VXC-112(i)(A)U/142(i)AU/182i(A)U/114(iA)U/144(i)U, VEX-114(i)/144(i) , VEX-112(i)/142(i) User’s Manual (Ver. 1.5
Aug.10 2012) -----4
ESD Protection
The VXC/VEX 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/VEX cards offer TVS diode ESD protection technology, protecting your system
from being damaged by the high potential voltages.
VXC/VEX 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/VEX 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.
