41
W&T
Serial PCI cards
Subject to error and alteration
Low Profile PCI cards: General characteristics
Function
All serial Low Profile PCI cards add the functionality of maxi-
mum four additional serial ports to your PC. One of these ports
(Port 1) is integrated on the interface card, whereas three addi-
tional, optional ports (ports 2 through 4) are connected to the
circuit board through ribbon cable. These optional ports are
configured on the PCI card as serial TTL interfaces which can
be converted into any serial standard interface (RS232, RS422,
RS485 or 20mA) using W&T Interface Modules.
Adapting to the physical housing requirements
The serial interface cards are supplied with a short slot bracket
which enables installation in Low Profile PCI systems. A longer
slot bracket is provided for attaching the cards in standard PCI
systems; this is attached to the circuit board in place of the
short slot bracket.
To make the switch, remove the two threaded pins on the SUB-
D plug, remove the slot bracket and attach the new bracket to
the SUB-D plug using the threaded pins.
Port 2
Port 3
Port 4
Pin 1
Pin 1
Pin 1
Port 1
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