Campbell COM210 Manual de instrucciones descargar pdf (Pagina 19)

B-1

Appendix B. CS I/O Connection

B.1 CS I/O 9-Pin Connection

The pin out of the connector is shown in Figure B-1. The direction of the

signal relative to the modem is shown in parenthesis. Unless specified

otherwise, all levels are 0 V for logic low, 5 V for logic high.

FIGURE B-1. CS I/O Pin Out

1. (input) +5 VDC supply. Not used by COM210.

2. (input) Ground

3. (output) Ring - a logic high signifies a ring signal has been detected

4. (output) RX Data - serial data from COM210

5. (input) Modem Enable - a logic high internally switches power to the

modem. A logic low internally shuts off power to the modem.

6. (input) Serial Device Enable - a logic high disables communication with

the modem without removing power or changing the modem's mode.

7. (input) SDC clock. Not used by COM210.

8. (input) +12 VDC supply

9. (input) TX Data - serial data to COM210

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Campbell COM210 Manual de instrucciones Pagina 19