User Manual for AIT2500 V1.01
TEL + 44 1179 554474 www.digitalyacht.co.uk
Installation Step 5
– N2Net (NMEA2000)
•
The AIT2500
also has an N2Net connection which is Digital Yacht’s NMEA2000 compliant interface. To connect
to other NMEA2000 products, simply find or add a spare NMEA2000 “T” piece on the existing NMEA2000
network and connect the AIT2500
N2Net connector to the “T” piece.
•
The N2Net cable is just over 1m long and is terminated in an NMEA2000 Micro Male Connector.
•
The AIT2500 does not take any power from the NMEA2000 network
•
The AIT2500 outputs AIS and GPS data on to the network. All currently (Dec 2018) defined AIS PGNs are
transmitted including those for Class B+ Static Data, AIS Sarts and AIS AtoNs, which some chart plotters do not
support.
•
The AIT2500 does not convert any of the NMEA0183 data that it receives in to NMEA2000 data or vice versa.
Installation Step 6
– USB Interface
•
The USB cable of the AIT2500 is designed to be used for configuring/programming the unit during installation and
not for permanent connection to the boat’s Navigation PC.
•
If you intend to permanently connect the AIT2500 to a PC or MAC via a USB interface, we recommend that you
use our NMEA to USB adaptor cable which will protect the AIT2500 from voltage differences, noise and electrical
spikes that can occur in marine installations.
•
When connected to a PC or MAC via the USB cable, the AIT2500 will only get enough power from the computer
to power the microprocessor and the AIS receiver. This allows you to program the MMSI number and other static
data at home or in the office prior to installation. The AIT2500 will not transmit or get a valid GPS position fix
when only powered from the USB interface and the RED Status LED will always be lit when powered from the
USB cable.
•
If you need to extend the USB cable, please use a USB extension cable that is no more than 4m in length. The
maximum length of USB cable without the use of a powered extender cable or Hub is 5m.
•
Please do not plug in the USB cable of the AIT2500 to your PC at this stage. We will cover this in section 4 -
Configuration.
Installation Step 7
– Remote Switch
•
To connect a remote “Silent” switch that allows you to turn on/off the transmission of your own vessels position
(good etiquette when moored or in congested but safe conditions), you will need a conventional toggle type
switch (SPST), connected between the White and Blue wires.
•
This can be mounted anywhere on the boat, thus allowing you to mount the AIT2500 below deck but having a
switch in the cockpit or wheel house to control the Silent Mode operation.
•
When the remote “Silent” switch is ON (closed) the AIT2500 will be in Silent mode (not transmitting) and when the
switch is OFF (open) the AIT2500 will be in normal transmitting mode.
Installation Step 8
– Power Up
•
Turn on the 12V or 24v power to the AIT2500
•
Verify that the green LED illuminates for a short period and then all four LED indicators on the front of the unit
flash once, followed by illumination of the amber and red LED’s.
•
Installation is now complete. The AIT2500 needs to be configured using the proAIS2 software
– see next section.
