Samsung SCH-A105 Bedienungsanleitung
SERVICE
CDMA Cellular Phone
SCH-A105
Manual
CDMA Cellular Phone CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Product Support Tools
6. Troubleshooting
7. Exploded view and its Part List
8. Electrical Parts List
9. Block diagram
10. PCB diagrams
11. Circuit diagrams
MENU
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©Samsung Electronics Co.,Ltd. July. 2000
Printed in Korea.
Code No.: GH68-01246A
BASIC.
ELECTRONICS
1. General Description
The SCH-A105 cellular phone functions as both analog cellular phone working in AMPS (Advanced Mobile
Phone Service) mode and 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:
•IS-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 System
•IS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
•IS-126 : Mobile Station Loopback Service Options Standard
SAMSUNG Proprietary-Contents may change without notice
1-1
SAMSUNG Proprietary-Contents may change without notice
2-1
2. Specification
2-1 General
Frequency Range Digital Mode Analog Mode
Transmitter : 824.64 ~ 848.37 MHz 824 ~ 849 MHz
Receiver : 869.64 ~ 894.37 MHz 869 ~ 894 MHz
Channel Spacing : 1.23 MHz 30 kHz
Number of Channels : 20 EA 832 CHs
Duplex Spacing : 45 MHz 45 MHz
Frequency Stability : ±2.5 ppm (-20˚C ~ +50˚C, -4˚F ~ +122˚F)
Operating Temperature : -20˚C~+50˚C (-4˚F ~ +122˚F)
Operating Voltage
HHP : 3.6V DC (±10%)
Hands-free : 13.7V DC (±10%)
Operating Time
(Digital Mode)
Item Size (mm) Weight (g)
Including slim battery 80 x 42 x 22 93
Including standard battery 80 x 42 x 24 116
Item Standby Time Talk Time
Slim battery up to 100 hours up to 150 min
Standard battery up to 170 hours up to 250 min
SAMSUNG Proprietary-Contents may change without notice
2-2
Specification
2-2 Digital Mode
Waveform Quality 0.944 or more
Time Reference ±1uS or less
Rx Sensitivity and Dynamic Range -104 dBm, FER=0.5 % or less
-25 dBm, FER=0.5 % or less
Tx Output Power 280 mW (24.5 dBm)
Tx Frequency Deviation ±300 Hz or less
Occupied Band Width 1.32 MHz
Tx Conducted Spurious Emission 900 kHz : -42 dBc / 30 kHz below
1.98 MHz: -54 dBc / 30 kHz below
Minimum Tx Power Control below -50 dBm
-25 dBm: -57.0 dBm ~ -38.5 dBm
Open Loop Power Control -65 dBm: -17.5 dBm ~ + 1.5 dBm
-104 dBm: +18.0 dBm ~ +30.0 dBm
Standby Output Power below -61 dBm
Test1: ±24 dB or less
Test2: 0 mS ~ 2.5 mS
Closed Loop Tx Power Control Range Test3: ±24 dB or more
Test4: ±24 dB or more
Test5: ±24 dB or more
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2-3
Specification
2-3 ANALOG MODE
TRANSMITTER
RF output power
Carrier ON/OFF conditions
“ON” Condition
“OFF” Condition
Compressor
Compression Rate
Attack Time
Recovery Time
Reference Input
Preamphasis
Maximum Freqency Deviation
F3 of G3
Supervisory Audio Tone
Signaling Tone
Wideband Data
Post Deviation Limiter Filter
3.0 ~ 5.9KHz
5.9 ~ 6.1KHz
6.1 ~ 15KHz
Over 15KHz
Spectrum Noise Suppression
For all modulation
f0+20KHz ~ f0+45KHz
For modulation by voice and SAT
f0 +45KHz
For modulation by WBD(without SAT)
and ST (with SAT)
f0+45KHz ~ f0+60KHz
f0+60KHz ~ f0+90KHz
f0+90KHz ~ 2f0
Harmonic and conducted Spurious Emissions
0.6W (+2/-4dB)
within ±3dB of specification output (in 2mS)
below-60dBm (in 2mS)
2:1
3mS
13.5mS
Input level for producing a nominal ±2.9KHz
peak freqency deviation of transmitted carrier
6dB/OCT within 0.3 ~ 3KHz
±12KHz
±2KHz (±10%)
±8KHz (±10%)
±8KHz (±10%)
above 40 LOG (F/3000) dB
above 35 dB
above 40 LOG (F/3000) dB
above 28 dB
above 26 dB
above 63 +10 LOG (PY) dB
above 45 dB
above 65 dB
above 63 +10 LOG (PY) dB
(where f0=carrier frequency
PY=mean output power in watts)
below 43 + 10 LOG (PY) dB
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2-4
Specification
RECEIVER
De-Emphasis
Expander
Expander Rate
Attack Time
Recovery Time
Reference Input
Sensitivity
Intermodulation Spurious Response Attenuation
RSSI Range
Protection Against Spurious Response
Interference
In Band Conducted Spurious Emission
Transmit Band
Receive Band
Other Band
Radiated Spurious Emission
Frequency Range
25 ~ 70 MHz
70 ~ 130MHz
130 ~ 174 MHz
174 ~ 260 MHz
260 ~ 470 MHz
470 ~ 1GHz
-6dB / OCT within 0.3 ~3KHz
1:2
within 3mS
within 13.5mS
output level to a 1000Hz tone from a carrier
within ±2.9KHz peak frequency deviation
12dB SINAD / -116dBm
avove 65dB
above 60dB
above 60dB
below -60dBm
below -80dBm
below -47dBm
Maximum Allowable EIRP
-45dBm
-41dBm
-41 ~ -32dBm
-32dBm
-32 ~ -26dBm
-21dBm
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2-5
Specification
2-4 CDMA Debug Display Information (menu 8)
IN IDLE MODE
IN CONVERSATION MODE
1 : Sxxxxx : SID (System ldentification) toggle
Nxxxxx : NID (Network Identification) toggle
2 : SIx : Slot cycle index (lowest between the system and the phone will be used)
3 : Handset Status : 0 - Acquisition
1 - Synchronization
2 - Paging (Idle)
3 - Traffic Initialization
4 - Traffic Mode
5 - Exit
4 : T-xx : Tx adjust, Value ranges from +63 ~ -63dB
5 : Dxxx : sector power in dBm
6 : -xx : Ec/Io
7 : Pxxx : PN offset
8 : CHxxxx : channel number
9 : TEx : Tx vocoder rate (8 is full rate, 1 is 1/8th rate)
E : EVRC
V : 13k or 8k
10 : REx : Rx vocoder rate (8 is full rate, 1 is 1/8th rate)
11 : xx : Walsh code used in traffic channel
12
5
3
64 Sxxxx
TEx
T-xx Dxxx -xx
CHxxxxPxxx
REx xx x
T-xx Dxxx -xx
CHxxx
Pxxx
SIx x
7
8
91011
3
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3-1
3. Installation
3-1 Installing a Battery Pack
Push up and hold the catch above the battery on the back of
the phone (➀) and lift the battery away. (➁ ~ ➂)
Insert the saw-toothed end on the bottom of the battery into the slots
on the bottom of the phone (➀), then slide the battery down (➁).
➀➁➂
➁➀
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3-2
Installation
3-2 For Desk Top Use
1. Choose a proper location to install the charger for Desk Top use.
2. Plug the power cord of the charger into an appropriate wall socket. When the power is connected correctly,
the lamps turn on briefly.
3. To charge the battery pack, insert the battery pack into the rear slot of the charger. The lamp marked BAT on
the front panel of the charger lights up red.
4. If you do not wish to use the phone while charging the battery, insert the phone with the battery pack
attached into the front slot of the charger. The lamp marked PHONE on the front panel of the charger lights
up red.
Figure 3-1 Charging the Phone and Battery
SPECIFICATIONS USING “DTCA10”
Battery Type Slim Battery Standard Battery
(Li-ion, 500 mAh) (Li-ion, 1000 mAh)
Model Name BTIA10AA BTSA10AA
BTIA10AD BTSA10AD
SEC Code GH43-00173B GH43-00174B
GH43-00179B GH43-00180B
Charging Time 4 hours 4 hours
STANDARD
BATTERY
SLIM
BATTERY
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