NMEA, simple really.

NMEA is an acronym for the National Marine Electronics Association.

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Question often asked: What GNSS Receiver will work with my Seafloor solutions. GNSS receivers broadcasting a NMEA stream connect and operate with our echosounders.

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Next Question: What is a NMEA Stream??– Well, here you go - A combined electrical and data specification used for communication between various marine electronics devices. YOUR LINK >?It facilitates communication among instruments such as echo sounders, sonars, anemometers, gyrocompasses, autopilots, and GPS receivers.

What Exactly Is GPS NMEA Data? - GPS World

Here are some key details concerning NMEA:

NMEA is an acronym for the National Marine Electronics Association.

1.????? Purpose and Control:

o?? NMEA 0183 has been defined and is controlled by the?National Marine Electronics Association (NMEA).

o?? It replaces the earlier NMEA 0180 and NMEA 0182 standards.

o?? While it is still prevalent in commercial shipping, in leisure marine applications, it is gradually being phased out in favor of the newer?NMEA 2000?standard1.

2.????? Electrical Standard:

o?? NMEA 0183 uses the?EIA-422?(also known as RS-422) electrical standard.

o?? Most hardware with NMEA 0183 outputs can also drive a single EIA-232 port.

o?? Although the standard calls for isolated inputs and outputs, some hardware does not adhere to this requirement.

3.????? Communication Protocol:

o?? NMEA 0183 employs a simple?ASCII-based serial communications protocol.

o?? Data is transmitted in?sentences?from a “talker” to multiple “listeners.”

o?? Intermediate expanders allow a talker to converse with an unlimited number of listeners.

o?? Multiplexers enable multiple sensors to communicate with a single computer port.

o?? Each sentence type defines the contents accurately, ensuring consistent parsing by all listeners.

4.????? Message Structure:

o?? Messages (sentences) have a maximum length of?82 characters.

o?? The start character for each message can be either?“$”?(for conventional field-delimited messages) or?“!”?(for messages with special encapsulation).

o?? The next five characters identify the talker (two characters) and the message type (three characters).

o?? Data fields within the sentence are comma delimited. File extension (.csv)

text file format that uses commas to separate values (Numbers and Text)

o?? Unavailable data fields remain blank.

o?? Reserved characters have specific uses (e.g., delimiters, checksum, etc.)1.

5.????? NMEA-0183HS:

o???? Discussion is concentrated on common globally used GNSS equipment for position data transmission. A variation of the standard specifies concerning baud rates of?38,400 seen below.

6. Connect to the HydroLite Plus with your data collector/field software like you would any other Bluetooth device. Pin: SEAFLOOR.?

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o?? Then go to Control Panel>Devices and Printers - scroll down to "Unspecified" double click the HydroLite device, go to the hardware tab, and the com port that is assigned to that Bluetooth connection will be there.?

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o?? Then, go to your device settings and change the com port to match. The baud rate will be 115200.?

emailing [email protected] will expedite a focused discussion with your support needs. When emailing be sure to include pictures of your devices in need of support. explanation of field software and the use case. (Environnement the device is being deployed in.