Introduction

QK-A031 NMEA 0183 multiplexer enables the connection of multiple NMEA 0183 devices and host devices such as PCs, laptops or tablets. QK-A031 multiplexer has three NMEA 0183 inputs (listener-ports), one SeaTalk1 input, one NMEA 0813 output (talker-port), a WiFi interface and a USB port to connect to  host devices. The multiplexer combines NMEA data that is received on the listener ports and sends this data to a talker port, the WiFi interface and the USB port simultaneously. The USB port is also used for configuration of specific WiFi and NMEA ports settings. 

The built-in SeaTalk1 to NMEA converter translates SeaTalk data into NMEA sentences. This data is then combined with NMEA data received on the other inputs. This allows a SeaTalk instrument to communicate on the NMEA network. Only one SeaTalk input is provided since the SeaTalk bus is a single-cable system that connects all instruments together through one cable. The SeaTalk to NMEA converter in the QK-A031 works in one direction only. NMEA sentences are unable to be converted into SeaTalk, the multiplexer just listens on the SeaTalk bus.

Every NMEA input on the QK-A031 is galvanically isolated (also called opto-isolation). A galvanically isolated input prevents unwanted currents flowing between the instruments and the multiplexer. These currents can damage equipment or interfere with radio signals and should therefore be avoided. 

Working Mode

Features

· Multiplex up to three NMEA 0183 input devices.

· Galvanically isolated NMEA and SeaTalk input ports.

· Configurable baud rates: (4.8, 9.6, 38.4k input and output).

· Differential NMEA output with galvanically isolated protection

· Simultaneous wireless and USB output.

· The internal WiFi access point connects up to 7 devices simultaneously.

· SeaTalk to NMEA 0183 protocol converter

· Wide power supply voltage: DC 9-35 Volts.

Function diagram

 

Interface on the module

Download

Config tool can be downloaded here.

Application notes can be downloaded here.

Packing list

Quark-elec order number is QK-A031. In the package, you will have: QK-A031 module with enclosure and one USB cable.

If you have any technical questions regarding this item, please go to the Quark-elec website and leave your question on the forum, it's the quickest way to get a reply.