
NMEA Multiplexer
Flexible multiplexing, with
precongured versions for
Autoswitching or AIS operation.
The Actisense NDC-4 and NDC-4-USB allow
up to ve Opto-isolated NMEA 0183 sources to be
multiplexed into a single stream*.
Two exible ISO-Drive outputs allow two different
downstream talker baud rates to be created, ensuring
maximum system exibility.
The NDC-4 is exible and powerful enough to be the
heart of a simple system, or one of many Actisense
products in a more complex system. It provides
complete access to all NMEA 0183 data sources,
congurable lters to remove unwanted data, as well
as enabling an on-board PC to read and add to the
combined data stream.
Factory precongured versions enable the NDC-4 to
be used out of the box for AIS operation (NDC-4-AIS)
or as an Autoswitch (NDC-4-ASW).
*Four inputs on the USB version, as the USB interface
acts as the fth channel, overriding the fth OPTO
input.
• Multiplex up to ve NMEA 0183 devices
• Filter unwanted data
• Five exible versions available
• Precongured versions for AIS and Autoswitch
operation
• USB kit converts an NDC-4 to an NDC-4-USB
Five Opto inputs
Two ISO-Drive outputs
Intelligent multiplexing
software rules
Flexible NMEA ltering
Congurable baud rates
and port priorities
PC conguration software
USB PC interfacing option
AIS compatible
Up to 115200 baud data
transfer rate
Galvanic 1500V isolation
NMEA 0183 compliance
www.actisense.com
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