Gsm Receiver Tunings - Nokia 6680 RM-36 Service Manual

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3. Click "Tune".
Min
-20
4. To save the calibration values, click "Write".
5. To finish the calibration, click "Close".

GSM receiver tunings

Rx calibration (GSM)
Context
Rx Calibration is used to find out the real gain values of the GSM Rx AGC system and tuning response of the AFC
system (AFC D/A init value and AFC slope)
Steps
1. Connect the module jig's GSM connector to signal generator.
2. From the "Operating mode" dropdown menu, set mode to "Local".
3. From the Tuning menu, choose GSM -> Rx Calibration.
4. Check the "Load from Phone" check box and clear the "Save to Phone" check box.
5. From the Band dropdown menu, choose GSM900.
Page 7–26
Table 12 Temperature sensor calibration tuning limits
Typ
-4
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RF Troubleshooting and Manual Tuning Guide
Max
20
RM-36
Unit
V
Issue 1