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NoLand Engineering, Inc. 

N183-41 Serial Multiplexer Installation & Operation Manual 

Page 3 of 6 

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Great Lakes Marine Specialties

Great Lakes Marine Specialties

Great Lakes Marine Specialties

Great Lakes Marine Specialties    

800

800

800

800----821

821

821

821----0207 USA & Canada

0207 USA & Canada

0207 USA & Canada

0207 USA & Canada    

952

952

952

952----925

925

925

925----1285 All other Countries

1285 All other Countries

1285 All other Countries

1285 All other Countries    

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 
input (listener) 
port of a second 
N183-41. For 
NMEA 0183 
compatibility, 
the connection 
should be made 
as shown in Fig. 
2(c).  
 

Mounting

 

Three through 
holes are pro-
vided for mount-
ing the N183-41 
to any conven-
ient surface. Al-
though the unit is 
watertight, it is 
best to mount it 
away from direct 
sunlight and/or 
water spray to 
prevent exces-
sive heating of 
the unit or corro-
sion of the termi-
nals. If the 
N183-41 is ex-
posed to exces-
sive humidity, it 
is recommended 
that the terminal 
connections be 
treated with an 
anti-corrosion 
compound.  

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