Nokia 5110 Manuale Di Servizio
PAMS
Technical Documentation
NSE–1
Tuning Instructions
Page 10
Original 03/98
Tuning Steps
1. RX Calibration (AGC + AFC)
Reference values for the received signal strength meter are program
tuned.
tuned.
RSSI reference signal level programming:
– Select
Tuning –> RX Calibration
– Connect RF generator to antenna connector at 947.067710 MHz.
– Adjust signal generator level to –55 dBm + cable attenuation.
– Press
OK
button
– Adjust signal generator level to –80 dBm + cable attenuation.
– Press
OK
button.
Service software reports:
A Table of AFC Parameters:
AFC INIT Value
AFC Slope
PSW Slope
AFC Slope
PSW Slope
A Table for AGC Calibration:
AGC in 3 db steps 0...57 dB
DAC and voltage reading for each gain value
DAC and voltage reading for each gain value
– Press
SAVE
button