NMEA Autoswitch

The NSW-1 is no longer in production. Please see the NDC-4 which can be used as an Autoswitch...





IP66/IP68 Case and Grommet Design

A very robust polycarbonate case with a high waterproof certification. The small case size is ideal for space restrictive applications.

High Quality Angled Screw Terminals

The 'moving cage' type terminals make cable installation a simple and quick operation.

4 OPTO-Isolated NMEA 0183 Data Inputs
Receive the data from up to four NMEA devices. Galvanic Opto-isolation blocks any interfering noise signals / spikes - 'cleaning up' the signal and preventing ground loops.
NMEA 0183 and RS232 (PC) Serial Outputs

Allows any NMEA device and PC to read the auto-switched NMEA data output. Furthermore, special NMEA codes are used to label each NMEA sentence - allowing the NMEA device or PC to determine where all the NMEA information originated from.
Prioritised Inputs

Each input has a priority level that is fixed to the logical order that matches the input numbers, i.e. input 1 has the highest priority, and input 4 the lowest.

Powerful Processor

A high-speed microcontroller capable of 10 million instructions per second, and a large NMEA data buffer, allowing smoothing of short-term peaks in the NMEA data flow.

Intelligent Software
Determines the highest priority device with valid data, based on one of three reasons - a failure to send any NMEA data, an invalid NMEA sentence checksum, or if the validity flag(s) contained within the NMEA sentence indicate that this data is not valid and should only be used with caution (for GPS and Depth data).
Flash Upgradeable
The hardware's firmware (software) can be easily upgraded as and when necessary.
Very Low Current Consumption
Ideal for small vessels with small batteries.
Diagnostic Tri-Colour LED
Indicates operation mode, or if a hardware fault has been detected.

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