LG-
K
D3500
LGE
LG Electronics Inc.
2/21
The LG-
K
D3500 cellular phone functions as digital cellular phone worked in CDMA (Code Division
Multiple Access) mode.
CDMA mode applies the DSSS (Direct Sequence Spread Spectrum) technique that has been used in
military. This technique enables to share one frequency channel with many users in the same specific
area. As a result, that it increases the capacity 10 times more compared with that in the analog mode
(AMPS) currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF power Control technologies are combined into
this phone to reduce the call being interrupted in a middle of talking over phone.
CDMA digital cellular network consists of MSC (Mobile Switching Office), BSC (Base Station
Controller), BTS (Base station Transmission System), and MS (Mobile Station). Communication
between MS and BTS is designed to meet the specification of TIA/EIA/IS-95-A/B/C (Common Air
Interface). MS meets the specifications of the below :
- TIA/EIA/IS-95-A/B/C (Common Air Interface) : Protocol between MS and BTS
- TIA/EIA/IS-96-B : Speech CODEC
- TIA/EIA/IS-98 : Basic MS functions
- IS-126 : Voice loopback
- TIA/EIA/IS-99 : Short Message Service, Asynchronous Data Service, and G3 Fax Service
LG-
K
D3500 is composed of a transceiver, a adapter, a Li-Polymer Battery.
General Introduction
Содержание RD3500
Страница 2: ...CDMA MOBILE SUBSCRIBER UNIT LG KD3500 SINGLE BAND CDMA MOBILE PHONE SERVICE MANUAL ...
Страница 24: ...LG KD3500 LGE LG Electronics Inc 22 21 1 U201 QSC6010 CHAPTER 4 BGA IC Pin Check ...
Страница 25: ...LG KD3500 LGE LG Electronics Inc 23 21 2 U310 Memory ...
Страница 28: ...Circuit Diagram DP101 DP101 ...
Страница 36: ...4 3 2 Charging Trouble Test Points Circuit Diagram CON409 CON409 pin1 ...
Страница 47: ...4 3 10 LCD Trouble Test Points Circuit Diagram C O N 3 0 4 CON304 pin3 ...
Страница 50: ...CON302 Test Points Circuit Diagram 4 3 11 UIM Trouble R375 R378 R361 R376 ...
Страница 52: ...Test Points 4 3 12 FM Radio Trouble Circuit Diagram X 1 0 1 Pin1 Q102 Pin4 R307 R332 U103 Pin8 ...
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