Installation manual

NMEA 2000 PC Interface - NGT-1-USB
Page 9© 2009 Active Research Limited
Troubleshooting guide
This guide will concentrate on all relevant troubleshooting issues above simple cable connection faults. Therefore, the
cables between the NGT-1-USB hardware and any other devices should be checked as a matter of course, before
continuing with this guide.
Status LEDs
The NGT-1-USB hardware has two bright LEDs that can be seen through the case to indicate when data is received
from either the USB device or NMEA 2000 network connection. It is an important point to note that these two LEDs can
only show when their respective data is RECEIVED; it is not possible to show both transmit and receive simultaneously
on a single colour LED.
These LEDs can be used to debug potential problems. If both an NMEA 2000 ‘talker’ and a ‘listener’ are connected, it is
possible to analyse which is working by disconnecting one of them or by stopping the PC software from sending data.
Sequence Description
NMEA 2000 LED does not
ash when the data is received
from the NMEA 2000 network
Check that the NGT-1-USB is connected to the NMEA 2000 network, that the NMEA
2000 network is operational, and that the required PGN messages are selected for
transfer by using the NGT Conguration Tool.
USB LED does not ash when
the USB data is received
Check that the NGT-1-USB is connected to a PC USB port, that the device
is recognised in the Windows Control Panel with the correct COM port (refer to
USB Conguration section in USB Install User Manual) and that the required
messages are selected to be transferred by using the NGT Conguration Tool.
Both LEDs ash together,
once every 10 seconds
Indicates that the NGT-1-USB is powered but no data is received from either
connection. If data should be being transferred through then check that the required
PGN messages are selected by using the NGT Conguration Tool.
If the error persists, please contact Actisense support to help trace the issue
before considering the return of the product. If Actisense support concludes
that the NGT-1-USB unit should be returned to Actisense (refer to the Company
Information section), a Returns Number will be issued by the support engineer.
The Returns Number must be clearly visible on both the external packaging
and any documentation returned with the product. Any returns sent without a
Returns Number will incur a delay in being processed.
Table 3 – Diagnostic LED