Nokia E62 Service Manual

Min Typ Max Unit
I DC offset / Q DC
offset
-6 -4 6 %
Ampl -1 0 1 dB
Phase 85 90 95
○
GSM1800/GSM1900
I/Q DC -6 0.5 6 %
Ampl -1 0 1 dB
Phase 95 100 110
○
Tx power level tuning (GSM)
Context
Because of variations at IC process and discrete component values, actual transmitter RF gain of each phone
is different. Tx power level tuning is used to find out mapping factors called 'power coefficients’. These adjust
the GSM transmitter output power to fulfill the specifications.
For EDGE transmission the bias settings of the FEM are adjusted in order to improve linearity. This affects the
PA gain and hence the power levels have to be aligned separately for EDGE transmission.
Tx power level tuning has to be performed on all GSM bands.
Steps
1. Connect the phone to a spectrum analyzer.
2. From the dropdown menus, set "Operating mode" to Local, "System mode" to GSM, and Band to GSM900.
3. From the Tuning menu, choose GSM -> Tx Power Level Tuning.
4. Set Mode to Automatic and Edge to Off.
5. Set the spectrum analyzer for power level tuning:
Frequency channel frequency (836.6MHz GSM850, 897.4MHz
GSM900, 1747.8MHz GSM1800, 1880MHz
GSM1900)
Span 0 Hz
Sweep time 2ms
Trigger Video triggering (-10dBm)
Resolution BW 3MHz
Video BW 3MHz
RM-88
Nokia Customer Care RF Troubleshooting and Manual Tuning Guide
Page 7 –32 COMPANY CONFIDENTIAL Issue 1
Copyright © 2006 Nokia. All rights reserved.

Nokia E62 Specifications

General

Panel type	LCD
Display resolution	320 x 240 pixels
Display number of colors	16.78 million colors
Ringer type	Polyphonic
Processor frequency	0.235 GHz
Internal memory	80 MB
Compatible memory cards	miniSD
Multimedia Messaging Service (MMS)	Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network
Bundled software	S 60 UI
Form factor	Bar
Product color	Silver, White
Talk time (2G)	5.5 h
Battery capacity	1500 mAh
Standby time (2G)	330 h
2G standards	EDGE, GPRS
Keyboard layout	QWERTY
Personal info management (PIM)	Alarm clock, Calculator, Calendar, Notes

Weight and Dimensions

Depth	14 mm
Width	69.7 mm
Height	177 mm
Weight	144 g