Samsung SCH-8500 service manual.pdf

ELECTRONIC

DUAL BAND(PCS+AMPS)

PORTABLE TELEPHONE

SCH-8500

SERVICE

Manual

DUAL MODE TELEPHONE

CONTENTS

1. Specification

2. Nam Programming

3. Test Commands & Test Procedure List

4. Test Procedure

5. Exploded View & its Parts List

6. Electrical Parts List

7. Block Diagram

8. PCB Diagram

9. Schematic Diagrams

ELECTRONICS

Samsung Electronics Co.,Ltd. Dec. 99

Pinted in Korea.

Code No.: GH68-00949A

1. Specification

1-1 General

ITEM

CDMA

AMPS

Tx Freq. range

1850 ~ 1910MHz

824 ~ 849MHz

Rx Freq. range

1930 ~ 1990MHz

869 ~ 894MHz

Channel Bandwidth

1.23MHz

30KHz

Channel Spacing

50KHz

30KHz

Number of Channel

1200

832

Duplex Separation

80MHz

45MHz

Type of Emission

1M25F9W

40K0F8W,40K0F1D

In/Output Impedance

Tx Intermediate Freq.

130.38MHz

Rx Intermediate Freq.

210.38MHz

85.38MHz

Tx Local Freq.

1st (FTX-130.38MHz)

2nd (260.76MHz)

1st (FTX+130.38MHz)

2nd (260.76MHz)

Rx Local Freq

1st (420.76MHz)

2nd (FRX-210.38MHz)

1st (170.76MHz)

2nd (FRX+85.38MHz)

TCXO freq.

19.68MHz

Freq. Stability

(FRX-80MHz) ± 150Hz

± 2.5ppm

Operating Temperature

-30°C ~ +60°C

Supply Voltage

3.6V

Size and Weight

Slim : 88mm X 50mm X 23.5mm, 105 g, 500 mA

STD : 88mm X 50mm X 25.7mm, 135 g, 1000 mA

EXT : 88mm X 50mm X 27.5mm, 151 g, 1600 mA

1-1

Samsung Electronics

1-2. 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 : 80 MHz

Type of Emission : 1M25F9W

Input/Output Impedance : 50

Intermediate Frequency

• Transmitter : 130.38MHz

• Receiver : 210.38MHz

Local Frequency

• Transmitter : 1st(FTX-130.38), 2nd(260.76MHz),

• Receiver : 1st(FRX-210.38MHz), 2nd(420.76MHz),

TCXO Frequency : 19.68MHz

Frequency Stability : (FRX-80MHz) ± 150Hz

Operation Temperature : -30°C ~ 60°C

Supply Voltage : +3.6V

2) Transmitter

Waveform Quality :0.944 or more

Open Loop Power Control 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 @1.25 MHz: -42dBc/30kHz

1-2

Samsung Electronics

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 = ± 1.25 MHz

Intermodulation Spurious Response Attenuation : lower than 1 %

Rx power = -101dBm

Tone 1 power = -43dBm

Tone 2 power = -43dBm

Tone 1 : offset from carrier = ± 1.25 MHz

Tone 2 : offset from carrier = ± 2.05 MHz

Samsung Electronics

1-3

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: