NDC-4 NMEA Multiplexer (LIMITED STOCK!)

Combine multiple sources of NMEA 0183 data into a single stream.

Flexible and powerful enough to be the heart of a simple system, or one of many Actisense products in a more complex system.

PLEASE NOTE: VERY LIMITED STOCK AVAILABLE!

Where To Buy

The Actisense NDC-4 allows up to five NMEA 0183 sources to be multiplexed into a single stream*.

Two flexible ISO-Drive outputs allow two different downstream talker baud rates to be created, ensuring maximum system flexibility.

It provides complete access to all NMEA 0183 data sources, configurable filters to remove unwanted data using NDC Control Centre, as well as enabling an on-board PC to read and add the combined data stream.

Factory preconfigured versions enable the NDC-4 to be used out of the box for AIS operation (NDC-4-AIS). An ‘autoswitch’ option is also available (NDC-4-ASW) to provide redundancy options to your NMEA 0183 network.

*Four inputs on the USB version, as the USB interface acts as the fifth channel, overriding the fifth OPTO input.

Ordering Information

(Part number/s)

NDC-4

  • Multiplex up to five NMEA 0183 devices
  • Filter unwanted data leaving you with only what you need
  • Preconfigured versions for AIS (NDC-4-AIS) and Autoswitch (NDC-4-ASW) operation
  • USB option available for simple connection to a PC (NDC-4-USB)
  • USB kit (NDC-4-USBKIT) converts standard NDC-4 to an NDC-4-USB

Supply (“BATT”)
Voltage 8-35 V
Current

 

 

 

40 mA max @ 12V DC under no load

 

Supply (USB)
Supply voltage 4.75-5.25 V
Supply current from USB (see note 1)

 

 

 

75 mA max

 

Opto-isolated Flexible Input
Input voltage between +/- Logical ‘1’/stop bit -15-0.5 V
Logical ‘0’/start bit 4-15 V
Input current Maximum is under +35v overload condition, Min @ 2.0v input level 1.6-9 mA
Differential input voltage Required level for NMEA to be detected 1.8-2 V
Galvanic isolation Between input & output 2500 V
Overdrive protection 40 V
Input Baud rate (ports 0 & 1 + USB) Configurable Baud rate 4800-115200 bps
Input Baud rate (ports 2 & 3) Configurable Baud rate 4800-57600 bps
Input Baud rate (port 4)

 

Fixed Baud rate

 

4800 bps

 

ISO-Drive Flexible Output
Output voltage between ISO Out +/A and ISO Out -/B (under no load) Logical ‘1’ -4.6 to -5 V
Logical ‘0’ 4.6-5 V
Output current at max load of 100 ohm At maximum load, differential drive voltage reduces to 2.1v 21 mA
Output short circuit current (note 2) Due to short circuit protection 50-55 mA
Galvanic isolation From Opto input and (USB) ground 1500 V
Output Baud rate (ports 0 & 1 + USB) Configurable Baud rate 4800-115200 bps
Data propagation delay

 

Under no-overload conditions

 

1-100 ms

 

General
Ambient temperature -20-70 °C
Guarantee Extended Actisense guarantee 3 Year
Gland clamping range Cable diameters accommodated 4.5-10 mm
IP Rating IP66

Here are some Frequently Asked Questions about the NDC-4.

Need more help? Visit our Support Centre or Contact Us.

Actisense is dedicated to providing up-to-date software and resources for our products. Here are some useful tools and documentation to help you make the most of your product:

The Actisense NDC-4 allows up to five NMEA 0183 sources to be multiplexed into a single stream*.

Two flexible ISO-Drive outputs allow two different downstream talker baud rates to be created, ensuring maximum system flexibility.

It provides complete access to all NMEA 0183 data sources, configurable filters to remove unwanted data using NDC Control Centre, as well as enabling an on-board PC to read and add the combined data stream.

Factory preconfigured versions enable the NDC-4 to be used out of the box for AIS operation (NDC-4-AIS). An ‘autoswitch’ option is also available (NDC-4-ASW) to provide redundancy options to your NMEA 0183 network.

*Four inputs on the USB version, as the USB interface acts as the fifth channel, overriding the fifth OPTO input.

Ordering Information

(Part number/s)

NDC-4

  • Multiplex up to five NMEA 0183 devices
  • Filter unwanted data leaving you with only what you need
  • Preconfigured versions for AIS (NDC-4-AIS) and Autoswitch (NDC-4-ASW) operation
  • USB option available for simple connection to a PC (NDC-4-USB)
  • USB kit (NDC-4-USBKIT) converts standard NDC-4 to an NDC-4-USB

Supply (“BATT”)
Voltage 8-35 V
Current

 

 

 

40 mA max @ 12V DC under no load

 

Supply (USB)
Supply voltage 4.75-5.25 V
Supply current from USB (see note 1)

 

 

 

75 mA max

 

Opto-isolated Flexible Input
Input voltage between +/- Logical ‘1’/stop bit -15-0.5 V
Logical ‘0’/start bit 4-15 V
Input current Maximum is under +35v overload condition, Min @ 2.0v input level 1.6-9 mA
Differential input voltage Required level for NMEA to be detected 1.8-2 V
Galvanic isolation Between input & output 2500 V
Overdrive protection 40 V
Input Baud rate (ports 0 & 1 + USB) Configurable Baud rate 4800-115200 bps
Input Baud rate (ports 2 & 3) Configurable Baud rate 4800-57600 bps
Input Baud rate (port 4)

 

Fixed Baud rate

 

4800 bps

 

ISO-Drive Flexible Output
Output voltage between ISO Out +/A and ISO Out -/B (under no load) Logical ‘1’ -4.6 to -5 V
Logical ‘0’ 4.6-5 V
Output current at max load of 100 ohm At maximum load, differential drive voltage reduces to 2.1v 21 mA
Output short circuit current (note 2) Due to short circuit protection 50-55 mA
Galvanic isolation From Opto input and (USB) ground 1500 V
Output Baud rate (ports 0 & 1 + USB) Configurable Baud rate 4800-115200 bps
Data propagation delay

 

Under no-overload conditions

 

1-100 ms

 

General
Ambient temperature -20-70 °C
Guarantee Extended Actisense guarantee 3 Year
Gland clamping range Cable diameters accommodated 4.5-10 mm
IP Rating IP66

Here are some Frequently Asked Questions about the NDC-4.

Need more help? Visit our Support Centre or Contact Us.

Actisense is dedicated to providing up-to-date software and resources for our products. Here are some useful tools and documentation to help you make the most of your product: