Description
Safely connect one Talker to six Listeners with full isolation.
PRO-NBF-1 Type Approved NMEA Buffer
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Safely connect one Talker to six Listeners with full isolation
The Type approved NMEA Buffer PRO-NBF-1 Buffer isolates and buffers NMEA 0183 data, with the power to drive multiple devices.
Able to distribute up to six identical, amplified streams of data from one source the NMEA signals are buffered to ensure that each Listener receives the data at the required voltage levels, providing consistent data quality.
Isolation on the input and outputs ensures the protection of the source Talker device and Listener devices.
Type Approved NMEA Buffer
£233.73
Estimated delivery dates: Mon 6 Jul, 2026 - Wed 8 Jul, 2026
Type approved NMEA Buffer
In stock
Additional information
| Weight | 0.45 kg |
|---|---|
| Dimensions | 23.5 × 15.5 × 6.5 cm |
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5 year guarantee
across entire Actisense range as standard
The NMEA Buffer has ISO-Drive™ technology on the outputs and OPTO-isolation on the input which enables you to connect the NMEA 0183 Buffer with complete peace of mind.
The stainless steel housing makes the device rugged, sturdy and gives increased durability. The metal case also acts as an RF Shield making the device an ideal addition to commercial installations.
To make installation quick and simple the PRO-NBF-1 features 2-part pluggable connectors that allow use of screw terminals*, and a professional DIN Rail mounting system (DIN Rail not included). The device can also be mounted directly to the bulkhead.
The optional strain relief brackets can be provided to ensure reliable professional cable management.
Helpful LEDs indicate power, input, and output operation.
FEATURES
- One Opto-Isolated Input
- Six ISO-Drive™ outputs
- Outputs automatically track the input baud rate
- RS-232, RS-422 and RS-485 Listener compatible
BENEFITS
- ISO-Drive separates the Listener from the Talker to protect both the PRO-NBF-1 and each connected device
- Wide compatibility meaning simplified installation
- Simple installation saves time and money and provides peace of mind
- Type Approved (RINA)
Ordering Information
(Part number/s)
- PRO-NBF-1
Buffers are typically used to distribute an instruments data into multiple connected listeners. Connecting multiple listeners directly to a talker can be problematic, including current drive issues and wiring issues. Using a buffer removes these issues, and allows for safe, strong distribution of your data.
An example of this could be on a commercial vessel with one GPS and multiple NMEA 0183 displays or 4 display ECDIS. To get all of these displays to receive your GPS data, you can use a buffer to output to each display, whilst being fully isolated.
With the PRO-NBF-1, the data is not checked for validity as the device has no intelligence, so whatever is input is also output. For scenarios where ‘invalid’ or incomplete data needs to be sent, this product is ideal. Proprietary messages also using certain formats and identifiers can be sent using this device.
| Power Supply | |
| Input Supply Voltage | 9 to 35V DC |
| Input Supply Current | 150mA max @ 12V DC (all outputs @ full drive into 100Ω loads) |
| Input Protection | Continuous reverse polarity and ESD protection |
| Power Indicator | LED, Blue - Indicates unit is functioning correctly |
| Input Supply Connector | Pluggable 2 way screw terminal, 5.08mm pitch (12 to 30 AWG) |
| NMEA 0183 Port - Listener & Talkers | |
| Number of Listener / Input Ports | One isolated NMEA 0183 Listener |
| Number of Talker / Output Ports | Six isolated NMEA 0183 Talkers |
| Compatibility | Fully NMEA 0183, RS422 & RS232 compatible. RS485 Listener compatible |
| Speed / baud rate | 4800 to 115200 bps |
| Talker Output Voltage drive | >= 2.2V (differential) into 100Ω |
| Talker Output Current drive | 20mA max. |
| Talker Output Protection | Short circuit and ESD |
| Talker Data Indicator | LED, Orange (Flashes at data rate) |
| Listener Input Voltage Tolerance | -15V to +15V continuous, -35V to +35V short term (<1 second) |
| Listener Input Protection | Current limited, overdrive protection to 40V DC and ESD protection |
| Listener Data Indicator | LED, green (Flashes to indicate valid input) |
| Connectors | Pluggable 2/3-way screw terminals, 5.08mm pitch (12 to 30 AWG) |
| Isolation | |
| NMEA 0183 Listener | OPTO-Isolated, Hi-Pot tested to 1000V |
| NMEA 0183 Talker | Uses IsoDrive™, Hi-Pot tested to 1000V |
| Mechanical | |
| Housing Material | 316 Stainless Steel |
| Dimensions | 139mm (W) x 129mm (H) x 26.5mm (D) |
| Weight | 335g |
| Mounting | Bulkhead mount or DIN rail mount (DIN kit 1) |
| Approvals and Certifications | |
| EMC | IEC 60945:2002-08, DNVGL-CG-0339:2019 & IACS UR E10 Rev7 |
| Compass safe distance | 600mm |
| Type Approval Certificate | RINA |
| Operating Temperature | -25 to +70°C |
| Storage Temperature | -40 to +85°C |
| Maximum Relative Humidity (RH) | 95% @ 55°C |
| Environmental Protection | IP40 |
| Guarantee | 5 Years |
- Certified to unified requirements of IACS E10 / IEC 60945
- Pluggable 2/3-way screw terminals, 5.08mm
pitch - Compatible with RS422, RS232 and RS485 connections
- Up to 115200 baud
- EN 60945:2002 (Fourth Edition – 2002),
DNVGL-CG-0339:2019
Download the full PRO-NBF-1 datasheet.
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