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S:\Hp8960\Generic Documents\Manual Operation Getting Started Guide\Pi_manual operation getting started guide\chapters\gsm_man_measurements.fm
GSM Mobile Measurements
Measuring Fast Bit Error
NOTE To make fast bit error measurements your mobile must be fitted with a
Test SIM card.
1. Establish a call with the mobile.
2. Press the
Measurement selection key.
3. Select the Fast Bit Error measurement.
You should hear a warbling sound from the mobile’s loudspeaker. This is the
PRBS-15 data which the test set sends to the mobile.
4. Press the Fast Bit Error Setup (
F1) key.
5. Set the measurement parameters as needed for your measurement, including:
Measurement Timeout = 13.0 s
To see the effect of cell power on fast bit error rate, press the Cell Power (
F7) key
and slowly reduce the power while observing Fast Bit Error display.
Observe how reducing the cell power
affects the fast bit error rate.
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