Nokia N81 Service Manual

SA-113 RF coupler
SA-113 is an RF coupler for WCDMA and GSM RF testing. It is used
together with the product-specific flash adapter.
For the attenuation values, see SA-113 attenuation values
(page 2–7).
SA-113 attenuation values
The following table shows attenuations from the antenna pads of the mobile terminal to the SMA connectors
of SA-113:
Slider OPEN Slider CLOSE
Band Channel
UP/
DOWN
TX f [MHz] RX f [MHz] TX Loss
[dB]
RX Loss
[dB]
TX Loss
[dB]
RX Loss
[dB]
GSM 850
Low 128 824.2 869.2 7.34 13.16 6.84 13.33
Mid 189 836.4 881.4 6.47 12.07 5.90 12.04
High 251 858.8 893.8 5.94 10.65 5.26 10.05
GSM 900
Low 975 880.2 925.2 11.76 6.45 10.52 5.44
Mid 37 897.4 942.8 10.56 6.12 8.63 4.79
High 124 915.8 960.8 4.31 6.48 4.13 4.93
GSM 1800
Low 512 1710.2 1805.2 11.82 19.03 10.61 18.03
Mid 698 1747.4 1842.4 11.68 16.89 10.79 15.33
High 885 1784.8 1879.8 12.24 14.88 11.19 13.16
GSM 1900
Low 512 1850.2 1930.2 12.15 12.06 11.05 11.32
Mid 661 1880.0 1960.0 11.85 12.79 10.95 11.76
High 810 1909.8 1989.8 11.93 13.20 11.35 11.89
WCDMA I
Low
9613 /
10563 1922.4 2112.4 17.60 16.82 17.47 15.21
Mid
9750 /
10700 1950.0 2140.0 17.80 15.61 17.24 14.54
High
9887 /
10837 1977.6 2167.6 17.82 15.77 17.19 15.20
RM-179; RM-223
Service Tools and Service Concepts
Issue 1 COMPANY CONFIDENTIAL Page 2 –7
Copyright © 2007 Nokia. All rights reserved.

Nokia N81 Specifications

General

Display diagonal	2.4 \
Display resolution	240 x 320 pixels
Display number of colors	16.78 million colors
Ringer type	Polyphonic
Internal memory	8196 MB
Front camera type	Single camera
Rear camera resolution	1600 x 1200 pixels
Personal info management (PIM)	Alarm clock, Calculator, Calendar, Notes, To-do list
Headphone connectivity	3.5 mm
USB 2.0 ports quantity	1
Text prediction system type	T9
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
Form factor	Slider
Product color	Brown
Gaming time	6 h
Browsing time	5 h
Talk time (2G)	4 h
Talk time (3G)	3 h
Battery capacity	1050 mAh
Standby time (2G)	1020 h
Continuous audio playback time	11.5 h
Continuous video playback time	4.5 h
2G standards	GPRS
Data network	wcdma
Bluetooth version	2.0+EDR
Bluetooth profiles	A2DP, BIP, DUN, FTP, GAP, GOEP, HFP, HSP, OPP, SPP
SIM card capability	Single SIM

Weight and Dimensions

Depth	102 mm
Width	50 mm
Height	17.9 mm
Weight	140 g