Page 1
Specification
2.
2-1.
GSM General Specification
GSM 850 EGSM 900 DCS1800 PCS1900
Freq. Band[MHz]
Uplink/Downlink
ARFCN range 128~25
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame
Period
824~849
869~894
270.833kbps
3.692us
576.9us
4.615ms
880~915
925~960
0~124 &
975~1023
270.833kbps
3.692us
576.9us
4.615ms
1710~1785
1805~1880
512~885 512~810
270.833kbps
3.692us
576.9us
4.615ms
1850~1910
1930~1990
270.833kbps
4.615ms
3.692us
576.9us
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km 2Km
max
(
4
+33
dBm)
max
(
4
+33
dBm)
max
(
1
+30
dBm)
max
(
1
+30
dBm)
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Page 2
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
GSM850
GSM900
dBm
dBm
dBm
dBm
dBm
dBm
dBm
TX Power
control level
030±3
128±3
226±3
324±3
422±3
520±3
618±3
DCS1800
dBm
dBm
dBm
dBm
dBm
dBm
dBm
TX Power
control level
030±3
128±3
226±3
324±3
422±3
520±3
618±3
PCS1900
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
716±3
814±3
912±4
10 10±4
11 8±4
12 6±4
13 4±4
14 2±5
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
716±3
814±3
912±4
10 10±4
11 8±4
12 6±4
13 4±4
14 2±5
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
15 0±5
2-2
dBm
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15 0±5
dBm
Page 3
Product Function
3.
Main Function
EDGE Capability
-
Mega pixel Camera
-2
- 2.2”, 262K
USB v2.0(Full Speed), BT v2.0
-
Music Library, MP3/AAC/AAC+/AAC+e/AMR
-
External Memory Support(microSD)
-
Camera and camcorder
-
SMS/MMS/E-Mail
-
Phonebook
-
Voice recorder
-
QCIF TFT LCD
(2.5
G)
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Page 4
10.
Reference data
Reference Abbreviate
ARFCN :
―
BER :
―
BPSK:
―
EN
―
ES
―
ETSI:
―
PN :
―
PS :
―
QPSK:
―
RS :
―
SI :
―
TDM :
―
TS
―
Absolute Radio Frequency Channel Number
Bit Error Rate
Binary Phase Shift Keying
European Standard
:
Elementary Stream
:
European Telecommunications Standards Institute
Pseudo-random Noise
Pilot Symbol
Quadrature Phase Shift Keying
Reed-Solomon
Service Information
Time Division Multiplexing
Transport Stream
:
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Page 5
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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Page 6
Safety Precautions
ESD(Electrostatically Sensitive Devices) Precaution
1-2.
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 oracircuit board.
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