UT-520 , External-powered Serial Port Hub 300 - 115.2K BPS

UT-520 , External-powered Serial Port Hub 300 - 115.2K BPS

Electric interface:10-bit wiring post connector for both input and output ends of RS-485
Interface:compatible with RS-485 standard of EIA/TIA
Transmission media:twisted-pair cable or shielded cable
Working mode:aasynchronous half-duplex
Transmission rate:300-115.2K BPS

Specifications:

Pin assignment of 2-port RS-485 input end

Pin assignment of 2-port RS-485 output end

Description:   

Compatible with the Recommended Standard of RS-485, UT-520 photoelectric isolation data repeater can extend the communication distance of RS-485 BUS network and increase the number of RS-485 network equipments. The built-in photoelectric isolator and the DC/DC isolation module can provide an isolation voltage of as high as 2,500Vrms. Also, there are rapid transient voltage suppression protectors for the protection of 2-port RS-485 interfaces at both ends with the advanced TVS (TRANSIENT VOLTAGE SUPPRESSOR) technology adopted. Under normal conditions, the TVS tube is in the state of high resistance. However, when both ends of the TVS tube are hit by a transient high energy, the impedance at both ends can be depressed by the TVS at a very high speed, and after absorbing a high current, the voltage between the two ends is suppressed and kept at a pre-set value, therefore no damage is caused to the electrical components behind by the transient high voltage impact.

The protector can effectively restrain lightning or ESD (electro static discharge) with a protection voltage of 600W on each line for lightning surge and surge voltage or transient over voltage possibly caused up by various reasons, and at the same time, a high-speed transmission of 2-port RS-485 interface is ensured by the tiny capacitance between the poles. For both input and output, wiring post connectors (PIN) are used for connection. The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically without any handshaking signal (for example RTS, DTR etc). The converter is plug-and-play without any jumper settings needed for mode shift to half duplex (RS-485).

A reliable and stable point-to-point and point-to-multipoint communication can be ensured by UT-520 photoelectric isolation interface converter. For point-to-multipoint communication, as many as 128 interface facilities of RS-485 standard can be connected to each converter, and a high data transmission rate of 300-115.2KBPS can be achieved. Power indicator light and data traffic indicator light are also available with the converter for malfunction indication.