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boards:ecb:mf-pic:serial-io-tutorial [2015/11/12 04:49]
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boards:ecb:mf-pic:serial-io-tutorial [2015/11/12 04:50] (current)
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| BUT THE BOARD MAY BE JUMPERED TO LOOK LIKE A TERMINAL OR A MODEM. | BUT THE BOARD MAY BE JUMPERED TO LOOK LIKE A TERMINAL OR A MODEM. |
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| | {{:boards:ecb:mf-pic:serial-io-tutorial:jumpered-terminal.jpg?direct&300|}} |
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| A. Terminal jumpering: (see Jumpered-Terminal.JPG) For connection to an alpha terminal using a NULL MODEM CABLE, the board would be jumpered as shown, as indicated on the silkscreen. The cable does the crossing of signals to make the 25-pin connector look like a modem. Hence, this connector may be plugged into a terminal. | A. Terminal jumpering: (see Jumpered-Terminal.JPG) For connection to an alpha terminal using a NULL MODEM CABLE, the board would be jumpered as shown, as indicated on the silkscreen. The cable does the crossing of signals to make the 25-pin connector look like a modem. Hence, this connector may be plugged into a terminal. |
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| | {{:boards:ecb:mf-pic:serial-io-tutorial:jumpered-modem.jpg?direct&300|}} |
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| B. Modem jumpering: (see Jumpered-Modem.JPG) For connection to terminal with a DB-9 connector, this is the simplest cable to constuct. The 10-pin female IDC connector which plugs into the board is crimped to the 10-conductor flat cable, and wires 1-9 are crimped into the female DB-9 socket. Wire 10 is not connected. The board is jumpered to look like a modem, per the photo and the silkscreen. The DB-9 connector is Female, indicating it is a MODEM connection. Any terminal may plug into this "modem." | B. Modem jumpering: (see Jumpered-Modem.JPG) For connection to terminal with a DB-9 connector, this is the simplest cable to constuct. The 10-pin female IDC connector which plugs into the board is crimped to the 10-conductor flat cable, and wires 1-9 are crimped into the female DB-9 socket. Wire 10 is not connected. The board is jumpered to look like a modem, per the photo and the silkscreen. The DB-9 connector is Female, indicating it is a MODEM connection. Any terminal may plug into this "modem." |
