Advertisement
Quick Links
N183-41 Serial Multiplexer Installation & Operation Manual
General Description
Each N183-41 Serial Multiplexer provides four NMEA-0183 opto-isolated listener ports
and one talker port. Multiple units may be interconnected to provide additional listener
ports (i.e., two units will provide seven listener ports and three units will provide ten lis-
tener ports).
The talker port enables the computer to send "query" messages to instruments
equipped with a "listen" port, such as a LORAN or GPS receiver. The Talker port util-
izes a standard RS-422 differential driver as specified by the Standard.
A standard RS-232 interface is provided for connection to the host computer. The de-
fault baud rate is 4800 so that is also NMEA-0183 compatible. The N183-41 is fully
compliant with the National Marine Electronics Association NMEA-0183 Standard for
Interfacing Marine Electronic Devices, Version 2.00, 1992.
Installation
Installation of the N183-41 requires connection to a power source (8-16VDC), the in-
struments, and the computer. All connections are made via a 16-pin terminal strip as
detailed below: (See Fig. 1)
Great Lakes Marine Specialties
Great Lakes Marine Specialties
Great Lakes Marine Specialties
Great Lakes Marine Specialties
800
800- - - - 821
821- - - - 0207 USA & Canada
0207 USA & Canada
800
800
821
821
0207 USA & Canada
0207 USA & Canada
952
952- - - - 925
925- - - - 1285 All other Countries
1285 All other Countries
952
952
925
925
1285 All other Countries
1285 All other Countries
NoLand Engineering, Inc.
www.navstore.com
www.navstore.com
www.navstore.com
www.navstore.com
Page 1 of 6
Advertisement
Related Manuals for Noland Engineering N183-41
Summary of Contents for Noland Engineering N183-41
- Page 1 RS-422 differential driver as specified by the Standard. A standard RS-232 interface is provided for connection to the host computer. The de- fault baud rate is 4800 so that is also NMEA-0183 compatible. The N183-41 is fully compliant with the National Marine Electronics Association NMEA-0183 Standard for Interfacing Marine Electronic Devices, Version 2.00, 1992.
- Page 2 N183-41, it is important to maintain the proper polarity of the lines. Connect the "A" terminal of each input port of the N183-41 to the corresponding "+" or "A" output terminal of each instrument. Connect the "B" terminal of each input port of the N183-41 to the corresponding "-"...
- Page 3 For installations which require more than four instruments to be interfaced, multiple N183-41's may be used. Two or three N-183-41's may be interconnected as shown in Fig. 3 to provide seven and ten listener ports respectively. In this case the RS-232 output of one N183-41 may be used to drive an...
- Page 4 The talker (TLKA,TLKB) port The N183-41 features one NMEA-0183 talker port. The N183-41 receives data to be sent out of the talker port from the host computer via the RS-232 port on a character-by-character basis storing the data in the talker buffer until a complete message is received.
- Page 5 NoLand Engineering, Inc. N183-41 Serial Multiplexer Installation & Operation Manual talker sentence query sentence proprietary sentence talker Sentence The general format for a talker (instrument) message is: $ttsss,df1,df2,..[CR][LF] All messages start with a Dollar sign ($) and are terminated with a Carriage Return/ Line feed ([CR][LF]).
- Page 6 NoLand Engineering, Inc. N183-41 Serial Multiplexer Installation & Operation Manual Troubleshooting In general, most users will find the installation and operation of the N183-41 to be trouble-free. However, if faults should arise, the following procedures are recommended to diagnose the problem: The majority of faults with electronic equipment are due to worn or incorrect wiring.