Tuning Steps; Rssi Reference Signal Level Storage; Afc Diagram Storage - Nokia NME-2A Series Tuning Instructions

NME–2A
Tuning Instructions

Tuning Steps

1. RSSI Reference Signal Level Storage

Reference value for the received signal strength meter are program tuned.
RSSI reference signal level programming:
– Start the service software and go to "Main" menu.
– Select "Phone mode" and select local mode with Enter key.
– Select "Testing and Adjustments" menu and press Enter .
– Select "Adjustments" menu and press Enter .
– Connect RF generator to antenna connector at 947.06771 MHz.
– Adjust signal generator level to –57 dBm + cable attenuation.
– Select "RSSI Calibration" and press Enter .
– RSSI offset value should be within 37...49 dB.
– AGC calibration values (Compensation Term) should be
below 2.0dB.
– Press Esc key.
– Store the value to the EEPROM with Y key.

2. AFC Diagram Storage

This tuning is used to calibrate the automatic frequency control range.
AFC tuning:
– Set RF generator frequency 947.06771 MHz at level –57 dBm.
– Select adjustments menu option "AFC Diagram" and press Enter
– Check that " Cont mode channel" is 60
– The measurement result should be;
– Press Esc key and store with Y key.
Page 10
Low over –22 kHz (< –10 kHz)
Middle 1.5 kHz (depends on generator frequency accuracy)
High below +22 kHz (> 10 kHz)
P.A.M.S.
Technical Documentation
Issue 2 05/2000