NDC-4 Inputs not working

NDC-4 Inputs not working

If only a single input on the NDC-4 seems to be receiving data, please check that your NDC-4 is not in autoswitch mode. When in this mode, only data from input 1 will be used. This function is designed for when using more than one source of the same type of data, like a GPS for example. When the primary source on input 1 fails, it will switch to input 2.


DO NOT USE THE USBKIT LEAD WHILE THE NDC-4 IS CONNECTED TO AN EXTERNAL BATTERY SOURCE. Doing so will create a ground loop and damage the USB chip. This damage is not covered by the guarantee.

For instructions on connecting the NDC-4 to a PC via Control Centre, and further info please visit the following article: https://www.actisense.com/knowledge-base/nmea-0183/ndc-4/ndc-4-inputs-not-working/

    • Related Articles

    • Filtering Data Using the NDC-4

      NDC Control Centre can be used to turn on and off data filtering via the 'Inclusion List' tab. For details on how this process works, visit the following article: ...

    • USB Device Not Working

      This article refers to Actisense devices that are manufactured with a USB cable (like the NGW-1-USB or NGT-1-USB) and the USB kit leads available for the NDC-4, NDC-5 and PRO range.  For issues involving connections that use a third party USB to ...

    • Saving an NDC-4 Configuration

      Sometimes a user may need to save the configuration of an NDC-4 to a file.  This configuration file can be loaded back in to NDC Control Centre.  There are a couple of reasons why this may be useful: It's a common configuration that you wish to ...

    • Configuring the NDC-4 for AIS

      We offer the NDC-4 preconfigured for AIS devices (product code: NDC-4-AIS).  This will have "OPTO IN 2" set to communicate at 38400 baud by default and filters applied to this input to prevent the data appearing at "ISO OUT 1" as the large volume of ...

    • USB Not Working NDC-4

      If you're having difficulties getting the USB connection to the NDC-4 working, or if it has been working and now isn't, there's a few useful tests you can perform before contacting our support team which can be found here:  ...