TE C H N I C A L SP E C I F I C A T I O N
.S
| . |
| Connectors and Pinouts |
| . . . |
| C R O S S O V E R C A B L E S |
| To connect directly from a PC (such as a laptop) to the DGy 201x |
| without connecting to the network, an Ethernet crossover cable must be |
| used. Crossover cables are available commercially. |
| In a crossover cable, one end of the cable is wired as a straight through |
| cable, using the pin assignments shown in Table |
| of the cable, the TX and RX interconnections are exchanged (crossed |
| over). |
| Ethernet uses balanced differential signals on twisted pairs of |
| conductors. It is important to use wires from the same pair for each pair |
| of signals. The standard pairs are shown in Table |
| wire of the pair has a solid color. The other wire (of the pair) is white with |
| a stripe of the same color as the other wire (e.g., Orange and |
| White/Orange). |
. . . . . . . . . | The |
| Association Standard |
| 201x can be explicitly controlled with ASCII Command Set instructions |
| sent via the |
| terminal. Refer to Chapter 6, for details on all commands. |
| C O N N E C T O R T Y P E A N D P I N O U T S |
| Physically, the |
| for the |
| Looking at the connector, pin #1 is located in the upper right corner, and |
| pin #9 is in the lower left corner. |
Figure A-3 RS-232 Female Connector
The
Table A-12 RS-232 Serial Connector Pinouts
Pin | Circuit | Description |
1 | CD | Carrier Detect |
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2 | TD | Transmit Data |
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3 | RD | Received Data |
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4 |
| (not connected) |
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5 | AB | Signal Ground (common return) |
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DGy Model 201x User’s Guide | 129 |