HESC-T-003 is a RS-232 serial port photoelectric isolator. It adopts advanced photoelectric isolation technology, and maximally protects RS-232 serial interface devices from harsh environment damage, such as ground loop circuit voltage, surge, lightning, ESD, hot-plug and electromagnetic interference, etc. One of the damages to RS-232 port is related to communication hardware. For example, device A connects device B with RS-232 port, if the voltage difference of ground line between A and B is up to 50V (usually up to 80V), RS-232 port will not work normally. The isolated voltage of RS-232 port will reach 2500 Vrms instantly, together with 500 VDC continuous peak voltage difference. ESD and electromagnetic interference protection also make RS-232 port from unintended damages. The photoelectric isolation technology is fully isolating the electrical devices from ground loop circuit on both ends. It converts the electrical signal to optic signal, then transmits the signal to another end, finally converts it back to electrical signal. This protects the communication device from ground loop circuit and surge interference, which greatly improve the reliability and stability of the communication system.
HESC-T-003 is widely applied in point-to-point RS-232 communication system, UNIX multi-user system, monitoring system, and ATM for power, insurance, telecommunications, railway, post office, finance, banking, securities and program control etc.