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Specification
2.
2-1.
GSM General Specification
Freq. Band[MHz]
Uplink/Downlink
ARFCN range 0~124 & 975~1023 512~885
Tx/Rx spacing 45MHz 95MHz
Mod. Bit rate/
Bit Period
Time Slot Period/Frame
Period
EGSM 900 DCS1800
880~915
925~960
270.833kbps
3.692us
576.9us
4.615ms
1710~1785
1805~1880
270.833kbps
3.692us
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 30dBm~0dBm
Power Class
Sensitivity -102dBm -100dBm
TDMA Mux 8 8
Cell Radius 35Km 2Km
max
(
4
+33
dBm)
max
(
1
+30
dBm)
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Specification
2-2.
GSM TX power class
TX Power
control level
533±2
631±2
729±2
827±2
925±2
10 23±2
11 21±2
GSM900
dBm
dBm
dBm
dBm
dBm
dBm
dBm
TX Power
control level
0 30±3
1 28±3
2 26±3
3 24±3
4 22±3
5 20±3
6 18±3
DCS1800
dBm
dBm
dBm
dBm
dBm
dBm
dBm
12 19±2
13 17±2
14 15±2
15 13±2
16 11±3
17 9±3
18 7±3
19 5±3
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
7 16±3
8 14±3
9 12±4
10 10±4
11 8±4
12 6±4
13 4±4
14 2±5
15 0±5
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
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Operation Instruction and Installation
3.
Main Function
GSM Function Support
•
ARM926EJ-S Core
•
S20 Pin TA
•
No Java
•
Dual Band
•
•40
Non Camera
•
Phonebook
•
FM Radio Support
•
(900/1800
Poly Ringtone(Midi, AMR, MP3)
500
MHz)
entry
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10.
Reference data
Reference Abbreviate
ADC :
―
AMPS :
―
― BGA :
― BPF :
― CDMA :
DL :
―
FTP :
―
GPS :
―
― MMS :
PBA :
―
PCS :
―
PIM(S) :
―
QPSK :
―
RF :
―
RSS :
―
SAW :
―
SMS :
―
TCXO :
―
TSP :
―
UL :
―
USB :
―
Analog to Digital Converter
Advanced Mobile Phone System(analog IS-95)
Global Positioning System
Radio Frequency
Uplink
Ball Grid Array
Band Pass Filter
Code Division Multiple Access
Downlink
File Transfer Protocol
Multimedia Messaging Service
Panel Board Assembly
Personal Communication System
Personal Information Management(System)
Quadrature Phase Shift Keying
Received Signal Strength
Surface Acoustic Wave
Short Message Service
Temperature Compensated Crystal Oscillator
Touch Screen Panel
Universal Serial Bus
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Safety Precautions
1.
Repair Precaution
1-1.
Repair in Shield Box, during detailed tuning.
―
Take specially care of tuning or test, because the specification of cellular phone is sensitive for
surrounding interference(RF noise).
Be careful to useakind of magnetic object or tool, because performance of parts is damaged by
―
the influence of magnetic force.
Surely useastandard screwdriver when you disassemble this product, otherwise screw will be
―
worn away.
Useathicken twisted wire when you measure level.
―
thicken twisted wire has low resistance, therefore error of measurement is few.
A
Repair after separate Test Pack and Set because for short danger(for example an overcurrent
―
and furious flames of parts etc) when you repair board in condition of connecting Test Pack and
tuning on.
Take specially care of soldering, because Land of PCB is small and weak in heat.
―
Surely tune on/off while using AC power plug, becausearepair of battery charger is dangerous
―
when tuning ON/OFF PBA and Connector after disassembling charger.
Don't use as you pleases after change other material than replacement registered on SEC System.
―
Otherwise engineer in charge isn't charged with problem that you don't keep this rules.
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