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Product Name:  Noland NM42 NMEA 0183 Serial Multiplexer
Product ID: NM42
 
Manufacturer: Noland
Sale Price $225.00 $219.00
(Savings: $6.00)
 
 
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  Category: Electronics
 
  Description: 

Noland NM42 NMEA 0183 Serial Multiplexer

The Noland NM42 multiplexer combines up to four NMEA 0183 instruments into a common output. Two output formats, RS-232 and RS-422 are provided.
The multiplexer reads and stores the incoming data from each NMEA 0183 talker instrument. Whenever a complete message is received, the multiplexer automatically dumps it to the outputs while it continues reading the inputs. Because complete messages are dumped as soon as they are received, there is no loss of any input data.

A "Talker" port is also included to allow a computer to request specific messages from instruments or to send data such as waypoints or steering commands.

Installation of the multiplexer is simple. The module may be mounted to any convenient surface with all connection made via a terminal strip. A 9 pin D connector (9 pin serial) is provided for PC connection if desired.


Made in the USA.

FEATURES
 
  • 4 NMEA 0183 inputs (RS-422)
  • 1 NMEA 0183 Talker Port (RS-422)
  • 1 RS-422 Output
  • 1 Full Duplex RS-232 Port
  • Selectable Output Baud, 4800/9600
  • Multicolor status LED

The unit is fully automatic, in that once power is applied, it immediately begins acquiring data without user interaction. No software drivers or software configuration are needed.
An LED shows operating status of the multiplexer. Green indicates an input is receiving valid data. Red indicates the talker port (TLK) is sending data. Yellow-orange indicates an error has occurred. Error messages are sent to the outputs to aid in fault detection.

SPECIFICATIONS
 

  • Supply voltage 8-28 Vdc
  • Supply current (@ 12 Vdc) 50 ma. (typical)
  • Input drive voltage (min/max) 0.5/14V (active state)
  • Input impendence 5K ohms (min.)
  • Talker output level 5V differential per RS-422
  • Serial output data rate 4800-38400 baud (selectable)
  • Serial output format RS-232C and RS-422
  • Indicator Tri-color LED
  • Size 4.4" x 3.65" x 1.0"
  • Weight 4 oz.
  • Manufacturer's Warranty 2 year replacement

NM 42 Multiplexer Schematic

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