8
KX-TG9333PK/KX-TG9334PK/KX-TGA931T
4.1.3.
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-TG9333PK - Expandable Cordless Phone
Page 2: ...2 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 28: ...28 KX TG9333PK KX TG9334PK KX TGA931T 4 10 Signal Route ...
Page 29: ...29 KX TG9333PK KX TG9334PK KX TGA931T RF part signal route ...
Page 34: ...34 KX TG9333PK KX TG9334PK KX TGA931T 7 1 2 Programming using the Direct Commands ...
Page 35: ...35 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 36: ...36 KX TG9333PK KX TG9334PK KX TGA931T 7 2 Error Messages ...
Page 37: ...37 KX TG9333PK KX TG9334PK KX TGA931T 7 3 Troubleshooting ...
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Page 70: ...70 KX TG9333PK KX TG9334PK KX TGA931T 11 1 2 Handset ...
Page 71: ...71 KX TG9333PK KX TG9334PK KX TGA931T 11 1 3 Charger Unit ...
Page 72: ...72 KX TG9333PK KX TG9334PK KX TGA931T 11 2 How to Replace the Handset LCD ...
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Page 78: ...78 KX TG9333PK KX TG9334PK KX TGA931T Memo ...
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Page 101: ...101 KX TG9333PK KX TG9334PK KX TGA931T 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...