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BASE UNIT
HANDSET
Channel No
Transmit Frequency
Receive Frequency
Transmit Frequency
Receive Frequenc
1
1897.344
1897.344
1897.344
1897.344
2
1895.616
1895.616
1895.616
1895.616
3
1893.888
1893.888
1893.888
1893.888
4
1892.160
1892.160
1892.160
1892.160
5
1890.432
1890.432
1890.432
1890.432
6
1888.704
1888.704
1888.704
1888.704
7
1886.976
1886.976
1886.976
1886.976
8
1885.248
1885.248
1885.248
1885.248
9
1883.520
1883.520
1883.520
1883.520
10
1881.792
1881.792
1881.792
1881.792
Note:
Channel No. 10: In the Test Mode on Base Unit and Handset.
19. BLOCK DIAGRAM (BASE UNIT)
20. CIRCUIT OPERATION (BASE UNIT)
20.1. Outline
Base Unit consists of the following ICs as shown in
BLOCK DIAGRAM (BASE UNIT)
().
- DECT BBIC (Base Band IC): IC2
- Handling all the audio, signal and data processing needed in a DECT
base unit
- Controlling the DECT specific physical layer and radio section (Burst M
odule Controller section)
- ADPCM codec filter for speech encoding and speech decoding (DSP
section)
- Echo-cancellation and Echo-suppression (DSP section)
- Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
- DTMF receiver (DSP section)
- Clock Generation for RF Module
- ADC, DAC, timer, and power control circuitry
- All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)
- RF Module: IC3
- PLL Oscillator
- Detector
- Compress/Expander
- First/Second Mixer
52
www.freeservicemanuals.info
11/8/2014
Digitized in Heiloo, Holland
Содержание KX-TCD410AXM
Страница 23: ... To exit the operation press any time 23 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 51: ...18 FREQUENCY TABLE MHz 51 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 58: ...25 CPU DATA BASE UNIT 25 1 IC2 BBIC 58 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 74: ...74 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 76: ...76 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 82: ...82 www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...
Страница 104: ...PbF R1 R2 TP4 TP1 TP2 TP3 Digital Volt Meter 12Ω 2W A www freeservicemanuals info 11 8 2014 Digitized in Heiloo Holland ...