Nokia 1506, Руководство по обслуживанию

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RH-128
Service Software Instruction
● CP DB HWD PCS TxAGC Freq Chan Adj
● CP DB HWD PCS Tx Limit Freq Chan Adj
● CP DB HWD PCS Tx Power Detect
● CP DB HWD PCS Tx Power Detect Freq Chan Adj
CDMA TxAGC Baseline
CDMA TxAGC Baseline overview
The basic mechanism of the calibration is to transmit a signal at the antenna port with a certain PDM
setting, the power of which is measured by a power meter, spectrum analyzer, or CDMA test set. The
PDM setting and resulting power are then recorded. Care should be taken to provide enough calibration
points near maximum power to ensure accurate transmission power at this level.
CDMA TxAGC Baseline Procedure
A. Perform the procedure at “nominal” or room temperature.
B. The baseline RxAGC calibration must have already been completed.
C. The RxAGC frequency channel adjustment, and temperature adjustment tables must be zeroed.
D. Connect the antenna to CDMA test set.
E. Reset the UUT, start Debugtool, and do not press the Power key on the Virt MMI (i.e., PS should
be off and LID reset). Send the message CP Enable, with Disable option.
F. Set the frequency channel to the calibration frequency using the PLL Channel Config. This is the
baseline frequency, since the frequency compensation table is not active. Set the Control mode as
Manual, the band to target band.
G. Initialize the TxAGC PDM (HW Val in the box below) with a suitably low known value, to prevent a
potential surge of Tx power when the transmitter is turned on in the next step. Use the DSPM Tx AGC
Config. Set the Mode as Manual, the Method as HW_Value, the Hyst as current state.
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