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GS M T ELEP H O N E
Manual
SERVICE
GSM TELEPHONE CONTENTS
1. Specification
2. Circuit Description
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
7. Flow Chart of Troubleshooting
ELECTRONICS
1 . SGH - x 4 5 0 S p e c if ic a t io n
1. GSM General Specif ication
GS M9 0 0 E GS M 9 0 0 DC S 1 8 0 0
PC S1 9 0 0
Ph a se 1 Ph a se 2 P h as e 1
F r eq . B a n d [M Hz ] 8 9 0 ~9 1 5 8 8 0 ~9 1 5 1 7 1 0 ~1 7 8 5 1 8 5 0 ~1 9 1 0
Up l in k / Do w n li n k 9 3 5 ~9 6 0 9 2 5 ~9 6 0 1 8 0 5 ~1 8 8 0 1 9 3 0 ~1 9 9 0
0~124 &
A RF C N r a n g e 1 ~1 2 4 5 1 2 ~8 8 5 5 1 2 ~8 1 0
9 7 5 ~1 0 2 3
T x /R x s p ac in g 4 5 MHz 4 5 MHz 9 5 M Hz 8 0 MH z
Mo d . B i t r at e/ 270.833kbps 2 7 0 .8 3 3 k b p s 270.833kbps 2 7 0 .8 3 3 k b p s
Bi t Pe r i o d 3.692us 3 .6 9 2 u s 3.692us 3 .6 9 2 u s
Ti me Sl o t 576.9us 5 7 6 .9 u s 576.9us 5 7 6 .9 u s
P er io d / F r am e P er i o d 4 .6 1 5 m s 4 .6 1 5 m s 4 .6 1 5 m s 4 .6 1 5 ms
Mo d u l a ti o n 0 .3 G MS K 0 .3 G MS K 0 .3 GM SK 0 .3 GM SK
M S P o we r 3 3 d Bm ~1 3 d B m 3 3 d Bm ~5 d B m 3 0 d B m ~0 d B m 3 0 d B m~0 d B m
Po w er C l as s 5 p cl ~ 1 5 p c l 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Se n si t iv i t y -102dBm - 1 0 2 d Bm -100dBm -100dBm
TDM A M u x 8 8 8 8
C el l Ra d iu s 3 5 Km 3 5 Km 2 Km -
1- 1
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SG X450 Specification
H-
2. GSM TX power class
TX Power TX Power TX Power
GSM900 DCS1800 PCS1900
control level control level control level
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