Chapter 3 Connecting peripherals 23
Computer A Device B
Pin Signal Pin Signal
1 TX- – – 1 TX-
4 RX- – – 4 RX-
2 TX+ – – 2 TX+
3 RX+ – – 3 RX+
5 GND 5 GND
RS-422/RS-485 driver and receiver circuit
The following figure shows the circuits for the card's RS-422 and
RS-485 driver and receiver.
Driver and receiver circuit
Now that you have made all the required external connections,
you can close up your chassis (as described in Chapter 2). If you
are installing any other cards, do it now. You can then power up
your system as described in the next chapter.
Image not available
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