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Field Service Ver. 7.0 Jan. 2009
2. COMMUNICATION CONTROL
4
5
FK-502/Network Fax
OUTLINE
H. Others
(1) Minimum reception signal level (RLSD) (half-duplex mode only)
• The reception circuit is turned to On when the signal becomes 43 dBm or more
• When the signal becomes 48 dBm or less, the reception circuit is turned Off within 20 to
25ms after it has exceeded the thresh old.
(2) Data frame structure
• All data transmitted in V.34 (after the Phase 4) is treated in the following frame format.
J
:The number of data frames within one super frame
P
:The number of mapping frames within one data frame
Modulation Speed
J
P
2400 baud
7
12
2743 baud
8
12
2800 baud
7
14
3000 baud
7
15
3200 baud
7
16
3429 baud
8
15
Super frame
Data frame
Mapping frame
Four-dimensional symbol
280ms
0
1
...
J-1
0
1
...
P-1
J=0
3
1
2
K=0
1
40 or 35ms
Y104784-2 Service Manual
Содержание FK-502
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Страница 189: ...10 APPENDIX Field Service Ver 7 0 Jan 2009 182 FK 502 Network Fax APPENDIX 10 2 5 Others 2 Service Manual Y104784 2 ...
Страница 190: ...Field Service Ver 8 0 Jul 2009 10 APPENDIX 183 FK 502 Network Fax APPENDIX 10 2 6 Other 3 Y104784 2 Service Manual ...
Страница 193: ...10 APPENDIX Field Service Ver 7 0 Jan 2009 186 FK 502 Network Fax APPENDIX Blank Page Service Manual Y104784 2 ...
Страница 194: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 03 2009 1ST EDITION 190 Y104783 3 09 2009 2ND EDITION 194 Y104784 2 ...