Octagon Systems X-COM-2 Reference Manual page 7

Chapter 1: Overview
Description
The XBLOK Dual Serial I/O Expansion Card (Model X–COM–2) provides two
16C550-compatible serial ports. Each port is individually programmable as
an 8-wire RS–232C, or a 4-wire RS–422 or RS–485 interface.
A DIP switch selects the base address, from 100h to 3F0fh in 16-byte
increments. Another DIP switch selects the interrupt, which is shared by the
two ports.
When RS–422 or RS–485 mode is selected, the ports can be individually
configured as terminated or nonterminated, depending on whether the node
is at the end of a network or not.
XBLOK form factor
XBLOK products are 44 percent the size of a standard PC/104 module.
XBLOK cards use either the PC/104 connector for 8- or 16-bit access to the
ISA bus, or the PC/104-Plus connector for 32-bit access to the PCI bus. This
allows designers to mix and match I/O functions while only taking up one
stack layer.
The X–COM–2 uses the 16-bit PC/104 connector.
Power requirements
The X–COM–2 operates on +5V, drawn from the PC/104 connector. It draws
65 mA typical.
Rugged environmental operation
Size
3.55" x 1.65" x 0.43", XBLOK form factor
Operating temperature
Nonoperating temperature
Relative humidity
Shock
Vibration
–40° to 85°C
–55° to 95°C
5% to 95% noncondensing
40g, 3 axis
5g, 3 axis
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