Actisense NDC 2B

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Actisense NDC-2b NMEA Combiner Multiplexer
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Actisense Marine Electronics
NDC-2 B
NMEA Combiner / Multiplexer

The Actisense™ NMEA Multiplexer / Combiner allows connection of up to four NMEA (National Marine Electronics Association) inputs to be multiplexed / combined in to one NMEA output.

This approach offers these major advantages:

enables the vessel owner complete access to all NMEA data sources, instead of the standard one device,
each NMEA input device is Opto-isolated from all other NMEA device in the system,
any NMEA data not required can be easily filtered out to reduce the total amount of NMEA data in the system.
each input and output Baud rate can be changed to match the requirements of connected devices.

Electrical spike protection is provided as standard on all four input channels using opto-isolators. This protects any connected equipment from most system faults; a particularly valuable benefit as equipment requiring the most data, such as a PC or chart plotter, is often the most expensive to repair or replace.

The NDC-2 Data Multiplexer contains highly intelligent software that manages the multiplexing and filtering operation, allowing every input to have a chance of its data reaching the combined NMEA output. Tested up to and beyond a combined 300% loading of the four inputs.

Part No.

Description (Click to view & order)

Price

pysNDC2B

Specifications

Parameter	Description	Min.	Max.	Unit
Supply voltage		8	35	V
Supply current	Supply voltage 12v (no load)	110	120	mA
	Supply voltage 24v (no load)	70	75	mA
NMEA in/out
Input voltage tolerance	Continuous operation	-15	+15	V
	Short term operation (< 1 sec)	-35	+35	V
Differential input voltage	Required level for data to be detected	1.8	-	V
Output current	RS485 / RS422 compatible	-	32	mA
Input to output protection	Full Galvanic Opto-isolation	-	2000	V
Baud rate		2.4	38.4	kbit/sec
Data propagation delay		1	100	msec
RS232 in/out
Input voltage tolerance		-15	+15	V
Input voltage threshold	Logical LOW	0.8	1.2	V
	Logical HIGH	1.7	2.8	V
Output resistance	Output voltage swing +/- 2V	300	-	ohms
Baud rate		19.2	115.2	kbit/sec
Data propagation delay		1	100	msec
General
Ambient temperature		-20	+70	°C

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