9
KX-TG6700B/KX-TG6702B/KX-TGA670B
4.1.3.
Signal Flowchart in the Whole System
Reception
CN101 of the Base Unit is connected to the TEL line, and signal is enter through the bridge diode D101. While talking, the relay
(Q141) is turned ON and amplified at the Q171, then led to DSP (IC501). The DSP encodes ADPCM and TDD/TDMA with
FHSS to TXMOD. The TXMOD signal is enter to IC701 of RF PART, and modulated to 2.4 GHz. The 2.4 GHz signal is up-
converted to 5.8 GHz RF signal by IC801. The RF signal is amplified by the power amplifier (IC851) and fed to Antennas.
As for the Handset, RF signal from the antenna is amplified by LNA (IC851). The amplified signal is down-converted to 2.4 GHz
signal by IC801 and led to IC701. The 2.4 GHz is down-converted to IF signal in IC701. The IF signal passing through internal
filter is demodulated into RXDATA, then enter to DSP (IC201). The DSP performs TDD/TDMA and ADPCM decoding to convert
the RXDATA into the voice signal, then it is output to the speaker.
Transmission
The voice signal entering from the Handset microphone is led to DSP (IC201). The DSP encodes ADPCM and TDD/TDMA with
FHSS to TXMOD. The TXMOD signal is enter to IC701 of RF PART, and modulated to 2.4 GHz. The 2.4 GHz signal is up-
converted to 5.8 GHz RF signal by IC801. The RF signal is amplified by the power amplifier (IC851) and fed to Antenna.
As for the Base Unit, RF signal from the Antennas is amplified by LNA (IC851). The amplified signal is down-converted to 2.4
GHz signal by IC801 and led to IC701. The 2.4 GHz is down-converted to IF signal in IC701. The IF signal passing through
internal filter is demodulated into RXDATA, then enter to DSP (IC501). The DSP performs TDD/TDMA and ADPCM decoding to
convert the RXDATA into the voice signal. The voice signal is amplified at the TX amplifier (Q161), then output to the TEL line
CN101 through the relay (Q141) and bridge (D101).
Summary of Contents for KX-TG6700B - Cordless Phone - Operation
Page 2: ...2 KX TG6700B KX TG6702B KX TGA670B ...
Page 6: ...6 KX TG6700B KX TG6702B KX TGA670B 3 Specifications ...
Page 36: ...36 KX TG6700B KX TG6702B KX TGA670B 4 11 Signal Route Each signal route is as follows ...
Page 37: ...37 KX TG6700B KX TG6702B KX TGA670B RF part signal route ...
Page 41: ...41 KX TG6700B KX TG6702B KX TGA670B 6 1 2 Connecting the Telephone Line Cord ...
Page 42: ...42 KX TG6700B KX TG6702B KX TGA670B 6 1 2 1 If you subscribe to a DSL service ...
Page 47: ...47 KX TG6700B KX TG6702B KX TGA670B ...
Page 48: ...48 KX TG6700B KX TG6702B KX TGA670B 7 2 2 Programming Using the Direct Commands ...
Page 49: ...49 KX TG6700B KX TG6702B KX TGA670B ...
Page 50: ...50 KX TG6700B KX TG6702B KX TGA670B 7 3 Error Messages ...
Page 52: ...52 KX TG6700B KX TG6702B KX TGA670B ...
Page 53: ...53 KX TG6700B KX TG6702B KX TGA670B ...
Page 54: ...54 KX TG6700B KX TG6702B KX TGA670B ...
Page 75: ...75 KX TG6700B KX TG6702B KX TGA670B Test Burst Mode ...
Page 82: ...82 KX TG6700B KX TG6702B KX TGA670B 11 1 2 Handset ...
Page 83: ...83 KX TG6700B KX TG6702B KX TGA670B 11 1 3 Charger Unit ...
Page 95: ...95 KX TG6700B KX TG6702B KX TGA670B Memo ...
Page 99: ...99 KX TG6700B KX TG6702B KX TGA670B Memo ...
Page 108: ...108 KX TG6700B KX TG6702B KX TGA670B Memo ...
Page 118: ...118 KX TG6700B KX TG6702B KX TGA670B 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...
Page 119: ...119 KX TG6700B KX TG6702B KX TGA670B 15 3 2 IC801 Backside Terminal GND ...
Page 120: ...120 KX TG6700B KX TG6702B KX TGA670B 15 3 3 IC851 Backside Terminal GND ...
Page 124: ...124 KX TG6700B KX TG6702B KX TGA670B 16 3 Cabinet and Electrical Parts Charger Unit ...
Page 125: ...125 KX TG6700B KX TG6702B KX TGA670B 16 4 Accessories and Packing Materials 16 4 1 KX TG6700B ...
Page 126: ...126 KX TG6700B KX TG6702B KX TGA670B 16 4 2 KX TG6702B ...
Page 127: ...127 KX TG6700B KX TG6702B KX TGA670B 16 4 3 KX TGA670B ...