H422B is the interface converter between RS-232 and RS-422. It is powered from serial port (such as COM port of computer ), no outside power needed. Small size, long transmission distance, high rate, stable performance. It applys DB9 common serial port. It is used widely in the field of electricity, industrial automatic control, IC card billing system. It is a high quality low price data interface conversion product.
Features:
1. Port-powered from RS232 port (TXD,RTS,DTR): no external power is necessary
2. Convert RS-232(TXD,RXD signal) to RS-422 signal
3. Plug-and-Play (hot-pluggable, Data format Auto-sensing & Self-adjusting)
4. Data direction auto-turnaround, no flow control is required
5. Point to multi point, support 128 nodes loopback
Specification:
Standards: EIA RS-232C, RS-422 standard
RS-232 signal: TX, RX, GND
RS-422 signal: T+, T-,R+,R-, GND
Working mode: Asynchronism, point to point, 4 wire full-duplex
Transfer rate: 300~115200bps, auto test serial signal rate detect signal speed automatically, zero delay time
Flow control: Data direction auto-turnaround, no flow control is required
Max number of drops: 128 nodes
Transfer distance: RS-422 side: 1.2Km
RS-232 side: no less than 5m
Port protect: 1500W surge protection,15KV ESD protection
Connector: RS-232 side DB9 female
RS-422 side DB9M( DB9F to 5 bit terminal block)
Power
Power input: No power supply need, powered from RS-232 port TXD, RTS, DTR
Consumption: Static less than 10mA, dynamic less than 40mA
Environment
Operating temperature: -10°C to 60°C
Storage temperature: -40°C to 85°C
Humidity: 5% to 95%(no condensation)
Appearance
Dimensions: 90.0mm×33.0mm×16.5mm(DB9)
Material: Plastic(shell)
Weight: 40g
