Temperature Sensor Calibration; Gsm Receiver Tunings; Rx Calibration (Gsm) - Nokia RM-132 Service Manual & Parts Manual

RM-132; RM-133
RF Troubleshooting and Manual Tuning Guide
4. Check that the detected PA manufacturers are corresponding to the actual chips on the board.
5. To end the procedure, click Close.

Temperature sensor calibration

Context
There is a temperature sensor intergrated into the RF ASIC. The RF ASIC produces a DC-voltage, which is
temperature dependent.
Temperature sensor calibration is done in room temperature, in which offsets caused by variations with Rx/
Tx ASIC and the AD-converter inside EM ASIC N2200, are removed.
The engine calibrates itself, no external equipment is required.
The temperature of the engine must be 23°C plus or minus two degrees.
Steps
1. From the "Operating mode" dropdown menu, set mode to "Local".
2. From the Tuning menu, choose "Temperature Sensor Calibration".
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".
Issue 1
Table 17 Temperature sensor calibration tuning limits
Typ Max
-4 20
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