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NM-251BRC
Baud Rate Converter (User Guide) |
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Introduction
NM-251BRC is a baud rate converter that allows interconnection of talkers and listeners with different baud rates
Input
NM-251BRC has one input port that can be configured according to configuration table.
General Purpose Output port
NM-251BRC has five general purpose output ports that are able of transmitting NMEA sentences in both RS422 and TTL signal levels, depending on the connection topology and each one can fan out one instrument. All outputs have the same baud rate as per configuration table
Connections
The NM-251BRC can be connected as shown in figures 1, 2 and 3 using RS-422, TTL or both signal level type outputs.
Figure 1
Connection diagram for NM-251BRC using only RS-422 outputs |
Figure 2
NM-251BRC using only TTL outputs |
Figure 3
Connection diagram for NM-251BRC using RS-422 and TTL outputs |
DIP swithces
The Dip-switches 3,4 configuring input baud rate
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INPUT SETTINGS |
DIP-SW 3 |
DIP-SW 4 |
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4800 |
OFF |
OFF |
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9600 |
ON |
OFF |
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19200 |
ON |
ON |
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38400 |
OFF |
ON |
The Dip-switches 1,2 configuring output baud rate
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OUTPUT SETTINGS |
DIP-SW 1 |
DIP-SW 2 |
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4800 |
OFF |
OFF |
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9600 |
ON |
OFF |
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19200 |
ON |
ON |
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38400 |
OFF |
ON |