![Nokia RM-57 Скачать руководство пользователя страница 210](http://html.mh-extra.com/html/nokia/rm-57/rm-57_service-manual_1699439210.webp)
7. Click Tune.
8. Check that the RSSI level value is between the limits presented in this table. If this is not the case, try clicking
the Tune button again.
Table 16 RSSI level values
Band
Min
Max
Unit
GSM850/GSM900
-115
-90
dB
GSM1800
-115
-85
dB
GSM1900
-115
-100
dB
9. Make sure that the "Save to Phone" check box is checked and click Stop.
Next action
Repeat steps 3 to 7 for GSM1800 and GSM1900.
Transmitter tunings
Tx IQ tuning
Context
The Tx path branches to I and Q signals at the RF I/Q modulator. Modulator and analog hardware located after
the modulator cause unequal amplitude and phase disturbance to I and Q signal paths. Tx IQ tuning balances
the I and Q branches.
RM-57/58
Nokia Customer Care
RF Troubleshooting and Manual Tuning Guide
Page 7–30
Company Confidential
Issue 1
Copyright ©2005 Nokia. All Rights Reserved.
Содержание RM-57
Страница 327: ...9 System Module Nokia Customer Care Issue 1 Company Confidential Page 9 1 Copyright 2005 Nokia All Rights Reserved ...
Страница 377: ...10 Schematics Nokia Customer Care Issue 1 Company Confidential Page 10 1 Copyright 2005 Nokia All Rights Reserved ...
Страница 391: ...www s manuals com ...