Page 1
2. Specification
2-1. GSM General Specification
E-GSM DCS1800
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
Tx/Rx spacing 45MHz 95MHz
Mod. Bit
rate/
Bit Period
Time Slot Period/Frame
Period
Modulation GPRS 0.3GMSK 0.3GMSK
MS Power GPRS 33dBm~5dBm 30dBm~0dBm
GPRS
880~915
925~960
975~1023
0~124
270.833Kbps
3.692us
576.9us
4.615ms
1710~1785
1805~1880
512~885
270.833Kbps
3.692us
576.9us
4.615ms
Power Level GPRS 5~19(class4) 0~15(class1)
Sensitivity -102dBm -100dBm
TDMA Mux 8 8
Cell Radius 35Km 2Km
Operating Temperature -20℃~45
Supply Voltage 3.7V 3.7V
Size and Weight
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Dimention : 105(H) × 44.5(W) × 14(D) mm
Weight : 79g (with standard battery)
2-1
℃
-20℃~45
℃
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2-2. GSM Tx Power Class
Specification
TX Powe r
control level
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3 dBm
18 7±3 dBm
19 5±3 dBm
GSM900
TX Power
control level
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
DCS1800
15 0±5 dBm
2-2
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Page 3
3. Product Function
Main Function
- FM Radio & Recording
- Voice Recording
- Speaker Phone
-WAP2.0
- Java Games
-MyMenu
- Mobile Tracker
- Auto Time Setting
- SOS Message
- Black GUI
-NoSimMode
- Phonebook 500 entry
- Multiple Alarm
- Large Clock
- Auto-Off Mode
3-1
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Page 4
10. Reference data
Reference Abbreviate
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―
: Analog to Digital Converter
ADC
AMPS
BGA
BPF
CDMA
DL
FTP
GPS
MMS
PBA
PCS
PIM(S)
QPSK
RF
RSS
SAW
SMS
TCXO
TSP
UL
USB
: Advanced Mobile Phone System(analog IS-95)
: Ball Grid Array
:BandPassFilter
: Code Division Multiple Access
:Downlink
: File Transfer Protocol
: Global Positioning System
: Multimedia Messaging Service
: Panel Board Assembly
: Personal Communication System
: Personal Information Management (System)
: Quadrature Phase Shift Keying
: Radio Frequency
: Received Signal Strength
: Surface Acoustic Wave
: Short Message Service
: Temperature Compensated Crystal Oscillator
: Touch Screen Panel
: Uplink
: Universal Serial Bus
10-1
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Page 5
1. Safety Precautions
1-1. Repair Precaution
―
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 use a kind of magnetic object or tool, because performance of parts is damaged by
the influence of magnetic force.
―
Surely use a standard screwdriver when you disassemble this product, otherwise screw will be
worn away.
―
Use a thicken twisted wire when you measure level.
A thicken twisted wire has low resistance, therefore error of measurement is few.
―
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, because a repair 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.
1-1
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Page 6
Safety Precautions
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easily by static electricity. Such parts are called by ESD
(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.
You can prevent from ESD damage by static electricity.
―
Remove static electricity remained your body before you touch semiconductor or parts with
semiconductor. There are ways that you touch an earthed place or wear static electricity prevention
string on wrist.
―
Use earthed soldering steel when you connect or disconnect ESD.
―
Use soldering removing tool to break static electricity. Otherwise ESD will be damaged by static
electricity.
―
Don't unpack until you set up ESD on product. Because most of ESD are packed by box and
aluminum plate to have conductive power,they are prevented from static electricity.
―
You must maintain electric contact between ESD and place due to be set up until ESD is
connected completely to the proper place or a circuit board.
1-2
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