Product details

Description and Specifications

PRO NMEA Buffer - 1 OPTO Input, 6 ISO-Drive Outputs, Serial Port, Pluggable Screw Terminals

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 of the input and outputs ensures the protection of the source Talker device and Listener devices.

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 it 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
  • ISO-Drive separates the Listener from the Talker to protect both the PRO-NBF-1 and each connected device
  • Wide compatibility means simplified installation
  • Simple installation saves time and money and provides peace of mind
  • Type Approved (RINA)

Technical Specifications:

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

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. RS-485 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

Isolation

  • NMEA 0183 Listener - OPTO-Isolated, Hi-Pot tested to 1000V
  • NMEA 0183 Talker - Uses IsoDriveTM, Hi-Pot tested to 1000V

Mechanical

  • Housing Material - 316 Stainless Steel
  • Dimensions - 139mm (L) x 128mm (W) x 27mm (H)
  • Weight - 335g
  • Mounting - Bulkhead mount or DIN rail mount (DIN kit 1)

Approvals and Certifications

  • EMC - EN 60945:2002 (Fourth Edition – 2002), DNVGL-CG-0339:2019
  • 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

Specifications:

  • Data Interface: NMEA 0183
  • Box Dimensions: 2"H x 6"W x 10"L WT: 1 lbs
  • UPC: 5060998710546

Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)
Shipping, Warranty & Returns

Shipping: "In-stock items ordered by 4:00 PM EST ship the same day. High-value marine electronics are shipped insured and may require signature confirmation."

Warranty: "Salina Vita is an Authorized Dealer. Your purchase includes full manufacturer warranty support. Proof of purchase is retained for your records, and any warranty service is handled directly through the manufacturer."

Returns: "Eligible uninstalled merchandise in its original, factory-sealed packaging may be returned within 30 days of receipt. All returns require an RMA number and may be subject to a restocking fee of up to 15%. Electronics that have been installed or powered on are non-returnable."

Compatibility & Fitment

Marine electronics are highly vessel-specific. If you are unsure if this integrates with your current helm, please contact our concierge team for a fitment review prior to ordering.

FAQs

Please read our FAQs page to find out more.

When will my order ship?

For in-stock items, orders placed by 4:00 PM EST are eligible to ship the same day. If any item in the order is not currently in stock, shipment timing will depend on availability.

What is your return window?

Eligible merchandise may be returned within 30 days from the date of receipt. All returns require a Return Merchandise Authorization (RMA) number before anything is sent back. For the smoothest experience, we ask customers to contact Salina Vita first so we can coordinate the request properly. Returned merchandise must be complete, in its original packaging, and in resalable condition. Items that arrive incomplete, improperly packed, or not suitable for resale may not qualify for return approval.

Are restocking fees possible?

Yes. Approved returns may be subject to a restocking fee of up to 15%. Non-stock items may not be returned. In addition, opened or unsealed DVDs, CDs, and cartography products are non-returnable unless defective. If the product falls into CWR’s excluded media categories—such as opened or unsealed cartography, DVDs, or CDs—it is not returnable unless defective.

If my unit needs warranty service, should I send it back to Salina Vita?

No. Units requiring service, whether under warranty or otherwise, should be returned directly to the appropriate manufacturer, not to Salina Vita. We are always happy to help guide you to the correct manufacturer support path. Absolutely. While the service destination is the manufacturer, we can help you identify the proper support channel and make the process feel more straightforward and well-managed. Units that require service themselves, however, should go directly to the manufacturer under CWR’s policy.

I still have more Questions, can we contact you?

At Salina Vita, we believe premium marine commerce should feel measured, transparent, and reassuring. If you have a question about a shipment, return eligibility, or manufacturer service, contact us before taking the next step and we will guide you with the discretion and clarity your vessel deserves.

Didn’t find your answer?

Don't hestitate to contact us