OPTO-4 Opto-Isolator Cable Datasheet
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OPTO-4 Opto-Isolator Cable Datasheet - 1

Award Winning NMEA Specialists OPTO-4 rNMEA to RS232 Opto-isolator 'xa'Isolate an RS232 (PC) port to protect against ground loops. The OPTO-4 provides a safe and low cost way of connecting an NMEA 0183 system to a PC or any other device with a standard RS232 9-pin port. As a bi-directional NMEA 0183 to RS232 interface cable, the OPTO-4 utilises OPTO-isolation to protect the PC input and spike protection for the PC output, providing comprehensive isolation of PC hardware when connecting to an NMEA 0183 bus. If isolation in both directions is required, the Actisense USG-2 offers bi-directional isolation in a USB to RS422 (NMEA 0183) form. The Actisense design integrates an overmoulded case for excellent water resistance and a small footprint for installation into tight spaces. The OPTO-4 takes power from the host RS232 signals including TX and the handshaking lines RTS and DTR, making the OPTO-4 suitable for most PC serial ports. In systems that cannot provide power on the handshaking lines, e.g. serial devices with only Rx and Tx lines, a DC power supply can be used. Note: Connecting an external power supply may create a ground loop between the PC port and the supply. Check that the supply ground is at the same potential as the PC ground before connecting. Please refer to the Quick Start Guide for detailed wiring instructions, including how to use an external power supply. NMEA Listener B/-*Black Wire Benefits • Protects PC from damage • Water resistant cable Features: ■ One OPTO-isolated input ■ One NMEA output ■ Up to 115200 baud ■ Port powered ■ Shielded cable and case What is OPTO-Isolation? Ground loops are very easy to create in an NMEA 0183 environment without even knowing about it and can wreak havoc with NMEA 0183 devices. OPTO-isolation (also referred to as optical isolation) is a way of creating a physical barrier to the flow of electrical current to prevent ground loops from happening. Electrical energy is converted to light and transmitted over a small gap where it is converted back to electrical energy using an electronic circuit. www.actisense.com Active Research Limited is registered in England, Company number: 3295909. VAT Registration number: GB 658 7968 55 Actisense from Active Research Limited

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OPTO-4 Opto-Isolator Cable Datasheet - 2

Electrical NMEA Listener / Input Isolation 2kV Opto-Isolation between Red / Black NMEA Input Pair and all other Connections NMEA Listener / Input Voltage +/-15V Continuous Maximum +/-35V Max < 1 Second NMEA Listener / Input Signal Thresholds NMEA Talker / Output Voltage & Current Dependant on Host RS232 Interface. Typically +/-5V to +/-15V @ 10mA Max RS232 Port Total Current Consumption Speed / Baud Rate Housing Material Thumb Screw Material Steel, Nickel Plated, M2.8 Thread Cable Length Cable Wire 22AWG (17/34AWG) Tinned Stranded Copper Cable Jacket Internal Copper Foil Shield Cable Outer...

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