®
NBE100
Network Bus Extender
User’s Manual
Revision 1.0
Copyright ©2011 Maretron, LLP All Rights Reserved
Maretron, LLP
9014 N. 23rd Ave #10
Phoenix, AZ 85021-7850
Maretron Manual Part #: M003006
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Table of Contents
1 Introduction ...........................................................................................................................1
1.1 Firmware Revision.................................................................................................... 1
1.2 NBE100 Features..................................................................................................... 1
1.3 NBE100 Accessories................................................................................................ 1
1.4 Quick Install.............................................................................................................. 2
2 Installation.............................................................................................................................2
2.1 Unpacking the Box ................................................................................................... 2
2.2 Choosing a Mounting Location................................................................................. 2
2.3 Mounting the NBE100 .............................................................................................. 3
2.4 Connecting the NBE100........................................................................................... 3
2.4.1 NMEA 2000® Connection............................................................................... 3
2.4.2 Checking Connections................................................................................... 5
2.5 Configuring the NBE100........................................................................................... 5
2.5.1 Device Instance ............................................................................................. 5
2.5.2 Device Label.................................................................................................. 6
2.5.3 Advanced Configuration…............................................................................. 6
2.5.3.1 Restore Factory Defaults ................................................................. 6
4 Troubleshooting ....................................................................................................................6
5 Technical Specifications........................................................................................................7
6 Technical Support .................................................................................................................8
7 Installation Template .............................................................................................................9
8 Maretron (2 Year) Limited Warranty....................................................................................10
Table of Figures
Figure 2 – NMEA 2000® Connector Face Views ....................................................................... 4
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1 Introduction
Congratulations on your purchase of the Maretron Network Bus Extender. Maretron has
designed and built your NBE100 to the highest standards for years of dependable and
accurate service.
Maretron's NBE100 (Network Bus Extender) allows you to extend the maximum node count,
network trunk length and cumulative drop length of any NMEA 2000® network. The NBE100
solves bus errors and other electrical issues caused by exceeding any of these limitations and
makes design of large networks easier. NMEA 2000® networks have a maximum of 50 nodes
allowed on a single network, a maximum network trunk length of 200m and a maximum
cumulative drop length of 78m. If you have a network that exceeds any of these specifications,
you can simply disconnect the network trunk in the middle and connect the ends to the
NBE100, along with additional termination resistors. This will split the network into two
electrical segments, each of which can have up to 50 nodes, for a total of 100 nodes on the
logical network. The NBE100 will transparently route NMEA 2000® messages between the two
network segments, making them work as a single logical NMEA 2000® network. Advanced
priority-based message routing ensures that higher-priority messages are always prioritized
over lower-priority messages, enabling predictable and reliable network operation.
For exceptionally large networks, multiple NBE100’s may be used.
1.1 Firmware Revision
This manual corresponds to NBE100 firmware revision 1.0.0.
1.2 NBE100 Features
The Maretron NBE100 has the following features.
• Segments a single large NMEA 2000® network into two smaller electrical segments.
• Allows you to exceed the 50 node limitation on a NMEA 2000® network.
• Allows you to exceed the 200m trunk length limitation on a NMEA 2000® network.
• Allows you to exceed the 78m cumulative drop length limitation on a NMEA 2000®
networks.
• Allows all NMEA 2000 devices to operate as if they were still on a single NMEA 2000®
network.
• Priority-based message routing ensures higher-priority messages get through the bus
extender first.
• Optically isolates network segments, increasing signal integrity and network reliability.
1.3 NBE100 Accessories
Maretron offers the following accessories for the NBE100:
• None
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NBE100 User's Manual
1.4 Quick Install
Installing the Maretron NBE100 involves the following five steps. Please refer to the individual
sections for additional details.
2 Installation
2.1 Unpacking the Box
When unpacking the box containing the Maretron NBE100, you should find the following items:
1 – NBE100 – Network Bus Extender
1 – Parts Bag containing 4 Stainless Steel Mounting Screws
1 – NBE100 User’s Manual
1 – Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
2.2 Choosing a Mounting Location
Please consider the following when choosing a mounting location.
1. The NBE100 is waterproof, so it can be mounted in a damp or dry location.
2. The orientation is not important, so the NBE100 can be mounted on a horizontal deck,
vertical bulkhead, or upside down if desired.
3. The NBE100 is temperature-rated to 55°C (130°F), so it should be mounted away from
engines or engine rooms where the operating temperature exceeds the specified limit.
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2.3 Mounting the NBE100
Attach the NBE100 securely to the vessel using the included stainless steel mounting screws
containing methacrylate ester, such as Loctite Red (271), as they will cause stress cracking of
the plastic enclosure.
Figure 1 – Mounting the NBE100
2.4 Connecting the NBE100
The NBE100 requires one type of electrical connection: the NMEA 2000® connections (refer to
2.4.1 NMEA 2000® Connection
The NBE100 has two NMEA 2000® connectors. The NMEA 2000® connectors can be found on
either end of the enclosure.
the NBE100 to an NMEA 2000® network using a Maretron NMEA 2000® cable (or compatible
cable) by connecting the female end of the cable to the NBE100 (note the key on the male
connector and keyway on the female connector). Be sure the cable is connected securely and
that the collar on the cable connector is tightened firmly. Connect the other end of the cable
(male) to the NMEA 2000® network in the same manner. The NBE100 is designed such that
you can plug or unplug it from an NMEA 2000® network while the power to the network is
connected or disconnected. Please follow recommended practices for installing NMEA 2000®
network products.
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Figure 2 – NMEA 2000® Connector Face Views
The NBE100 is installed on an NMEA 2000® network between the two sections that you wish
to physically isolate. There is no electrical connection through the NBE100, so you must
ensure that each of the two NMEA 2000® networks connected to the NBE100 must have
separate power sources and two termination resistors. This means that if you use an NBE100
to split an existing network into two separate networks, you must provide one additional power
connection and two additional termination resistors (one for each side of the NBE100).
The two NMEA 2000® connectors are labeled “N2K PORT A(PWR)” and “N2K PORT B”.
Logically, these connectors are identical; that is, you can connect the NBE100 between two
networks in either way and it will function identically. However, the NBE100 sources power
only from the connector marked “N2K PORT A(PWR)”. It uses no power from the connector
labeled “N2K PORT B”.
For exceptionally large networks, multiple NBE100’s may be used to segment the network into
more than two segments. Each segment must have its power connection and two termination
resistors.
.
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Figure 3 – NBE100 Connection Diagram
2.4.2 Checking Connections
Once the NMEA 2000® connections to the NBE100 have been completed, check to see that
information is being properly transmitted by using an appropriate NMEA 2000® display to
observe a sensor on the opposite side of the NBE100. If you don’t see data from that sensor,
2.5 Configuring the NBE100
The NBE100 will function on the NMEA 2000 network as it is shipped from the factory; no user
configuration is required. However, it may be desirable to perform optional configuration. There
are several configurable items within the NBE100, which are detailed in the remainder of this
section.
You configure the NBE100 using a Maretron DSM250 display or other NMEA 2000® display
unit that is capable of configuring the NBE100. Please refer to the Maretron DSM250 User’s
Manual for details.
2.5.1 Device Instance
NMEA 2000® provides a unique device instance for each device on a vessel. This value should
be programmed in each NBE100 so that each NBE100 is associated with a unique device
instance number. The default instance number is 0, which is used to indicate the first NBE100
that is hooked to the network. Subsequent NBE100’s connected to the network would be
numbered 1, 2, and so on.
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2.5.2 Device Label
Program this parameter with a text string which identifies this particular NBE100, to allow you
to easily distinguish it from other NBE100’s on the network.
2.5.3 Advanced Configuration…
Certain parameters do not normally need to be set in order for normal operation, but are
included in an advanced configuration section for use in special situations.
2.5.3.1 Restore Factory Defaults
Selecting this configuration option causes all stored parameters in the NBE100 to be reset to
the values they contained when the unit was manufactured.
3 Maintenance
Regular maintenance is important to ensure continued proper operation of the Maretron
NBE100. Perform the following tasks periodically:
• Clean the unit with a soft cloth. Do not use chemical cleaners as they may remove
paint or markings or may corrode the NBE100 enclosure or seals. Do not use any
cleaners containing acetone, as they will deteriorate the plastic enclosure.
• Ensure that the unit is mounted securely and cannot be moved relative to the mounting
surface. If the unit is loose, tighten the mounting screws.
• Check the security of the cables connected to the NMEA 2000® connector, and tighten if
necessary.
4 Troubleshooting
If you notice unexpected operation of the Maretron NBE100, follow the troubleshooting
procedures in this section to remedy simple problems. If these steps do not solve your
information).
Symptom
Troubleshooting Procedure
No devices on one side
of the NBE100 are
visible from a display
connected to the other
side.
• Ensure that the NBE100 is properly connected to the NMEA
2000® network segments.
• Ensure that both NMEA 2000 network segments have
power.
• Ensure that both NMEA 2000 network segments have two
termination resistors fitted.
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5 Technical Specifications
As Maretron is constantly improving its products, all specifications are subject to change
without notice. Maretron products are designed to be accurate and reliable; however, they
should be used only as aids to navigation and not as a replacement for traditional navigation
aids and techniques.
Certifications
Parameter
Comment
NMEA 2000® Standard
Level A+
Maritime Navigation and Radiocommunication Equipment & Systems
Maritime Navigation and Radiocommunication Equipment & Systems
FCC and CE Mark
IEC 61162-3
IEC 60945
Electromagnetic Compatibility
NMEA 2000® Parameter Group Numbers (PGNs)
Description
Response to Requested
PGNs
PGN #
PGN Name
Default Rate
126464 PGN List (Transmit and Receive)
126996 Product Information
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
126998 Configuration Information
059392 ISO Acknowledge
Protocol PGNs
059904 ISO Request
060928 ISO Address Claim
065240 ISO Address Command
126208 NMEA Request/Command/Acknowledge
Maretron Proprietary PGN’s 126720 Configuration
Electrical
Parameter
Value
Comment
Operating Voltage
9 to 16 Volts
DC Voltage
Power Consumption
<150mA
3
Average Current Drain
Load Equivalence Number (LEN)
Reverse Battery Protection
Load Dump Protection
NMEA 2000® Spec. (1LEN = 50 mA)
Indefinitely
Yes
Yes
Energy Rated per SAE J1113
Mechanical
Parameter
Size
Value
Comment
Including Flanges for Mounting
3.11” x 3.46” x 1.38”
(79mm x 88mm x 35mm)
8 oz. (227 g)
Weight
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NBE100 User's Manual
Environmental
Parameter
Value
IEC 60945 Classification
Degree of Protection
Operating Temperature
Storage Temperature
Relative Humidity
Vibration
Exposed
IP67
-25°C to 55°C
-40°C to 70°C
93%RH @40° per IEC60945-8.2
2-13.2Hz @ ±1mm, 13.2-100Hz @ 7m/s2 per IEC 60945-8.7
12.5mm Nozzle @ 100liters/min from 3m for 30min per IEC 60945-8.8
Ultraviolet B, A, Visible, and Infrared per IEC 60945-8.10
Rain and Spray
Solar Radiation
Corrosion (Salt Mist)
4 times 7days @ 40°C, 95%RH after 2 hour Salt Spray Per IEC 60945-8.12
Conducted and Radiated Emission per IEC 60945-9
Conducted, Radiated, Supply, and ESD per IEC 60945-10
Dangerous Voltage, Electromagnetic Radio Frequency per IEC 60945-12
Electromagnetic Emission
Electromagnetic Immunity
Safety Precautions
6 Technical Support
If you require technical support for Maretron products, you can reach us in any of the following
ways:
Telephone: 1-866-550-9100
Fax: 1-602-861-1777
E-mail: [email protected]
Mail: Maretron, LLC
Attn: Technical Support
9014 N. 23rd Ave Suite 10
Phoenix, AZ 85021 USA
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7 Installation Template
Please check the dimensions before using the following diagram as a template for drilling the
mounting holes because the printing process may have distorted the dimensions.
Figure 4 – Mounting Surface Template
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NBE100 User's Manual
8 Maretron (2 Year) Limited Warranty
Maretron warrants the NBE100 to be free from defects in materials and workmanship for two (2) years from the
date of original purchase. If within the applicable period any such products shall be proved to Maretron’s
satisfaction to fail to meet the above limited warranty, such products shall be repaired or replaced at Maretron’s
option. Purchaser's exclusive remedy and Maretron’s sole obligation hereunder, provided product is returned
pursuant to the return requirements below, shall be limited to the repair or replacement, at Maretron’s option, of
any product not meeting the above limited warranty and which is returned to Maretron; or if Maretron is unable to
deliver a replacement that is free from defects in materials or workmanship, Purchaser’s payment for such
product will be refunded. Maretron assumes no liability whatsoever for expenses of removing any defective
product or part or for installing the repaired product or part or a replacement therefore or for any loss or damage
to equipment in connection with which Maretron’s products or parts shall be used. With respect to products not
manufactured by Maretron, Maretron’s warranty obligation shall in all respects conform to and be limited to the
warranty actually extended to Maretron by its supplier. The foregoing warranties shall not apply with respect to
products subjected to negligence, misuse, misapplication, accident, damages by circumstances beyond
Maretron’s control, to improper installation, operation, maintenance, or storage, or to other than normal use or
service.
THE FOREGOING WARRANTIES ARE EXPRESSLY IN LIEU OF AND EXCLUDES ALL OTHER EXPRESS OR
IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE.
Statements made by any person, including representatives of Maretron, which are inconsistent or in conflict with
the terms of this Limited Warranty, shall not be binding upon Maretron unless reduced to writing and approved by
an officer of Maretron.
IN NO CASE WILL MARETRON BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, DAMAGES
FOR LOSS OF USE, LOSS OF ANTICIPATED PROFITS OR SAVINGS, OR ANY OTHER LOSS INCURRED
BECAUSE OF INTERRUPTION OF SERVICE. IN NO EVENT SHALL MARETRON’S AGGREGATE LIABILITY
EXCEED THE PURCHASE PRICE OF THE PRODUCT(S) INVOLVED. MARETRON SHALL NOT BE SUBJECT
TO ANY OTHER OBLIGATIONS OR LIABILITIES, WHETHER ARISING OUT OF BREACH OF CONTRACT OR
WARRANTY, TORT (INCLUDING NEGLIGENCE), OR OTHER THEORIES OF LAW WITH RESPECT TO
PRODUCTS SOLD OR SERVICES RENDERED BY MARETRON, OR ANY UNDERTAKINGS, ACTS OR
OMISSIONS RELATING THERETO.
Maretron does not warrant that the functions contained in any software programs or products will meet
purchaser’s requirements or that the operation of the software programs or products will be uninterrupted or error
free. Purchaser assumes responsibility for the selection of the software programs or products to achieve the
intended results, and for the installation, use and results obtained from said programs or products. No
specifications, samples, descriptions, or illustrations provided Maretron to Purchaser, whether directly, in trade
literature, brochures or other documentation shall be construed as warranties of any kind, and any failure to conform
with such specifications, samples, descriptions, or illustrations shall not constitute any breach of Maretron’s limited
warranty.
Warranty Return Procedure:
To apply for warranty claims, contact Maretron or one of its dealers to describe the problem and determine the
appropriate course of action. If a return is necessary, place the product in its original packaging together with
proof of purchase and send to an Authorized Maretron Service Location. You are responsible for all shipping and
insurance charges. Maretron will return the replaced or repaired product with all shipping and handling prepaid
except for requests requiring expedited shipping (i.e. overnight shipments). Failure to follow this warranty return
procedure could result in the product’s warranty becoming null and void.
Maretron reserves the right to modify or replace, at its sole discretion, without prior notification, the warranty listed
above. To obtain a copy of the then current warranty policy, please go to the following web page:
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