Samsung SCH-A310 Series User manual

SERVICE
PORTABLE CELLULAR
TELEPHONE
SCH-A310
Manual
PORTABLE CELLULAR TELEPHONE CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Product Support Tools
6. Circuit Description
7. Test Procedure
8. Trouble Shooting
9. Exploded Views and Parts List
10. Block Diagram
11. Electrical Parts List
12. PCB Diagrams
13. Circuit Diagrams

©Samsung Electronics Co.,Ltd. August. 2002
Pinted in Korea.
Code No.: GH68-03090A
BASIC.
ELECTRONICS

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1-1
1. General Introduction
The SCH-A310 DBDM(Dual Band Dual Mode) phone functions as both analog phone working in AMPS
(Advanced Mobile Phone Service) mode and digital phone working in PCS (Personal Communication Service)
and GPS modes.
The following standards and minimum performance standards shall be met or exceeded by each subscriber
unit.
Air Interface
The Subscriber Unit shall be Dual mode and Dual band in compliance with ANSI J-STD-008 and TIA/EIA IS-
95A(Analog).
ANSI J-STD-008 : Personal Station-Base Station Compatibility Requirements for 1.8 to 2.0 GHz CDMA PCS.
ANSI 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 System.
TIA/EIA IS-96A : Speech Service Option 1 Standard for Dual mode Wideband Spread Spectrum Cellular
Systems.
TIA/EIA IS-125 : Recommended Minimum Performance standards for Digital Cellular Wideband Spread
Spectrum Speech Service Option1.
TIA/EIA IS-126-A : Mobile Station Loop back Service Option standard.
TIA/EIA IS-95B : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread
Spectrum Cellular Systems;for the analog air interface.
TIA/EIA IS-98C : Recommended Minimum Performance Standard for Dual-Mode Wideband Spread PCS
Cellular Systems. Both Analog and CDMA sections apply.
TIA/EIA IS-801-1 : Position Determination Service standards for Dual Mode Spread Spectrum System.
CDMA Receiver/Transmitter Specifications and Requirements
The Subscriber Unit shall comply with ANSI J-STD-008 and meet or exceed TIA/EIA IS-98C. The Subscriber
Unit shall comply with Personal Station Class II.
Analog Receiver/Transmitter Specifications and Requirements
The Subscriber Unit shall comply with TIA/EIA IS-95B and meet or exceed TIA/EIA IS-95. The Subscriber Unit
shall comply with Mobile Station Power Class III (600 mW).

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2-1
2. Specification
2-1 General
Item US PCS CDMA AMPS GPS
Tx Freq. range 1851.25~1908.75MHz 824.70~848.31MHz 824.04~848.97MHz -
Rx Freq. range 1931.25~1988.75MHz 869.70~893.31MHz 869.04~893.97MHz 1574~1576MHz
Channel Bandwidth 1.23MHz 1.23MHz 30KHz
Channel Spacing 50KHz 30KHz 30KHz -
Number of Channel 1200 20FA 832 -
Duplex Separation 80MHz 45MHz 45MHz -
Type of Emission 1M25F9W 1M25F9W 40K0F8W, 40K0F1D -
In/Output Impdance 50Ω50Ω50Ω-
Tx Intermediate
Frequency 263.6MHz 228.6MHz 228.6MHz -
Rx Intermediate
Frequency 183.6MHz 183.6MHz 183.6MHz -
1st(FTX+263.6MHz) 1st(FTX+228.6MHz) 1st(FTX+228.6MHz)
Tx Local Frequency 2nd(527.2MHz) 2nd(457.2MHz) 2nd(457.2MHz) -
1st(FRX+183.6MHz) 1st(FRX+183.6MHz) 1st(FRX+183.6MHz)
Rx Local Frequency 2nd(367.2MHz) 2nd(367.2MHz) 2nd(367.2MHz) -
TCXO Frequency 19.2MHz 19.68MHz 19.68MHz -
Freq. Stabillity (FRX - 80 MHz) ± 150 Hz (FRX - 45 MHz) ± 300Hz ± 2.5ppm -
Operating
Temperature -30 oC ~ +60 oC -30 oC ~ +60 oC -30 oC ~ +60 oC-
Supply Voltage 3.80V
Size and Weight STD : 113 * 47 * 22mm, 900mAh

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2-2
Specification
2-2 1.9GHz CDMA(US PCS)
GENERAL
Frequency Range
. Transmitter : 1851.25 ~ 1908.75MHz
. Receiver : 1931.25 ~ 1988.75MHz
Channel Bandwidth : 1.23MHz
Channel Spacing : 50kHz
Number of Channels : 1200
Duplex Seperation : 80 MHz
Type of Emission : 1M25F9W
Input/Output Impedance : 50 ohms
Intermediate Freequency
. Transmitter : 263.6MHz
. Receiver : 183.6MHz
Local Frequency
. Transmitter : 1st(FTX +263.6MHz), 2nd(527.2MHz)
. Receiver : 1st(FRX +183.6MHz), 2nd(367.2MHz)
TCXO Frequency : 19.2MHz
Frequency Stability : (FRX-80MHz) +/- 150Hz
Operation Temperature : -30deg ±60deg
Supply Voltage : +3.8V

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2-3
Specification
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 ~ +25.5dBm
Minimum Tx Power Control : below -50dBm
Closed Loop Power Control Range : +/-24dB
Maximum RF Output Power : 25.5dBm
Occupied Bandwidth : 1.23MHz
Conducted Spurious Emission @1.25 MHz : -42dBc/30kHz
RECEIVER
Rx Sensitivity and Dynamic Range : -104dBm, FER=0.5% or less
: -25dBm, FER=0.5% or less
Conducted Spurious Emission
. 1930~1990 MHz : <-81dBm
. 1850~1910 MHz : <-61dBm
. All Other Frequencies : <-47dBm
Single Tone Desensitization : lower than 1 %
. Rx power level = -101dBm
. Tone power level = -30dBm
. Tone offset from carrier = +/-1.25 MHz
Intermodulation Spurious Response Attenuation : lower than 1 %
. Rx power = -101dBm
. Tone 1 power = -43dBm
. Tone 1 power = -43dBm
. Tone 1 offset from carrier = +/-1.25 MHz
. Tone 2 offset from carrier = +/-2.05 MHz

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2-4
Specification
2-3 800MHz CDMA
GENERAL
Frequency Range
. Transmitter : 824.70 ~ 848.31MHz
. Receiver : 869.70 ~ 893.31MHz
Channel Bandwidth : 1.23MHz
Channel Spacing : 30kHz
Number of Channels : 20FA
Duplex Seperation : 45 MHz
Type of Emission : 1M25F9W
Input/Output Impedance : 50 ohms
Intermediate Freequency
. Transmitter : 228.6MHz
. Receiver : 183.6MHz
Local Frequency
. Transmitter : 1st(FTX +228.6MHz), 2nd(457.2MHz)
. Receiver : 1st(FRX +183.6MHz), 2nd(367.2MHz)
TCXO Frequency : 19.2MHz
Frequency Stability : (FRX-45MHz) +/- 300Hz
Operation Temperature : -30deg ~ 60deg
Supply Voltage : +3.8V
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

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2-5
Specification
Minimum Tx Power Control : below -50dBm
Closed Loop Power Control Range : +/-24dB
Maximum RF Output Power : 26dBm
Occupied Bandwidth : 1.23MHz
Conducted Spurious Emission @900 KHz : -42dBc/30kHz
@1.25 MHz : -54dBc/30kHz
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
All Other Frequencies : <-47dBm
Single Tone Desensitization : lower than 1 %
. Rx power level = -101dBm
. Tone power level = -30dBm
. Tone offset from carrier = +/-900KHz
Intermodulation Spurious Response Attenuation : lower than 1 %
. Tone 1 offset from carrier = +/-900KHz
. Tone 2 offset from carrier = +/-1.700MHz
- Test 1, 2
Rx power = -101dBm
Tone 1 power = -43dBm
Tone 2 power = -43dBm
- Test 3, 4
Rx power = -90dBm
Tone 1 power = -32dBm
Tone 2 power = -32dBm
- Test 5, 6
Rx power = -79dBm
Tone 1 power = -21dBm
Tone 2 power = -21dBm

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2-6
Specification
2-4 800MHz AMPS
GENERAL
Frequency Range
. Transmitter : 824.04°≠848.97 MHz
. Receiver : 869.04°≠893.97 MHz
Channel Spacing : 30kHz
Number of Channels : 832
Duplex Spacing : 45MHz
Frequency Stability : +/-2.5ppm(-30deg°≠60deg, -22°£F °≠140°£F)
Modulation/Demodulation
. Voice : FM
. Data : PM
Operating Temperature : -30deg°≠60deg, -22°£F °≠140°£F
Supply Voltate : 3.8V
TRANSMITTER
RF output power : 27dBm
Carrier ON/OFF conditions
. "ON" Condition : within +/-3dB of specification output(in 2 ms)
. "OFF" Condition : below -60dBm(in 2ms)
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 °≠3 kHz

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2-7
Specification
Maximum Frequency Deviation
. F3 of G3 : +/-12 kHz
. Supervisory Audio Tone : +/-2 kHz(+/-10%)
. Signaling Tone : +/-8 kHz(+/-10%)
. Wideband Data : +/-8 kHz(+/-10%)
Post Deviation Limiter Filter
. 3.0 ~ 5.9 kHz : above 40 LOG(F/3000)dB
. 5.9 ~ 6.1 kHz : above 35dB
. 6.1 ~ 15 kHz : above 40 LOG(F/3000)dB
. Over 15 kHz : above 28 dB
Spectrum Noise Suppression
. For all modulation
fo +20 kHz °≠fo + 45 kHz : above 26dB
. For modulation by voice and SAT
fo + 45 kHz : above 63dB+10LOG(PY)dB
. For modulation by WBD(without SAT) and ST(with SAT)
fo + 45 kHz ~ fo + 60 kHz : above 45 dB
fo + 60 kHz ~ fo + 90 kHz : above 65 dB
fo + 90 kHz ~ 2 fo : above 63 dB + 10 LOG(PY) dB
( where fo = carrier frequency
PY=mean output power in watts )
Harmonic and conducted Spurious Emissions : below 43 + 10 LOG(PY) dB
RECEIVER
De-emphasis : -6dB/OCT within 0.3 ~ 3 kHz
Expandor
. Expandor Rate : 1 : 2
. Attack time : within 3 ms
. Recovery Time : within 13.5 ms
. Reference input : output power level to a 1000Hz tone from a
carrier within +/-2.9 kHz peak frequency deviation
Sensitivity : 12 dB SINAD/-116dBm
Intermodulation Spurious Response Attenuation : above 65dB
RSSI Range : above 60dB
Protection Against Spurious Response Interference : above 60dB