NGW-1

NMEA 2000® Gateway

Hook up to NMEA 2000 whilst keeping currently installed NMEA 0183 devices...

 

 

 

 

What are the differences between the NGW-1 variants?

All NGW-1 variants have a standard NMEA 2000 drop cable and connector (DeviceNet M12, A polarised, male Micro C) for direct connection to an NMEA 2000 backbone T-piece or adapter cable for manufacturer proprietary networks.

All ISO-Drive variants (NGW-1-ISO, NGW-1-ISO-AIS and NGW-1-STNG) have stripped and tinned wires at the end of a high quality 1.5 metre cable to accommodate varying installation requirements to an NMEA Talker and/or NMEA Listener.

All USB variants (NGW-1-USB and NGW-1-USB-AIS) have a 1.5 metre standard USB cable with a USB A plug on the end for easy connection to a computer or USB hub.

The NGW-1-ISO is the standard option applicable to the majority of customers. The NGW-1 Conversion List on the download page details which conversions are supported (and those that are not).

The NGW-1-ISO-AIS is an NGW-1-ISO pre-configured for use with an AIS device. The NGW-1-AIS Conversion List on the download page details which conversions are supported (and those that are not).

The NGW-1-USB is the option typically used with PC software that only understands NMEA 0183 (i.e. it is not compatible with the Actisense NGT-1). The NGW-1 Conversion List on the download page details which conversions are supported (and those that are not).

The NGW-1-USB-AIS is an NGW-1-USB pre-configured for use with PC software that only understands NMEA 0183 and needs or supplies AIS information. The NGW-1-AIS Conversion List on the download page details which conversions are supported (and those that are not).

The NGW-1-STNG is the Raymarine SeaTalkNG option: The kit includes an NGW-1-ISO and a SeaTalkNG to NMEA 2000 adapter cable (STNG-A06045) allowing the NGW-1 to be connected directly to the Raymarine SeaTalkNG network - providing seamless integration with Raymarine products. The NGW-1 Conversion List on the download page details which conversions are supported (and those that are not).

As of April 2015, a SeaTalkNG to NMEA 2000 adapter cable (STNG-A06045) can be purchased with an NGW-1-ISO, NGW-1-ISO-AIS, NGW-1-USB or NGW-1-USB-AIS to allow direct connection toa Raymarine SeaTalkNG network

How is the NGW-1 Powered?

All ISO-Drive variants (NGW-1-ISO, NGW-1-ISO-AIS and NGW-1-STNG) are completely powered from the NMEA 2000 network and have an NMEA 2000 LEN of 1 (50 mA or less). Once connected to a powered and terminated NMEA 2000 network, the NGW-1-ISO LEDs will flash.

All USB variants (NGW-1-USB and NGW-1-USB-AIS) takes most of their power from the USB connection and also have an NMEA 2000 LEN of 1 (50 mA or less). The LEDs will not flash until the USB drivers have been successfully installed (allowing the OS to enable USB power).

What conversions are supported by the NGW-1?

The NGW-1 Conversion Lists are available on the download page – there is one list for the standard firmware variants (NGW-1-ISO, NGW-1-USB and NGW-1-STNG) and one list for the AIS firmware variants (NGW-1-ISO-AIS and NGW-1-USB-AIS). Each Conversion List details which conversions are supported by the specified NGW-1 firmware version. Updating the NGW-1 between the standard firmware and AIS firmware (using the ActiPatch program) switches between the two Conversion Lists. The latest NGW-1 firmware can be found on the firmware page.
New conversions are being developed - Actisense welcomes suggestions and requests for future updates.

Can I change/update the firmware in my NGW-1?

To update the firmware the NGW-1’s NMEA 0183 port has to be temporarily connected to a PC. Please refer to the NGW-1 User Manual or the “How do I connect my NGW-1 to a PC” FAQ for full details.

For ISO-Drive variants, if the PC does not have an RS232 port a USB to Serial converter cable will be required.

The latest NGW-1 firmware can be found on the firmware page. Please ensure you download the firmware that contains the correct product code and, if the AIS firmware is required, contains an “AIS” suffix. For example, if you wish to install the AIS firmware on an NGW-1-USB, the firmware version you require is titled “NGW-1-USB-AIS v2.420 ActiPatch Setup.exe.

When configuring or updating an ISO-Drive variant that is not connected to an NMEA 2000 network, an alternative NGW-1 power source is required: 12/24 volt power can be connected directly to the “Net S” and “Net C” terminals inside the NGW-1-ISO case.

How do I connect my ISO-Drive variant NGW-1 to a PC?

When connecting an NGW-1 with an ISO-Drive to a PC there are three options:

  1. Wire a D-type 9-pin connector and cable to your NGW-1’s NMEA 0183 (ISO-Drive) port - you can connect that directly to the NGW-1 cable terminals inside the case if that is more convenient. Plug that cable in to a standard RS232 port, or a “USB to Serial” adapter cable if your computer does not have an RS232 port. Please refer to “Figure 2” on page 7 of the NGW-1 User Manual.
  2. You might want to consider theActisense DB9-F and USB-1 products if do not have cables already.
  3. For a quick and easy connection, use theActisense USG-1 for direct wiring to the NGW-1’s cable terminals whilst keeping your PC safe with 1500 volts of isolation. You can use the USG-1 as a safe way to connect any NMEA 0183 signal to your PC so it is ideal as an “NMEA 0183 diagnostic tool” when used with our freely available NMEA Reader software.

If the NGW-1 is not connected to an NMEA 2000 network, an alternative NGW-1 power source is required: 12/24 volt power can be connected directly to the “Net S” and “Net C” terminals inside the NGW-1-ISO case.

How do I use ActiPatch?

With the NGW-1 connected to your PC, select the correct COM port for your NGW-1 from the drop down menu in the Actipatch. 

Click on the ‘Program’ button when it goes green and you will see the progress bar indicating the installation of the firmware to your NGW-1.   

When the installation is completed successfully, the ‘Patch ID’ box and ‘Device ID’ box will contain identical information.

What versions of NMEA 0183 are supported?

The NGW-1 supports all versions of NMEA 0183. Devices that use RS232 or RS422 voltage levels are accepted and connections that use ground or differential connections are suitable. The NGW-1 automatically adapts to the electrical requirements of the connected devices.

Is there isolation between all the ports?

The NMEA 2000 network is Galvanically isolated from the NMEA 0183 side of the NGW-1. The non-USB variants are also isolated between the NMEA Talker and the NMEA Listener.

Can I connect a different Listener and Talker to the NGW-1's NMEA 0183 port?

It is possible to connect an NMEA Listener to the NGW-1 Talker port and a different NMEA Talker to the NGW-1 Listener port. Note that both NMEA 0183 devices connected to the NGW-1’s NMEA 0183 port must have the same baud rate set.

Can I connect multiple Talkers to an NGW-1?

No, it is not possible to connect multiple Talkers to a NGW-1’s Listener port. (This is in accordance with the NMEA 0183 specification). You can use an NMEA multiplexer like the NDC-4 to combine multiple NMEA 0183 streams together to put into the NGW-1. Alternatively, using more than one NGW-1 is the recommended option.
Note: three NGW-1’s cost approximately the same as one NDC-4 plus one NGW-1.

Can I connect multiple Listeners to an NGW-1?

The NGW-1 talker port can drive up to 20mA. This means that potentially up to 10 NMEA Listeners can be connected to the NGW-1 output. Check the input currents of each Listener to see how many can be connected together.

Note that many NMEA Listeners do not provide isolation on their inputs. Connecting these together can cause ground loops and thus damage to the Listener ports of these devices. For safe connection of multiple Listeners our NBF-3 NMEA Buffer is recommended.

Can I set a different baud rate for the NGW-1 Listener port as is set for the NGW-1 Talker port?

No the NGW-1’s NMEA 0183 port is the same for the Listener and the Talker connections. It is not possible to set different baud rates on these connections.

Can I configure the NGW-1?

NMEA Reader contains all the currently available configuration options for the NGW-1.
In the majority of cases, configuration of an NGW-1 is not required as it communicates at the standard 4800 baud rate for NMEA 0183 devices (38400 for the AIS firmware) by default. All available conversions are enabled by default so the only conversion related configuration option is to reduce the number of conversions carried out by the NGW-1. Checking extra boxes in the PGN enable lists in NMEA Reader that weren’t initially checked will have no effect.

All available conversions being enabled on the NGW-1 should not cause conflicts as NMEA 0183 devices are usually good at recognising data that they don’t require and ignoring it. NMEA 2000 is also very good at handling data.

For full instructions on how to use NMEA Reader, please refer to the “NMEA Reader & EBL Reader User Manual Issue 1.00.pdf”.  In the manual it shows the hardware configuration option as a window, however with the latest edition of NMEA Reader it is a tab that can be selected at the bottom left side of the NMEA Reader window.
 
As a quick description: Using NMEA Reader, you can choose which PGN's are received (Rx) or transmitted (Tx) by the NGW-1. For example, turning off PGN 127251 from the “Rx PGN Enable List” will stop all ROT sentences appearing on the NMEA 0183 output of the NGW.  However, turning off PGN 128267 from the “Rx PGN Enable List” will stop both DPT and DBT sentences appearing on the NMEA 0183 side of the NGW. There is currently no way of choosing DPT or DBT, you can only get or stop both.

The “Tx PGN Enable List” works in a similar way, DBT and DPT are used to generate PGN 128267 you cannot choose data from one sentences and not the other. Please refer to the NGW-1 Conversion List document to fully understand the relationship between the NMEA 2000 PGN and the NMEA 0183 Sentences.

Only the USB variant of the NGW-1 is capable of baud rates of 115200 Baud and above. Changing the Baud rate of non USB variants to 115200 Baud or above will prevent the NGW-1 from communicating and will require assistance from Actisense tech support.

See question number 4 for details on how to connect your NGW-1 to a PC.

What is provided with the NGW-1?

All Variants:
1 x Actisense CD in sleeve (with documents and software)
1 x NGW-1 User Manual
2 x Mounting screws

Standard ISO-Drive variants (NGW-1-ISO or NGW-1-ISO-AIS):
1 x NGW-1-ISO (with 1.5 metre NMEA 0183 cable (stripped and tinned) and 1.5 metre NMEA 2000 cable & connector)
1 x Cable grommet for use with custom NMEA 0183 cables

USB variants (NGW-1-USB or NGW-1-USB-AIS):
1 x NGW-1-USB (with 1.5 metre USB cable (USB A plug) and 1.5 metre NMEA 2000 cable & connector)

SeaTalkNG ISO-Drive variant (NGW-1-STNG):
1 x NGW-1-ISO (with 1.5 metre NMEA 0183 cable (stripped and tinned) and 1.5 metre NMEA 2000 cable & connector)
1 x SeaTalkNG to NMEA 2000 adapter cable (STNG-A06045)

end faq

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