Agilent Technologies S GSM, 8922M manual Measurements

NOTE

Making Measurements

Measurements

By varying the Base station Amplitude field (4), you can test the mobile phone’s receiver sensitivity. Actual results can be compared with the values reported by the radio.

If the Base Station amplitude is lowered too much, the radio will lose the call. This will need to be re-established by increasing the base station amplitude, returning to the cell control screen, and originating the call before you can continue measurements.

NOTE

Output RF Spectrum Measurements (Available if Option 006, Spectrum Analyzer, is Fitted)

Not all phone types support burst-by-burst BER measurements.

The Output RF spectrum measurement shows the spectral power (due to the effects of ramping or modulation) at a specified frequency offset. These are relative measurements that compare the result at the offset frequency with the value at the center frequency. You can also view the output RF spectrum trace from this screen.

Method

Select OUT RF SP in the cell control screen.

To make a measurement, do the following:

•Ensure the Freq Offset is set to zero (1), see Figure 2-11 on page 2-21.

•Select Ramp Ref or Mod Ref (2) (depending on whether you want to make a ramping measurement or a modulation measurement).

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