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Figure 133 Spectrum analyzer screen shot when performing IQ tuning, part 2
7. After reducing the amplitude of the frequency components at marker 2 and 3 to a minimum, press Save &
Continue.
The EGSM tuning has now been completed.
Next action
Now, using the spectrum analyzer settings listed in Table "Spectrum analyzer settings" and the RF control
settings listed in Table "RF Control window settings", follow exactly the same procedure to perform IQ tuning
in the GSM1800 and GSM1900 bands.
Tuning TX power level
Context
This tuning is done separately in all three bands, and requires a spectrum analyzer to measure the burst power
of the GSM RF signal. When measuring the RF output (burst) power on a spectrum analyzer, use the settings
found in the following table:
Page 7–32
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RM-25
RF troubleshooting
9235618 (Issue 2)
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