Samsung SCH-A101 User manual

SERVICE

CDMA Cellular Phone

SCH-A101

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

OK/

. ´

©Samsung Electronics Co.,Ltd. March. 2000

Printed in Korea.

Code No.: GH68-01017A

BASIC.

ELECTRONICS

1. General Description

The SCH-A101 cellular phone functions as 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 Systems

•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

Transmitter : 824 ~ 849 MHz

Receiver : 869 ~ 894 MHz

Channel Spacing : 1.23 MHz

Number of Channels : 20 EA

Duplex Spacing : 45 MHz

Frequency Stability : ±2.5 ppm (-30˚C ~ +60˚C, -4˚F ~ +140˚F)

Operating Temperature : -20˚C~+60˚C (-4˚F ~ +140˚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 23 87

Including standard battery 80 x 42 x 25 114

Item Standby Time Talk Time

Slim battery up to 90 hours up to 150 min

Standard battery up to 180 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

SAMSUNG Proprietary-Contents may change without notice

2-3

Specification

2-3 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

64 Sxxxx

TEx

T-xx Dxxx -xx

CHxxxxPxxx

REx xx x

T-xx Dxxx -xx

CHxxx

Pxxx

SIx x

91011

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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 BTIA10AD BTSA10AD

SEC Code GH43-00179A GH43-00180A

Charging Time 4 hours 4 hours

STANDARD

BATTERY

SLIM

BATTERY

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3-3

Installation

3-3 For Mobile Mount

3-3-1 Cradle

1. Choose a location where it is easy to reach and does not interfere with the driver’s safe operation of the car.

2. Separate the two halves of the clamshell by removing the two large slotted screws. See the figure 3-2.

3. Drill holes and mount the lower half of the clamshell by using the screws.

4. Place the cradle onto the remaining half of the clamshell and assemble them by using the screws.

5. Reassemble the two halves of the clamshell together. Adjust the mounting angle and tighten the two slotted

screws.

Figure 3-2 Cradle Installation

3-3-2 Hands-Free Box

1. Drill holes in a proper location for the hands-free box, attach the mounting bracket by using the screws. See

the figure 3-3.

2. Install the hands-free box into the bracket.

SAMSUNG Proprietary-Contents may change without notice

3-4

Installation

3-3-3 Hands-Free Microphone

1. It is recommended to install the microphone where it is 30-45 cm (12-18inch away from the driver. Choose

the location where is least susceptible to interference caused by external noise sources, ie, adjacent windows,

radio speakers, etc. Normal place is the sun visor.

2. Once the microphone has been correctly positioned, connect the microphone wire to the MIC jack on the

hands-free box.

Figure 3-3 Hands-Free Box 1 Installation

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