9
KX-TH1211B/KX-TH1212B/KX-TGA930T
4.2.3.
Signal Flowchart in the Radio Parts
Reception
A voice signal from TEL line is encoded to digital data "TXDATA" by DSP (IC501) in a base unit.
Then TXDATA goes to RF PART, and it's modulated to 1.9 GHz. The RF signal is amplified and fed to a selected antenna.
As for a handset RF, RF signal is received in two antennas.
RFIC (IC701) compares RF signal levels and selects the antenna to be used. Then RFIC down-converts to 864 kHz IF signal
from RX signal in the selected antenna, and demodulates it to digital data "RXDATA".
DSP (IC501) converts RXDATA into a voice signal and outputs it to speaker.
Transmission
A voice signal from microphone is encoded to digital data "TXDATA" by DSP (IC501) in a handset.
Then TXDATA goes to RF PART, and it's modulated to 1.9 GHz. The RF signal is amplified and fed to a selected antenna.
As for a base unit RF, RF signal is received in two antennas.
RFIC (IC701) compares RF signal levels and selects the antenna to be used. Then RFIC down-converts to 864 kHz IF signal
from RX signal in the selected antenna, and demodulates it to digital data "RXDATA".
DSP (IC501) converts RXDATA into a voice signal and outputs it to TEL line.
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 ...