6.6. MODEM SECTION
6.6.1. FUNCTION
The unit uses a 1 chip modem (IC5), enabling it to act as an interface between the control section for FAX sending and
receiving, and the telephone line. During a sending operation, the digital image signals are modulated and sent to the telephone
line. During a receiving operation, the analog image signals which are received via the telephone line are demodulated and
converted into digital image signals. The communication format and procedures for FAX communication are standardized by
ITU-T. This 1 chip modem (IC5) has hardware which sends and detects all of the necessary signals for FAX communication and
DTMF.
It can be controlled by writing commands from the ASIC (IC1) to the register in the modem (IC5).
This modem (IC5) also sends DTMF signals, and detects busy tones, dial tones and DTMF.
Overview of Facsimile Communication Procedures (CCITT Recommendation):
1. ON ITU-T (International Telecommunications´ Union.)
The No. XIV Group of CCITT, one of the four permanent organizations of the International Telecommunications Uniib (ITU),
investigates and make recommendations on international standards for facsimiles.
2. Definition of Each Group
·
Group I (G1)
A-4 size documents without using formats which reduce the band width of a signal sent over telephone lines.
Determined in 1968.
Transmission for about 6 minutes at scanning line density of 3.85 lines/mm.
·
Group II (G2)
Using reduction technology in the modulation/demodulation format, an A-4 size document is sent at an official scanning line
density of 3.85 lines/mm for about 3 minutes.
Methods to suppress redundancy are not used.
Determined in 1976.
·
Group III (G3)
A method of suppressing redundancy in the image signal prior to modulation is used. An A-4 size document is sent with
about one minute.
Determined in 1980.
·
Group IV (G4)
Transmission is via the data network. A method is provided for suppressing redundancy in signals prior to transmission, and
error-free reception of transmission is possible.
The scope of these facsimile applications is not limited simply to transmission of written statements. Through symbiotic
linkages with other communication methods, it can be expected to expand to include integrated services.
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KX-FT63BX / KX-FT63BX-W
Содержание KX-FT63BX
Страница 8: ...1 10 ITU T NO 1 TEST CHART 8 KX FT63BX KX FT63BX W ...
Страница 9: ...1 10 1 CCIT NO 2 TEST CHART 9 KX FT63BX KX FT63BX W ...
Страница 10: ...1 11 LOCATION OF CONTROLS 1 11 1 OVERVIEW 10 KX FT63BX KX FT63BX W ...
Страница 11: ...1 11 2 CONTROL PANEL 11 KX FT63BX KX FT63BX W ...
Страница 14: ...1 13 3 SETTING YOUR LOGO 14 KX FT63BX KX FT63BX W ...
Страница 26: ...2 3 3 1 SIMPLE CHECK LIST CROSS REFERENCE TEST FUNCTIONS P 82 26 KX FT63BX KX FT63BX W ...
Страница 30: ...2 3 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 85 30 KX FT63BX KX FT63BX W ...
Страница 34: ...CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 85 34 KX FT63BX KX FT63BX W ...
Страница 37: ...2 3 5 1 2 SOMETIMES THERE IS A TRANSMIT PROBLEM 37 KX FT63BX KX FT63BX W ...
Страница 39: ...2 3 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 39 KX FT63BX KX FT63BX W ...
Страница 44: ...Countermeasure 44 KX FT63BX KX FT63BX W ...
Страница 45: ...45 KX FT63BX KX FT63BX W ...
Страница 46: ...46 KX FT63BX KX FT63BX W ...
Страница 47: ...47 KX FT63BX KX FT63BX W ...
Страница 48: ...48 KX FT63BX KX FT63BX W ...
Страница 49: ...49 KX FT63BX KX FT63BX W ...
Страница 50: ...50 KX FT63BX KX FT63BX W ...
Страница 51: ...51 KX FT63BX KX FT63BX W ...
Страница 57: ...57 KX FT63BX KX FT63BX W ...
Страница 58: ...Normal Wave Patterns 58 KX FT63BX KX FT63BX W ...
Страница 60: ...60 KX FT63BX KX FT63BX W ...
Страница 62: ...62 KX FT63BX KX FT63BX W ...
Страница 63: ...2 3 6 2 NG EXAMPLE 63 KX FT63BX KX FT63BX W ...
Страница 66: ...Note Inside the digital board 66 KX FT63BX KX FT63BX W ...
Страница 67: ...2 3 7 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 67 KX FT63BX KX FT63BX W ...
Страница 69: ...2 Troubleshooting Flow Chart 69 KX FT63BX KX FT63BX W ...
Страница 73: ...73 KX FT63BX KX FT63BX W ...
Страница 79: ...2 4 5 SERVICE MODE SETTINGS Example of a printed out list 79 KX FT63BX KX FT63BX W ...
Страница 82: ...2 5 TEST FUNCTIONS CROSS REFERENCE BUTTON CODE TABLE P 83 PRINT TEST PATTERN P 83 82 KX FT63BX KX FT63BX W ...
Страница 85: ...4 DISASSEMBLY INSTRUCTIONS 4 1 HOW TO REMOVE THE BOTTOM FRAME 85 KX FT63BX KX FT63BX W ...
Страница 86: ...4 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 86 KX FT63BX KX FT63BX W ...
Страница 87: ...4 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 87 KX FT63BX KX FT63BX W ...
Страница 88: ...4 4 HOW TO REMOVE THE DIGITAL ANALOG POWER SUPPLY 88 KX FT63BX KX FT63BX W ...
Страница 89: ...4 5 HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER 89 KX FT63BX KX FT63BX W ...
Страница 90: ...4 6 HOW TO REMOVE THE MOTOR BLOCK 90 KX FT63BX KX FT63BX W ...
Страница 91: ...91 KX FT63BX KX FT63BX W ...
Страница 92: ...4 7 HOW TO REMOVE THE ROLLERS 92 KX FT63BX KX FT63BX W ...
Страница 93: ...4 8 HOW TO REMOVE THE IMAGE SENSOR 93 KX FT63BX KX FT63BX W ...
Страница 94: ...4 9 HOW TO REMOVE THE IMAGE SENSOR 94 KX FT63BX KX FT63BX W ...
Страница 95: ...4 10 HOW TO REMOVE THE DOCUMENT TRAY 95 KX FT63BX KX FT63BX W ...
Страница 96: ...4 11 HOW TO REMOVE THE INSTALLATION POSITION OF THE LEAD WIRES 96 KX FT63BX KX FT63BX W ...
Страница 98: ...5 3 FLAT PACKAGE IC INSTALLATION PROCEDURE 5 4 BRIDGE MODIFICATION PROCEDURE 98 KX FT63BX KX FT63BX W ...
Страница 110: ...6 4 2 BLOCK DIAGRAM 110 KX FT63BX KX FT63BX W ...
Страница 112: ...112 KX FT63BX KX FT63BX W ...
Страница 118: ...6 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 72 118 KX FT63BX KX FT63BX W ...
Страница 128: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 128 KX FT63BX KX FT63BX W ...
Страница 140: ...7 TERMINAL GUIDE OF THE IC S TRANSISTORS AND DIODES 140 KX FT63BX KX FT63BX W ...
Страница 141: ...8 FIXTURES AND TOOLS 141 KX FT63BX KX FT63BX W ...
Страница 142: ...9 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 9 1 OPERATION PANEL SECTION 142 KX FT63BX KX FT63BX W ...
Страница 143: ...9 2 UPPER CABINET SECTION 143 KX FT63BX KX FT63BX W ...
Страница 144: ...9 3 LOWER CABINET P C B SECTION 144 KX FT63BX KX FT63BX W ...
Страница 145: ...9 4 MOTOR SECTION 145 KX FT63BX KX FT63BX W ...
Страница 146: ...9 5 ACTUAL SIZE OF SCREWS AND WASHER 146 KX FT63BX KX FT63BX W ...
Страница 147: ...10 ACCESSORIES AND PACKING MATERIALS 147 KX FT63BX KX FT63BX W ...
Страница 165: ...165 KX FT63BX KX FT63BX W Y MKXFT63BX KXFT63BX W ...