40055101TH Rev.4
390 /
1.
Block diagram
The circuit diagram shown on page 6/12 consists of Modem (14.4 kbps).
Modem consists the following functions:
•
Modulation/demodulation
Modulation type:
1)
ITU-T Rec. V17 (14400/12000/9600/7200 bps) for G3 picture data.
2)
ITU-T Rec. V29 (9600/7200 bps) for G3 picture data.
3)
ITU-T Rec. V27 ter (4800/2400 bps) for G3 picture data.
4)
ITU-T Rec. V21 channel 2 (300 bps) for binary signals defined in ITU-T Rec. T.30.
•
Automatic adaptive equalizer for G3 receive data with 300 bps data excluded.
•
Generation of signal tones
•
PB tone (multi-frequency tone) generation
•
Detection of single tones
•
D/A converter for send data (TX)
•
A/D converter for receive data (RX)
•
Amplitude equalizer for RX
•
Selectable attenuation for TX
•
Automatic gain control
Figure A3.1.6 shows the related signals of Modem.
A3.1.7
R44 Circuit Diagram (Page 7/12)
X'tal
CPU
IOGA
Modem
14.4 kbps
AD0 to AD7
A1 to A7
MDINT1-N
MDRST-N
MDCSI-N
MDMRD-N
MDMWR-N
S
7
IC12
IC12
R
RP
CN10
CN3
S
R
NCU
29.4912 MHz
R44
IC8
IC2
A8, B8
A6, B6
Figure A3.1.6 Related Signals of Modem
Содержание B4100
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Страница 545: ...40055101TH Rev 4 545 54 SECTION 1 CABINET ASSEMBLY FAX NIP FX048...
Страница 548: ...40055101TH Rev 4 548 SECTION 2 UNIT PRINTER...
Страница 550: ...40055101TH Rev 4 550 SECTION 3 UNIT 048 OPE PANEL...
Страница 552: ...40055101TH Rev 4 552 SECTION 4 OPEPANEL OPERATION PANEL ASSEMBLY...
Страница 554: ...40055101TH Rev 4 554 SECTION 5 FRAME ASSEMBLY SCANNER L...
Страница 556: ...40055101TH Rev 4 556 SECTION 6 PLATE ASSEMBLY SCANNER B...
Страница 558: ...40055101TH Rev 4 558 SECTION 7 PLATE ASSEMBLY SCANNER R...
Страница 560: ...40055101TH Rev 4 560 17 16 15 10 SECTION 8 FRAME ASSEMBLY SCANNER U...
Страница 562: ...40055101TH Rev 4 562 13 SECTION 9 COVER ASSEMBLY TOP...
Страница 564: ...40055101TH Rev 4 564 SECTION 10 PLATE ASSEMBLY BASE...
Страница 569: ...40055101TH Rev 4 569 SECTION 12 PRINTER HEAT ASSY...
Страница 571: ...40055101TH Rev 4 571 SECTION 13 CABLES...
Страница 574: ...40055101TH Rev 4 574 SECTION 1 CABINET ASSEMBLY...
Страница 576: ...40055101TH Rev 4 576 SECTION 2 CONTROL PANEL ASSEMBLY OKIFAX 5200 5300...
Страница 577: ...40055101TH Rev 4 577 SECTION 2 CONTROL PANEL ASSEMBLY OKIFAX 5500 5600...
Страница 579: ...40055101TH Rev 4 579 SECTION 3 PRINTER ASSEMBLY...
Страница 582: ...40055101TH Rev 4 582 SECTION 4 BASE ASSEMBLY 30 37 38...
Страница 585: ...40055101TH Rev 4 585 SECTION 5 SCAN UNIT...
Страница 587: ...40055101TH Rev 4 587 SECTION 6 PAPER GUIDE U ASSEMBLY...
Страница 589: ...40055101TH Rev 4 589 SECTION 7 CABLES 10...
Страница 591: ...40055101TH Rev 4 591 SECTION 8 OPTION TELEPHONE US...
Страница 594: ...40055101TH Rev 4 594 SECTION 8 OPTION TELEPHONE UK ITA NOR DEN BEL...
Страница 597: ...40055101TH Rev 4 597 SECTION 8 OPTION TELEPHONE HOL GER FRA SWITZ AUT INT L...
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