Tune up procedure

FCC ID: NM8TP

Parts List/Tune Up Info

Download: PDF
FCCID_465288

Tune Up Procedure

TX Calibration • Auto Frequency Control (AFC) Calibration • Auto Power Control (APC) Calibration RX Calibration • Auto Gain Control (AGC) Calibration • Radio Signal Strength Indicator (RSSI) Calibration

Initiation • Format the Flash File System. • List the files and check whether the directories are created or not.

AFC Calibration • Setup the mobile to transmit on the Channel 190 Power level 12 • Measure the Frequency Error • Adjust AFC to make the Frequency Error approach zero • Write down AFC value • Store AFC value

APC Calibration • Setup the mobile to transmit on the Channel 190 for GSM850, 700 for DCS and 660 for PCS. GSM850 Power Level (PL)= 5~19, DCS/PCS (PL)= 0~15. • Measure the output power corresponding to the APC. • Adjust APC to make the output power close to the expected output power for different power level. • Store APC levels.

AGC Calibration • Setup the mobile to receive on the ARFCN. • Set the AGC 34dB in the receiver. • Set the Generator Level to TL=-74.5dBm. • Measure the DSP_PM • Calculate Gmagic value • Store Gmagic value

RSSI Calibration • Setup the mobile to receive on the ARFCN, GSM850: n=190, DCS: n=700, PCS: n=660. • Set the AGC 34dB in the receiver. • Set the Generator Level to TL= -74.5dBm. • Measure the DSP_PM • Calculate ChanCalX value. • Store ChanCalX value.

RSSI Calibration • For GSM, DCS and PCS GSM has 10 intervals of ARFCN to be calibrated. DCS/PCS has 7 intervals of ARFCN to be calibrated.


Document Created: 2004-08-05 17:15:27
Document Modified: 2004-08-05 17:15:27
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC