Description
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:
- Cable Length (Feet): N/A
- 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)
Estimate shipping
Refund Policy
Easy Returns
We've taken out the hassle of returning an item so you can shop with confidence. If you need to return an item, we'll provide you with a pre-paid UPS return label that you can print at home. The cost for using the label will be calculated and deducted from your refund.
To start a return, please contact us at sales@theyachtrigger.com Items sent back to us without first requesting a return will not be accepted.
30-Day Return Policy
We have a 30-day return policy, meaning you have 30 days after receiving your item to request a return or exchange.
Eligibility for Returns
To be eligible for a return, your item must be in the same condition that you received it—unworn or unused, including tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase.
We reserve the right to refuse returns or assess additional fees at our discretion if:
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The merchandise is missing parts
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The item is not in new condition
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The return is beyond the accepted return dates
Return Shipping & Restocking Fees
Customers are responsible for return shipping.
If you request The Yacht Rigger to provide a shipping tag, the shipping cost will be deducted from your refund. No international return shipping labels will be provided.
A 3% restocking fee will apply.
No returns on final sale items.
Damages and Warranties
Please inspect your order upon receipt and contact us immediately if the item is defective, damaged, or if you received the wrong item.
Most items we sell are covered by manufacturers' warranties. If you experience difficulty with a product, please contact the appropriate manufacturer for assistance and troubleshooting help, or email us at sales@theyachtrigger.com . If your order was received via freight truck, you must notify us within 5 days.
Exceptions / Non-Returnable Items
Certain types of items cannot be returned, such as custom products and special orders. This includes cut line, wire, rope, and similar items that are customized to length. We also do not accept returns for hazardous materials, flammable liquids, or gases. Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to request a return of the item you have. Once the return is accepted, you can make a separate purchase for the new item to ensure it is in stock.
European Union 14-Day Cooling Off Period
If the merchandise is being shipped to the European Union, you have the right to cancel or return your order within 14 days, for any reason and without justification. As above, your item must be in the same condition that you received it—unworn or unused, with tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return and inform you if the refund was approved. When processing a refund, no additional transaction fee is incurred; however, the original credit card transaction fee is not refunded.
If approved, you’ll automatically be refunded to your original payment method within 10 business days. Please allow some time for your bank or credit card company to process and post the refund. If more than 15 business days have passed since we’ve approved your return, please contact us at sales@theyachtrigger.com
Return Policy Abuse
We reserve the right to refuse service to anyone suspected of abusing any policy of The Yacht Rigger.





