NBF-2 NMEA BUFFER
The NBF-2 has now been replaced with our new NBF-3 buffer.
The Actisense NBF-2 galvanically opto-isolates and buffers NMEA 0183 data to drive multiple NMEA devices, such as chart plotters and radars. It is ideal for safely interfacing an on-board PC to NMEA 0183 equipment on a vessel.
5 year guarantee
across entire Actisense range as standard
The Actisense NBF-2 galvanically opto-isolates and buffers NMEA 0183 data to drive multiple NMEA devices, such as chart plotters and radars. It is ideal for safely interfacing an on-board PC to NMEA 0183 equipment on a vessel.
Designed for use with all NMEA 0183 input and output types (RS422, RS485 and RS232), the NBF-2 produces an amplified copy on each of its isolated outputs.
Galvanic isolation on the OPTO input and the ISO-Drive outputs ensures protection for both the source talker device and all listening devices, exceeding the NMEA 0183 specifications.
The NBF-2-GX version has seven glands which offer’s the option to easily seal more connections.
The NBF-2 and NBF-2-GX are invaluable in creating a safe and flexible NMEA data network.
Benefits of the NBF-2:
Note: The NBF-2 and NBF-2-GX are being phased out of production and are likely to be unavailable from mid-2014.
The NBF-3 is the latest and enhanced version of the Actisense NMEA Buffer.
- AIS compatible
- Protects connected devices
- Simple installation
- Seal more connections with the NBF-2-GX
- Can be used to isolated between two systems
| Supply voltage | 10 | 35 | V | |
| Supply current | Supply voltage 12v (Min. load, Max. load) | 44 | 100 | mA |
|
|
Supply voltage 24v (Min. load, Max. load)
|
25
|
49
|
mA
|
| Opto-isolated in | ||||
| Input voltage tolerance | Continuous operation | -15 | +15 | V |
| Short term operation (< 1 sec) | -35 | +35 | V | |
| Differential input voltage | Required level for data to be detected | 1.8 | – | V |
| Input current | – | 2 | mA | |
| Input to ground
|
Full Galvanic Opto-isolation protection
|
–
|
2500
|
V
|
| ISO-Drive out | NMEA 0183 version 1-3 & PC Serial | |||
| Output current | RS485 / RS422 / RS232 compatible | – | 22 | mA |
| Differential output voltage | 100 ohm load | 2.1 | – | V |
| Output to Ground | Full Galvanic isolation protection | – | 1500 | V |
| Output to Output
|
Full Galvanic isolation protection
|
–
|
1500
|
V
|
| General | ||||
| Baud rate | – | 115200 | bps | |
| Ambient temperature | -20 | +70 | °C | |
| Guarantee | Actisense guarantee | – | 3 | Years |
| M12 gland clamping range | Cable diameters accommodated (NBF-2-GX) | 3 | 6.5 | mm |
| M16 gland clamping range | Cable diameters accommodated | 4.5 | 10 | mm |
The Actisense NBF-2 galvanically opto-isolates and buffers NMEA 0183 data to drive multiple NMEA devices, such as chart plotters and radars. It is ideal for safely interfacing an on-board PC to NMEA 0183 equipment on a vessel.
Designed for use with all NMEA 0183 input and output types (RS422, RS485 and RS232), the NBF-2 produces an amplified copy on each of its isolated outputs.
Galvanic isolation on the OPTO input and the ISO-Drive outputs ensures protection for both the source talker device and all listening devices, exceeding the NMEA 0183 specifications.
The NBF-2-GX version has seven glands which offer’s the option to easily seal more connections.
The NBF-2 and NBF-2-GX are invaluable in creating a safe and flexible NMEA data network.
Benefits of the NBF-2:
Note: The NBF-2 and NBF-2-GX are being phased out of production and are likely to be unavailable from mid-2014.
The NBF-3 is the latest and enhanced version of the Actisense NMEA Buffer.
- AIS compatible
- Protects connected devices
- Simple installation
- Seal more connections with the NBF-2-GX
- Can be used to isolated between two systems
| Supply voltage | 10 | 35 | V | |
| Supply current | Supply voltage 12v (Min. load, Max. load) | 44 | 100 | mA |
|
|
Supply voltage 24v (Min. load, Max. load)
|
25
|
49
|
mA
|
| Opto-isolated in | ||||
| Input voltage tolerance | Continuous operation | -15 | +15 | V |
| Short term operation (< 1 sec) | -35 | +35 | V | |
| Differential input voltage | Required level for data to be detected | 1.8 | – | V |
| Input current | – | 2 | mA | |
| Input to ground
|
Full Galvanic Opto-isolation protection
|
–
|
2500
|
V
|
| ISO-Drive out | NMEA 0183 version 1-3 & PC Serial | |||
| Output current | RS485 / RS422 / RS232 compatible | – | 22 | mA |
| Differential output voltage | 100 ohm load | 2.1 | – | V |
| Output to Ground | Full Galvanic isolation protection | – | 1500 | V |
| Output to Output
|
Full Galvanic isolation protection
|
–
|
1500
|
V
|
| General | ||||
| Baud rate | – | 115200 | bps | |
| Ambient temperature | -20 | +70 | °C | |
| Guarantee | Actisense guarantee | – | 3 | Years |
| M12 gland clamping range | Cable diameters accommodated (NBF-2-GX) | 3 | 6.5 | mm |
| M16 gland clamping range | Cable diameters accommodated | 4.5 | 10 | mm |





Yes
needs more information
This is the best looking compact N2K tee with power feed. Better than building your own with individual T’s that ends up being over a foot long just to get the same amount of ports.
Thanks for this access,
Regards,
Brice
I like your products, but I’m not sure who your representatives are in Venezuela. We usually purchase them from your distributors in Miami. At Vzla Marine Group, we use them for our facilities and would like to add your products to our sales catalog.
If you are interested, please contact us.
installation manual