Samsung SCH-211 User manual

CDMA PORTABLE
CELLULAR TELEPHONE
SCH-211
SERVICE
Manual
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GHI JKL MNO
ABC DEF
PQRS
TUV
OPER
WXYZ
PWR
CLR OK
MENU
SEND END
CDMA
CDMA PORTABLE CELLULAR TELEPHONE CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Circuit Description
6. Troubleshooting
7. Exploded Views and Parts List
8. PCB Diagrams
9. Electrical Parts List
10. Block & Circuit Diagrams

Samsung Electronics Co.,Ltd.
GH68-00335A
ELECTRONICS

Samsung Electronics - Contents may change without notice.1
Specification

1. General Introduction
Samsung Electronics-Contents may change without notice. 1-1
The SCH-211 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:
¥ UIS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum
Cellular System
¥ UIS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems
¥ UIS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
¥ UIS-126 : Mobile Station Loopback Service Options Standard
SCH-211 is composed of main handset, rapid charger, cradle, two batteries (1300 mAh, 850 mAh), hands-free
kit, and travel charger. Hands-Free Kit is designed to be operated in half-duplex mode taking turn-around
delay between the phone and the system into account.

Samsung Electronics - Contents may change without notice.1-2
General Introduction
MEMO

2. Specification
Samsung Electronics-Contents may change without notice. 2-1
2-1 General
Frequency Range Digital Mode Analog Mode
Transmitter : 824.64 ~ 848.37 MHz 824.04 ~ 848.97 MHz
Receiver : 869.64 ~ 893.37 MHz 869.04 ~ 893.97 MHz
Channel Spacing : 1.23 MHz 30 kHz
Number of Channels : 20 FA 832 CHs
Duplex Spacing : 45 MHz
Frequency Stability : ± 2.5 ppm (– 30 °C ~ + 60 °C : -22 °F~ 140 °F)
Operating Temperature : – 20 °C ~ + 50 °C (–4 °F~ 122 °F)
Operating Voltage
HHP : 7.2V DC (± 10 %)
Hands-free : 13.7V DC (± 10 %)
Size and Weight
including standard battery : 130 ✕51 ✕27.5 mm, 205 g (5.12 ✕2 ✕0.94 inch, 7.2 oz)
including extended-life battery : 130 ✕51 ✕37 mm, 207 g (5.12 ✕2 ✕1.46 inch, 7.4 oz)
Operating Time
Digital mode Standby Time : about 50 ~ 55 hours (with standard battery)
: about 85 ~ 90 hours (with extended-life battery)
Talk Time : about 150 min (with standard battery)
: about 250 min (with extended-life battery)
Analog Standby Time : about 10 ~ 12 hours (with standard battery)
: about 16 ~ 18 hours (with extended-life battery)
Talk Time : about 100 min (with standard battery)
: about 170 min (with extended-life battery)
2-2 Analog Mode
TRANSMITTER
RF output power : 0.6 W (+2/–4 dB)
Carrier ON/OFF Conditions
“ON” Condition : within ± 3 dB of specification output (in 2mS)
“OFF” Condition : below – 60 dBm (in 2mS)
Compressor
Compression Rate : 2:1
Attack Time : 3 mS
Recovery Time : 13.5 mS
Reference Input : Input level for producing a nominal ± 2.9 kHz peak frequency
deviation of transmitted carrier

Samsung Electronics - Contents may change without notice.2-2
Specification
Preamphasis : 6 dB/OCT within 0.3 ~ 3 kHz
Maximum Frequency Deviation
F3 of G3 : ± 12 kHz (± 10 %)
Supervisory Audio Tone : ± 2 kHz (± 10 %)
Signaling Tone : ± 8 kHz (± 10 %)
Wideband Data : ± 8 kHz (± 10 %)
Post Deviation Limiter Filter
3.0 kHz ~ 5.9 kHz : above 40LOG (F/3000) dB
5.9 kHz ~ 6.1 kHz : above 35 dB
6.1 kHz ~ 15 kHz : above 40LOG (F/3000) dB
Over 15 kHz : above 28 dB
Spectrum Noise Suppression
For All Modulation
f0+ 20 kHz ~ f0+45 kHz : above 26 dB
For Modulation by Voice and SAT
f0+45 kHz : above 63 +10LOG (Py) dB
For Modulation by WBD (without SAT) and ST (with SAT)
f0+45 kHz ~ f0+60 kHz : above 45 dB
f0+60 kHz ~ f0+90 kHz : above 65 dB
f0+90 kHz ~ 2f0: above 63 +10LOG (Py) dB
(where f0= carrier frequency
Py= mean output power in watts)
Harmonic and Conducted Spurious Emissions : above 43 +10LOG (Py) dB
RECEIVER
DE-Emphasis : – 6 dB/OCT within 0.3 ~ 3 kHz
Expander
Expansion Rate : 1:2
Attack Time : within 3 ms
Recovery Time : within 13.5 ms
Reference Input : Output level to a 1000 Hz tone from a carrier within ±2.9
kHz peak frequency deviation
Sensitivity : 12 dB SINAD/–116 dBm
Intermodulation Spurious Response Attenuation : above 65 dB
RSSI Range : above 60 dB
Protection Against Spurious Response Interference : above 60 dB
In Band Conducted Spurious Emissions
Transmit Band : below – 60 dBm
Receive Band : below – 80 dBm
Out of Band Conducted Spurious Emissions : below – 47 dBm

Radiated Spurious Emissions
Samsung Electronics-Contents may change without notice. 2-3
Specification
Frequency Range
25 ~ 70 MHz
70 ~ 130 MHz
130 ~ 174 MHz
174 ~ 260 MHz
260 ~ 470 MHz
470 ~ 1 GHz
Maximum Allowable EIRP
– 45 dBm
– 41 dBm
– 41 ~ – 32 dBm
– 32 dBm
– 32 ~ – 26 dBm
– 21 dBm
2-3 Digital Mode
Waveform Quality : above 0.944
Time Reference : within ± 1uS
RX Sensitivity : – 104 dBm, FER = within 0.5%
Dynamic Range : – 104 dBm ~ – 25 dBm, FER = within 0.5%
TX Output Power : Maximum 320 mW (25dBm)
TX Frequency Deviation : within ± 300 Hz
Occupied Band Width : 1.32 MHz
TX Conducted Spurious Emissions : 900 kHz below – 42 dBc / 30 kHz
: 1.98 MHz below – 54 dBc / 30 kHz
Minimum TX Power Control : below – 50 dBm
Open Loop Power Control : – 25 dBm – 57.0 dBm ~ – 38.5 dBm
– 65 dBm – 17.5 dBm ~ + 1.5 dBm
– 104 dBm + 18.0 dBm ~ + 30.0 dBm
Standby Output Power : below – 61 dBm
Closed Loop TX Power Control Range : Test 1 beyond ± 24 dB
Test 2 0 mS ~ 2.5 mS
Test 3 beyond ± 24 dB
Test 4 beyond ± 24 dB
Test 5 beyond ± 24 dB

Samsung Electronics - Contents may change without notice.2-4
Specification
MSC Transmitter Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 824.640MHz 11 404 837.120MHz
2 29 825.870MHz 12 445 838.350MHz
3 70 827.100MHz 13 486 839.580MHz
4 111 828.330MHz 14 527 840.810MHz
5 152 829.560MHz 15 568 842.040MHz
6 193 830.790MHz 16 609 843.270MHz
7 234 832.020MHz 17 650 844.270MHz
8 275 833.250MHz 18 697 845.910MHz
9 316 834.480MHz 19 738 847.140MHz
10 363 835.890MHz 20 779 848.370MHz
MSC Receiver Frequency
FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY
1 1011 869.640MHz 11 404 882.120MHz
2 29 870.870MHz 12 445 883.350MHz
3 70 872.100MHz 13 486 884.580MHz
4 111 873.330MHz 14 527 885.810MHz
5 152 874.560MHz 15 568 887.040MHz
6 193 875.790MHz 16 609 888.270MHz
7 234 877.020MHz 17 650 889.270MHz
8 275 878.250MHz 18 697 890.910MHz
9 316 879.480MHz 19 738 892.140MHz
10 363 880.890MHz 20 779 893.370MHz

2-4 CDMA Debug Display Information (menu 8)
2-5 FM Debug Display Information (menu 8)
Samsung Electronics-Contents may change without notice. 2-5
Specification
IN IDLE MODE
SIDxxxxx SIx x
T– xx Rxxx – xx
Pxxx CHxxxx
➀➁➂
➃
➆➄
➅
➇
SIDxxxxx x
PWR x RSSIxxx
SATx CHxxxx
➀➂
➁
➂➅
➄
IN CONVERSATION MODE
SVx RVx xx x
T – xx Rxxx – xx
Pxxx CHxxxx
➈⑩
➂
11
11
➀Sxxxxx : SID (System ldentification) toggle
Nxxxxx : NID (Network Identification) toggle
➁ Slx : Slot cycle index (lowest between the system
and the phone will be used)
➂Handset Status : 0 - Acquisition
1 - Synchronization
2 - Paging (Idle)
3 - Traffic Initialization
4 - Traffic Mode
5 - Exit
➃T-xx : Tx adjust, Value ranges from +63 ~-63dB
➄Dxxx or Rxxx : sector power in dBm
➅-xx : ec/Io
➆Pxxx : PN offset or Pilot #
➇CHxxxx : channel number
➈TV : Tx vocoder rate (8 is full rate, 1 is 1/8th rate)
⑩RV : Rx vocoder rate (8 is full rate, 1 is 1/8th rate)
xx : Walsh code used in traffic channel
➀SIDxxxxx : FM Home System ID
➁PWRx : Power Level 0~7
➂SATx : Supervisory Audio Tone code (0~3)
➃ x (Using Frequency Band) : A Band or B Band
➄RSSIxxx : RSSI value
➅ CHxxx : Using Channel