
9
KX-TG5771BXS/KX-TGA570BXS
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).
Содержание KX-TG5771BXS
Страница 2: ...2 KX TG5771BXS KX TGA570BXS ...
Страница 6: ...6 KX TG5771BXS KX TGA570BXS 3 Specifications ...
Страница 24: ...24 KX TG5771BXS KX TGA570BXS 4 8 2 Power Supply Circuit Voltage is supplied separately to each block ...
Страница 33: ...33 KX TG5771BXS KX TGA570BXS 4 11 Signal Route Each signal route is as follows ...
Страница 34: ...34 KX TG5771BXS KX TGA570BXS Each signal route is as follows RF part signal route ...
Страница 35: ...35 KX TG5771BXS KX TGA570BXS 5 Location of Controls and Components 5 1 Controls 5 1 1 Base Unit ...
Страница 37: ...37 KX TG5771BXS KX TGA570BXS 5 2 3 Handset Menu Icons ...
Страница 40: ...40 KX TG5771BXS KX TGA570BXS 6 5 Expanding Your Phone System ...
Страница 41: ...41 KX TG5771BXS KX TGA570BXS 7 Operation Instructions 7 1 Symbols Used in These Operating Instructions ...
Страница 43: ...43 KX TG5771BXS KX TGA570BXS ...
Страница 44: ...44 KX TG5771BXS KX TGA570BXS 7 2 2 Programming Using the Direct Commands ...
Страница 46: ...46 KX TG5771BXS KX TGA570BXS 7 4 Error Messages ...
Страница 47: ...47 KX TG5771BXS KX TGA570BXS 7 5 Troubleshooting ...
Страница 48: ...48 KX TG5771BXS KX TGA570BXS ...
Страница 49: ...49 KX TG5771BXS KX TGA570BXS ...
Страница 69: ...69 KX TG5771BXS KX TGA570BXS 10 2 9 1 RF DSP Interface Signal Wave Form Test Burst Mode ...
Страница 70: ...70 KX TG5771BXS KX TGA570BXS Test Burst Mode ...
Страница 77: ...77 KX TG5771BXS KX TGA570BXS 11 1 2 Handset ...
Страница 78: ...78 KX TG5771BXS KX TGA570BXS 11 1 3 Charger Unit ...
Страница 79: ...79 KX TG5771BXS KX TGA570BXS 11 2 Fix the LCD and the Receiver Guide to the Main P C Board Handset ...
Страница 91: ...91 KX TG5771BXS KX TGA570BXS Memo ...
Страница 100: ...100 KX TG5771BXS KX TGA570BXS Memo ...
Страница 109: ...109 KX TG5771BXS KX TGA570BXS 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...
Страница 110: ...110 KX TG5771BXS KX TGA570BXS 15 3 2 IC801 Backside Terminal GND ...
Страница 111: ...111 KX TG5771BXS KX TGA570BXS 15 3 3 IC851 Backside Terminal GND ...
Страница 112: ...112 KX TG5771BXS KX TGA570BXS 15 4 Terminal Guide of the ICs Transistors and Diodes 15 4 1 Base Unit 15 4 2 Handset ...
Страница 113: ...113 KX TG5771BXS KX TGA570BXS 16 Exploded View and Replacement Parts List 16 1 Cabinet and Electrical Parts Base Unit ...
Страница 115: ...115 KX TG5771BXS KX TGA570BXS 16 3 Cabinet and Electrical Parts Charger Unit ...
Страница 116: ...116 KX TG5771BXS KX TGA570BXS 16 4 Accessories and Packing Materials 16 4 1 KX TG5771BXS ...
Страница 117: ...117 KX TG5771BXS KX TGA570BXS 16 4 2 KX TGA570BXS ...