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© 2013 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-ISO hardware and any other devices should be checked as a matter of course, before
continuing with this guide.
Status LEDs
The NGT-1-ISO hardware has two bright LEDs that can be seen through the case to indicate when data is received
from either the serial 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
flash when the data is received
from the NMEA 2000 network
Check that the NGT-1-ISO 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 Configuration Tool
.
Serial LED does not flash
when Serial data is being
received
Check that the NGT-1-ISO is connected correctly to a PC serial port, that COM port
is working in the Windows Device Manager, is selected by the software program
and that the required messages are selected to be transferred by using the
NGT
Configuration Tool
.
Both LEDs flash together,
once every 10 seconds
Indicates that the NGT-1-ISO 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 Configuration 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-ISO unit should be returned to
Actisense
(refer to the
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
