10
KX-TH1211B/KX-TH1212B/KX-TGA930T
4.3.
BT Unit Description
4.3.1.
Frequency
The frequency range of 2,402 MHz - 2,480 MHz is used. Refer to
Frequency Table
(P.56).
4.3.2.
Bluetooth Technology
This communication system uses the Chipset of Bluetooth technology. Bluetooth Technology make this system possible to use
multiple Voice and Data link simultaneously. Bluetooth technology uses the Frequency Hopping Spread Spectrum (FHSS)
scheme, and the Time Division Multiple Access/Time Division Duplex (TDMA/TDD) scheme.
4.3.2.1.
Frequency Hopping Spread Spectrum (FHSS)
FHSS is one of the schemes of Spread Spectrum technology. The advantage of Spread spectrum is lower average power
density, better tolerance to interference and better security. FHSS transmitter makes its spectrum spread by changing the
transmitting frequency very fast.
Bluetooth system changes its channel on every chance of transmitting, based on its own Hopping table. The maximum hopping
rate is 1600 hops/second, and the number of hopping channels is 79.
4.3.2.2.
Time Division Multiple Access/ Time Division Duplex (TDMA/TDD)
TDMA/TDD is time-sharing scheme for simultaneous multiple communication. TDMA/TDD structure of Bluetooth is more flexible
and complicate than other FHSS cordless telephone systems.
The length of a Bluetooth communication slot is 625
µ
s. On Base Unit, RX slot is always just after the TX slot to receive response
from Terminal Unit. Below figure is an example of Slot condition on Base Unit.
Summary of Contents for KX-TGA930T - Cordless Extension Handset
Page 2: ...2 KX TH1211B KX TH1212B KX TGA930T ...
Page 34: ...34 KX TH1211B KX TH1212B KX TGA930T 4 15 Signal Route ...
Page 35: ...35 KX TH1211B KX TH1212B KX TGA930T RF part signal route ...
Page 37: ...37 KX TH1211B KX TH1212B KX TGA930T 5 2 Display Indicators ...
Page 38: ...38 KX TH1211B KX TH1212B KX TGA930T 6 Installation Instructions 6 1 Connections ...
Page 42: ...42 KX TH1211B KX TH1212B KX TGA930T 7 1 2 Programming using the Direct Commands ...
Page 43: ...43 KX TH1211B KX TH1212B KX TGA930T ...
Page 44: ...44 KX TH1211B KX TH1212B KX TGA930T ...
Page 45: ...45 KX TH1211B KX TH1212B KX TGA930T 7 2 Error Messages ...
Page 46: ...46 KX TH1211B KX TH1212B KX TGA930T 7 3 Troubleshooting ...
Page 47: ...47 KX TH1211B KX TH1212B KX TGA930T ...
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Page 89: ...89 KX TH1211B KX TH1212B KX TGA930T 11 1 2 Handset ...
Page 90: ...90 KX TH1211B KX TH1212B KX TGA930T 11 1 3 Charger Unit ...
Page 91: ...91 KX TH1211B KX TH1212B KX TGA930T 11 2 How to Replace the Handset LCD ...
Page 92: ...92 KX TH1211B KX TH1212B KX TGA930T ...
Page 100: ...100 KX TH1211B KX TH1212B KX TGA930T Memo ...
Page 105: ...105 KX TH1211B KX TH1212B KX TGA930T Memo ...
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Page 118: ...118 KX TH1211B KX TH1212B KX TGA930T Memo ...
Page 130: ...130 KX TH1211B KX TH1212B KX TGA930T 15 5 DB56 DSP Package Description ...
Page 134: ...134 KX TH1211B KX TH1212B KX TGA930T 16 3 Cabinet and Electrical Parts Charger Unit ...
Page 135: ...135 KX TH1211B KX TH1212B KX TGA930T 16 4 Accessories and Packing Materials 16 4 1 KX TH1211B ...
Page 136: ...136 KX TH1211B KX TH1212B KX TGA930T 16 4 2 KX TH1212B ...
Page 137: ...137 KX TH1211B KX TH1212B KX TGA930T 16 4 3 KX TGA930T ...