Samsung SCH-470 User manual

CONTENTS
1.GeneralIntroduction
2.Specification
3.NAMProgramming
4.DataTransfer
5.CircuitDescription
6.ExplodedViewandItsPartsList
7.PCBDiagrams
8.Troubleshooting
9.TestCommandTable
10. Block&CircuitDiagrams
CDMA Portable Cellular Telephone
SERVICE
Manual
SCH-470
CDMA Portable
Cellular Telephone

£àSamsung Electronics Co.,Ltd. APR. 1998.
Printed in Korea
Code No. : GH68-60687A

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1. General Introduction
The SCH-470 cellular phone functions as only digital cellular phone working in CDMA (Code Division
Multiple Access) mode. CDMA type digital mode applies DSSS (Direct Sequential Spread spectrum) mode
which first came to be used in the military.
The DSSS reduces channel cross talk and allow to use one frequency channel by multiple users in the same
specific area, resulting in increase of channel capacity to about ten times compared to that of analog mode
currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF Power Control technologies are combined into this
phone to reduce the call drop while usage.
CDMA digital cellular network consists of MSO (Mobile Switching Office), BSC (Base Station Controller),
BTS (Base Station Transmission System), and MS (Mobile Station). MS meets the specifications of the below:
¶UIS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum
Cellular System
¶UIS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems
¶UIS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
¶UIS-126 : Mobile Station Loopback Service Options Standard
SCH-470 is composed of main handset, rapid charger, cradle, two batteries.

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General Introduction
1.1 General
¶UFrequency Range
Transmitter : 824.64 ~ 848.37 MHz
Receiver : 869.64 ~ 893.37 MHz
¶UChannel Spacing : 1.23 MHz
¶UNumber of Channels : 20 FA
¶UDuplex Spacing : 45 MHz
°‹MSC Transmitter Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 824.640MHz 11 404 837.120MHz
2 29 825.870MHz 12 445 838.350MHz
3 70 827.100MHz 13 486 839.580MHz
4 111 828.330MHz 14 527 840.810MHz
5 152 829.560MHz 15 568 842.040MHz
6 193 830.790MHz 16 609 843.270MHz
7 234 832.020MHz 17 650 844.270MHz
8 275 833.250MHz 18 697 845.910MHz
9 316 834.480MHz 19 738 847.140MHz
10 363 835.890MHz 20 779 848.370MHz
°‹MSC Receiver Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 869.640MHz 11 404 882.120MHz
2 29 870.870MHz 12 445 883.350MHz
3 70 872.100MHz 13 486 884.580MHz
4 111 873.330MHz 14 527 885.810MHz
5 152 874.560MHz 15 568 887.040MHz
6 193 875.790MHz 16 609 888.270MHz
7 234 877.020MHz 17 650 889.270MHz
8 275 878.250MHz 18 697 890.910MHz
9 316 879.480MHz 19 738 892.140MHz
10 363 880.890MHz 20 779 893.370MHz

2. Specification
Frequency Range Transmitter : 824.64 MHz ~ 848.37MHz
Frequency Range Receiver : 869.64 MHz ~ 893.37 MHz
Waveform Quality : above 0.944
Time Reference : within °æ 1uS
RX Sensitivity : £≠104 dBm, FER = within 0.5%
Dynamic Range : £≠104 dBm ~ £≠25 dBm, FER = within 0.5%
TX Output Power : Maximum 320 mW (25dBm)
TX Frequency Deviation : within °æ 300 Hz
Occupied Band Width : 1.32 MHz
TX Conducted Spurious Emissions : 900 kHz below £≠42 dBc / 30 kHz
: 1.98 MHz below £≠54 dBc / 30 kHz
Minimum TX Power Control : below £≠50 dBm
Open Loop Power Control : £≠25 dBm : £≠57.0 dBm ~ £≠38.5 dBm
£≠65 dBm : £≠17.5 dBm ~
£´1.5 dBm
£≠104 dBm : £´18.0 dBm ~ £´30.0 dBm
Standby Output Power : below £≠61 dBm
Closed Loop TX Power Control Range : Test 1 beyond °æ 24 dB
Test 2 0 mS ~ 2.5 mS
Test 3 beyond °æ 24 dB
Test 4 beyond °æ 24 dB
Test 5 beyond °æ 24 dB
Size (mm) : 114 °ø50 °ø22 (Standard battery)
114 °ø50 °ø27 (Extended-life battery)
Weight (g) : 114 (Standard battery)
154 (Extended-life battery)
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