VXC-114U/144U/144iU User’s Manual (Ver. 1.2, Mar.11, 2009) -----4
ESD Protection
The VXC cards offer TVS diode ESD protection technology, protecting your system from being
damaged by the high potential voltages.
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 passes.
Up To 128 Bytes Hardware FIFO:
The VXC cards offer TVS diode ESD protection technology, protecting your system from being
damaged by the high potential voltages.
VXC Cards are equipped with 16 or 128 bytes 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…etc.
Up To 128 KB COM Port Buffer:
The VXC card driver for Windows features a 128 KB maximum software FIFO for each port (default
is 4 KB). It’s practical for large file transmission.
