If the device, which using RS-232 port for data transmission, is located farther than 50ft from DVR, POS port converter is needed since serial cable (RS-232) is limited by its short distance range.

The POS port converter converts RS-232 to RS-485, which has greater range up to 4000ft. However, computers only accept serial cable (RS-232) connections; RS-485 has to be converted back to RS-232, using PTZ port converter provided with DiViS products.

POS (serial port) �� POS port converter (convert RS-232 to RS-485) �� PTZ port converter (convert RS-485 to RS-232) �� System (serial port)