The VXC-112A card provides two independent RS-232 serial ports. Each port can be used in half-duplex or full-duplex communication. Users can either select a specified COM port number manually by setting the COM-Selector (dip switch), or let the driver choose an available number automatically. The driver provides a maximum of 128KB software FIFO for each COM port under Windows. It is practical for large file transmission.

In a harsh industrial environment, the on board surge protection can protect the computer and equipment from being damaged by high potential voltage.

Advantages

• Built-in COM-Selector
• Up to 128KB software FIFO for each COM port under Windows
• Short Card Design

Features

• Supports PCI bus, Plug and Play
• Provides 2-port RS-232
• Provides surge protection
• LEDs for the diagnostic indicators
• Provides DOS Lib and sample programs (with source codes)
• Supports Windows NT 4.0 (Standard COM port interface)
• Supports Windows 2K/XP/2003 (Standard COM port interface)
• Supports Linux driver (tty device interface)

Introduction to COM-Selector:

Many company's Plug&Play (PnP) COM port devices (such as USB device and PCI card) allocate a dynamical COM port number for the added new port. This unknown COM port number always confuse users. Each VXC series card equips with a special COM-Selector (dip switch) for the COM port number selection. Users can then choose a number by themself without confusion. However, automatically COM port number selection by system is also supported.

The COM-Selector is a very important and innovative feature of the VXC cards. It provides the following advantages:

• Users can select a COM port number by themself, prevents users' confusion by the unknown COM port number.
• Simplifies the COM port number selection without using any configuration utility programs. And Users do not need to install and study any configuration utility for different OS.
• Users can specify the COM port number exactly what they want, no matter which PCI slot the card is using.
• Automatic selection of an available COM port number is supported by setting the COM-Selector (dip switch) to 0 (default).
• Replace any existing card is very easy by setting the COM-Selector to the same number as the old one.
• It is very useful for the mass system installation since the same COM port number can be easily chosen by setting the COM-Selector.