Tx Power Tune Up Procedure - Samsung SGH-T519 Service Manual

6-3. Tx Power Tune up Procedure

- GMSK
1) Procedure:
a. Calibraion equipment HP8960 and the cell phone are connected
through RF cable.
b. Target power ( required power level according to the specification
which should be set by calibration program) is set to equipment as
power level (ex: GSM 5 level is 32.5 dBm).
c. Activate phone in Tx_Mode_Only.
d. HP8960 equipment measures transmitted power through rf test cable
from the phone and reports measured level to calibration program.
e. The program compares measured power with the target power.
f. The calibration program decides power code which is defined in
advance in the program and writes the codes to the flash memory in
the phone.
2) Target value is defined according to the value of GSM specification.
See the TX power level definition table below.
3) Target values of the peak level of the phone are set normally in
conducted mode
- GSM850 5 level : 32.5dBm
- EGSM900 5 level : 32.5dBm
- DCS 0 level : 29.5dBm
- PCS 0 level : 29.5dBm (Tolerance : -2dB ~ +1dB )
4) Accuracy
All the TX level from the phone after tuned-up satisfy the GSM
specification
5) TX ramp mask specification applied to the calibration program :
This Document can not be used without Samsung's authorization
SAMSUNG Proprietary-Contents may change without notice
Test Command & Test Procedure
6-2