattern

13.Midamble Start Bit Position/Sync Pattern Start Position

14.Single/Cont (Meas Trig)

NOTE

NOTE

15. Status (Use Mem)

16. Sync Mode

Screens

Measurement Sync

If Midamble Start Bit Position is displayed, the number displayed represents the expected position (within the Burst Type you have selected) of the first bit of the burst’s midamble. Example: If you have selected Burst Type TSC0, the Midamble Start Bit Position will be 61, and you will see this number displayed in this field and in the Midamble field to the right.

If Sync Pattern Start Position is displayed, the number displayed represents the expected position (within a User Defined burst) of the first bit in a user defined pattern that the DSP Analyzer will try to synchronize to. The field labeled Burst Type must be set to User Def for Sync Pattern Start Position to be displayed.

Single performs one GSM measurement (DSP Analyzer, Pulse On/Off, and Output RF Spectrum) after Meas Arm is selected and a valid trigger event occurs.

Cont performs GSM measurements continuously. Each time a GSM measurement is performed, the measurement screen will be updated with new information.

Screens that display traces update more slowly than screens that display numbers.

If no measurements are being made while in continuous (Cont), check Trig Qual (see Screens:RF Generator/RF Analyzer). If it is set to RF Power, change it to Normal.

This field will indicate whether any data is available for a Use Mem measurement, and whether current data has had a measurement performed on it. (The Use Mem function allows DSP measurements over one archived GSM burst.)

•No Data: No data has been stored.

•Old Data: Data is available for a measurement, but Digital Demod has been disarmed and then armed again since the data was stored. This indicates that a measurement was made on the data.

•New Data: Data is available for a measurement and Digital Demod has not been

disarmed and then armed again since the data was stored.

See AlsoKeys: Use Mem Screens: Measurement Sync (Status (Use Mem)) Screens: Digital Demod (Trig Source (Use Mem))

This field selects how the location of the demodulated data bits are determined within the measured burst.

Choices	Midamble attempts to bit pattern match the demodulated data bits
	to the selected Midamble or User Defined Sync Pattern.
	Amplitude centers the demodulated data within the detected
	amplitude envelope.

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