User Guide

NSM–5

Service Software Instructions

PAMS Technical Documentation

Page 89

Issue 1 02/2002

 Nokia Corporation

3. AM suppression tuning

This operation is recommended when RX components have been

changed (between N505/Hagar and Z670/antenna switch).

AM suppression calibration is for tuning four Hagar parameters to get as

small RSSI value as possible.

For AM–suppression calibration external signal generator with AM–modula-

tion is needed.

Select

Am Suppression...

from

Tuning

menu.

Signal generator setup:

AM–modulation, fmod = 1 kHz, mod. depth = 83%

f = ch(default)+10 MHz,

P = –23 dBm (EGSM)

P = –26 dBm (PCN)

Press

Measure

button.

Press

button.