ICP DAS New Product: VXC-112U, VXC-142U, VXC-142iU, VXC-182iU
Universal PCI, 2-Port RS-232/422/485 Communication Board
 
 
Introduction:
 
The VXC-112U, VXC-142U/142iU and VXC-182iU communication cards provide 2 serial ports (RS-232 or RS-422/485) and support 3.3 V/5 V PCI bus. Each port equips a 128-byte hardware FIFO, and supports for speed up to 115200 bps. The RS-422/RS-485 serial port of VXC-142iU and VXC-182iU tolerate isolation voltage up to 2.5 kV. Users can choose the communication port configured as either RS-485 for half-duplex or RS-422 for full-duplex communication.

Users can select a specified COM port number manually by setting DIP switch, or let the driver choose an available number automatically. The driver provides a maximum of 128 KB software FIFO for each COM port under Windows. It's practical for large file transmission.

In harsh industrial environments, the on board ESD protection component diverts the potentially damaging charge away from sensitive circuit and protects the computer and equipment from damage caused by high potential voltage.

The serial communication card are designed for use with intelligent devices like bar code reader, serial printers, intelligent sensors, instrumentation equipment, computers and almost any device with an RS-232 or RS-422/485 port.
 
ESD Protection
The VXC cards offer TVS diode ESD protection technology, protecting your system from being damaged by the high potential voltages.
 
How does TVS diode work?
Under normal operating conditions, the TVS diode presents high impedance (appears as an open circuit) to the protected component. When the voltage is beyond the limits, the TVS diode avalanches providing a low impedance path for the transient current. As a result, the transient current is diverted away from the protected components and shunted through the TVS diode. The device returns to a high impedance state after the transient threat passed.
 
Hardware FIFO up to 128 bytes
FIFO stands for "First In, First Out", an abstraction in ways of organizing and manipulating data relative to time and prioritization. FIFO is used for buffering and flow control while data come from hardware to software. When using hardware FIFO (buffer), a little delay on software or operating system will not lost data at all.
 
VXC Cards are equipped with 16- or 128-byte hardware FIFO for each port. Large hardware FIFO is useful to prevent data lost when your system works on heavy loading, and even helpful while you are running on a multi-task operating system, such as Windows, Linux¡K etc.
 
Multi-port Serial Card Selection Guide 
Model Bus COM-Selector RS-232 Ports RS-422/485 Self-Tuner ESD Protection Max. Speed (bps) FIFO Size (bytes) Connector Dimensions (mm)
Ports Isolation
Universal PCI Yes 2 - - - +/-4 kV 115.2 K 128 Male DB-9 120 x105
Universal PCI Yes - 2 - Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105
Universal PCI Yes - 2 3 kV Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105
Universal PCI Yes 1 1 3 kV Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105
 
Features:
   
  • Built-in COM-Selector
  • Short Card Design
  • Supports 3.3 V/5 V PCI bus, Plug and Play
  • Self-Tuner Inside for RS-485 port
   
  • +/-4 kV ESD Protection
  • 2.5 kV Isolated for RS-422/485 Port of VXC-142iU and VXC-182iU
   
   
  • Up to 128 KB Software FIFO (max.) for each COM Port under Windows
  • 128-byte hardware FIFO for each port
   
   
 
For more information, please visit the following web site:
 
The VXC Family -- Mulit-port Serial Cards:
Model Description
VXC-112U Universal PCI Bus, serial communication board with 2 RS-232 ports
VXC-142U Universal PCI Bus, serial communication board with 2 RS-422/485 ports
VXC-142iU Universal PCI Bus, serial communication board with 2 Isolated RS-422/485 ports
VXC-182iU Universal PCI Bus, serial communication board with 1 Isolated RS-422/485 port and 1 RS-232 port
 
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