Samsung SCH-2500 series Bedienungsanleitung

SERVICE

PORTABLE CELLULAR

TELEPHONE

SCH-2500 Series

SAMSUNG Proprietary - Contents may change without notice

Manual

PORTABLE CELLULAR TELEPHONE CONTENTS

1. General Introduction

2. Specification

3. Installation

4. Nam Programming

5. Circuit Description

6. Trouble shooting

7. Exploded Views and its Parts List

8. Electrical Parts List

9. PCB Diagrams

10. Block Diagrams

11. Circuit Diagram

Samsung Electronics Co.,Ltd.

GH68-00621A

1999. 9. Rev. 1.0

1. General Introduction

The SCH-25XX DBTM phone functions as analog phone working in AMPS (Advanced Mobile Phone Service)

mode, digital cellular phone working in CDMA (Code Division Multiple Access) mode, and digital phone

working in PCS (Personal Communication Service) mode.

The following standards and minimum performance standards shall be met or exceeded by each subscriber

unit.

Air Interface

The Subscriber Unit shall be Triple mode and Dual band in compliance with ANSI J-STD-008 and TIA/EIA IS-

98A.

MS(Mobile Station) meets the specifications of the below;

ANSl J-STD-008 : Personal Station-base Station Compatibility Requirements for 1.8 to 2.0 GHz CDMA

PCS.

ANSl J-STD-018 : Recommended Minimum Performance Requirements for 1.8 to 2.0 GHz CDMA Personal

Stations.

CDG Ref. Document #27 : High Rate Speech Service Option for Wideband Spread Spectrum Systems.

TlA/ElA lS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread

Spectrum Cellular System.

IS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread-Spectrum Cellular Syatems.

IS-98A : Standard for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station.

IS-126 : Mobile Station Loopback Service Options Standard.

SCH-25XX is composed of main handset, rapid charger, cradle, two batteries (1000 mAh, 1600 mAh), hand-

free kit, and travel charger. Hands-free Kit is designed to be operated in full-duplex mode taking turn-around

delay between the phone and the system into account.

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1-2 SAMSUNG Proprietary - Contents may change without notice

General Introduction

Memo

2. SPECIFICATION

2-1. General

ITEM PCS CDMA AMPS

Tx Freq. range 1850 ~ 1910MHz 824 ~ 849MHz 824~849MHz

Rx Freq. range 1930 ~1990MHz 869 ~894MHz 869 ~894MHz

Channel Bandwidth 1.23 MHz 1.23 MHz 30 KHz

Channel Spacing 50 KHz 30 KHz 30 KHz

Number of Channel 1200 20FA 832

Duplex Separation 80 MHz 45 MHz 45 MHz

Type of Emission 1M25F9W 40K0F8W,40K0F1D 40K0F8W,40K0F1D

In/Output Impedance 50Ω50Ω50Ω

Tx Intermediate Freq. 130.38MHz 130.38MHz 130.38MHz

Rx Intermediate Freq. 210.38MHz 85.38MHz 85.38MHz

Tx Local Freq. lst(FTX-130.38MHz) lst(FTX+130.38MHz) lst(FTX+130.38MHz)

2nd(260.76MHz) 2nd(260.76MHz) 2nd(260.76MHz)

Rx Local Freq lst(FRX-210.38MHz) lst(FRX+85.38MHz) lst(FRX+85.38MHz)

2nd(420.76MHz) 2nd(170.76MHz) 2nd(170.76MHz)

TCXO freq 19.68MHz 19.68MHz 19.68MHz

Freq. Stability (FRX-80MHz)±150Hz (FRX-45MHz)±300Hz ±2.5ppm

Operating Temperature -30 oC~ +60 oC-30 oC~ +60 oC-30 oC~ +60 oC

Supply Voltage +3.6V

Size and Weight STD : 122cm X 50cm X 26cm, 161 g, 1000 mA

MID : 122cm X 50cm X 30cm, 179 g, 1600 mA

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2-2 SAMSUNG Proprietary - Contents may change without notice

2-2. 1.9GHz CDMA(US PCS)

1) General

Frequency Range

.Transmitter : 1850-1910MHz

.Receiver : 1930-1990MHz

Channel Bandwidth : 1.23MHz

Channel Spacing : 50kHz

Number of Channels : 1200

Duplex Seperation : 80MHz

Type of Emission : 1M25F9W

Input/Output impedance : 50 Ω

Intermediate Frequency

.Transmitter : 130.38MHz

.Receiver : 210.38MHz

Local Frequency

.Transmitter : lst(FTX-130.38), 2nd(260.76MHz),

.Receiver : lst(FRX-210.38MHz), 2nd(420.76MHz),

TCXO Frequency : 19.68MHz

Frequlency Stability : (FTX-80MHz)±150Hz

Operation Temperature : -30 oC~ 60 oC

Supply Voltage : +3.6V

2) Transmitter

Waveform Quality : 0.944 or more

Open Loop Power Conterol Range

. -25dBm : -60.5dBm ~ -41.5dBm

. -65dBm : -20.5dBm ~ +1.5dBm

. -104dBm : +15.0dBm ~ +30dBm

Minimum Tx Power control : below -50dBm

Closed Loop Power Control Range : ±24dB

Maximum RF Output Power : 200mW(+23dBm)

Occupied Bandwidth : 1.23MHz

Conducted Spurious Emission @ 1.25MHz : -42dBc/30kHz

Specification

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Specification

3) Receiver

Rx Sensitivity and Dynamic Range : -104dBm, FER=0.5% or less

: -25dBm, FER=0.5% or less

Conducted Spurious Emission

. 1930 ~ 1990MHz : <-81dBm

. 1850 ~ 1910MHz : <-61dBm

. All Other Frequencies : <-47dBm

Single Tone Desensitization : lower than 1%

Rx power = -101dBm

Tone power = -30dBm

Tone offset from carrier = ±1.25MHz

Intermodulation Spurious Response Attenuation : lower than 1%

Rx power = -101dBm

Tone 1 power = -43dBm

Tone 2 power = -43dBm

Tone 1 : offset from carrier = ± 1.25MHz

Tone 2 : offset from carrier = ± 2.05MHz

Specification

2-3 800MHz CDMA

1) General

Frequency Range

.Transmitter : 824 ~849MHz

.Receiver : 869 ~894MHz

Channel Bandwidth : 1.23MHz

Channel Spacing : 30kHz

Number of Channels : 20FA

Duplex Seperation : 45 MHz

Type of Emission : 40KOF8W, 40KOF1D

Input/Output Impedance : 50Ω

Intermediate Frequency

.Transmitter : 130.38MHz

.Receiver : 85.38MHz

Local Frequency

.Transmitter : lst(FTX-130.38MHz),2nd(260.76MHz)

.Receiver : lst(FTX-85.38MHz),2nd(170.76MHz)

TCXO Frequency : 19.68MHz

Frequency Stability : (FTX-45MHz)±300Hz

Operation Temperature : -30 oC~ 60 oC

Supply Voltage : +3.6V

2) Transmitter

Waveform Quality : 0.944 or more

Open Loop power Control Range

. -25dBm : -57.5dBm ~ -38.5dBm

. -65dBm : -17.5dBm ~ +1.5dBm

. -104dBm : +18.0dBm ~ +30dBm

Minimum Tx Power Control : below -50dBm

Closed Loop Power Control Range : ±24dB

Maximum RF Output Power : 200mW(+23dBm)

Occupied Bandwidth : 1.23MHz

Conducted Spurious Emission @900 KHz : -42dBc/30kHz

@1.25MHz : -54dBc/30kHz

2-4 SAMSUNG Proprietary - Contents may change without notice

Specification

3) Receiver

Rx Sensitivity and Dynamic Range : -104dBm, FER=0.5% or less

: -25dBm, FER=0.5% or less

Conducted Spurious Emission

.869 ~ 894 MHz : <-81dBm

.824 ~ 849 MHz : <-61dBm

.A11 Other Frequencies : <-47dBm

Single Tone Desenstization :lower than 1%

Rx power level = -101dBm

Tone power level = -30dBm

Tone offset from carrier = ± 900kHz

Intermodulation Spurious Response Attenuation : lower than 1%

Rx power = -101dBm

Tone 1 power = -43dBm

Tone 2 power = -43dBm

Tone 1 offset from carrier = ± 900kHz

Tone 2 offset from carrier = ± 1,700kHz

2-5

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Specification

2-6 SAMSUNG Proprietary - Contents may change without notice

2-4 800MHZ CELLULAR(AMPS)

1) General

Frequency Range

.Transmitter : 824 ~ 849MHz

.Receiver : 869 ~ 894MHz

Channel Spacing : 30kHz

Number of Channels : 832

Duplex Seperation : 45MHz

Frequency Stability : ±2.5ppm(-30 oC~ 60 oC, -22°F ~ 140°F)

Modulation/Demodulation

.Voice : PM

.Data : FM

Operating Temperature : -30oC~ 60oC, -22°F ~ 140°F

Supply Voltate : +3.6V

2) Transmitter

RF output power : 0.6W(+2/-4dB)

Carrier ON/OFF conditions

“ON” Condition : within ±3dB of specification output (in 2 ms)

“OFF” Condition : below -60dBm (in 2 ms)

Compresssor

Compression Rate : 2 : 1

Attack Time : 3ms

Recovery Time : 13.5ms

Reference Input : input power level for producing a nominal ±2.9kHz

: peak frequency deviation of transmitted carrier

Preamphasis : 6dB/oct within 0.3 ~ 3kHz

Maximum Frequency Deviation

F3 of G3 : ±12kHz

Supervisory Audio Tone : ± 2kHz(±10%)

Signling Tone : ± 8kHz(±10%)

Wideband Data : ± 8kHz(±10%)

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