Introduction:

The PDSM-700 series is a family of Programmable Device Servers, also known as "Serial-to-Ethernet gateway", that are designed for linking RS-232/422/485 devices to an Ethernet network. The user-friendly VxComm Driver/Utility allows users to easily turn the built-in COM ports of the PDSM-700 series into standard COM ports on a PC. By virtue of its protocol independence, a small-core OS and high flexibility, the PDSM-700 series is able to meet the demands of every network-enabled application.

The PDSM-700 series includes a powerful and reliable Xserver programming structure that allows you to design your robust Ethernet applications in one day. The built-in, high-performance MiniOS7 boots the PDSM-700 up in just one second and gives you fastest responses.

The PDS series offer TVS diode ESD protection technology, protecting your system from being damaged by the unexpected high voltage. The PDSM-700 is the PDS-700 with Metal Case (RoHS). Metal Case version includes stronger protection than PDS-700.

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 junction 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.