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NM-251A-MUX
Dual Input NMEA Buffer Splitter With Multiplex Functions |
Price ... 240.00 EURO
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Output ports
Each of the five general purpose talker ports transmit NMEA sentences in both RS422 and TTL signal levels, depending on the connection topology chosen (see figure 1, 2 and 3), and can fan out one instrument. Current drawn from each port is efficient enough to drive any NMEA compatible instrument.
The RS-232 port can deliver NMEA sentences to any modern computer running the appropriate software on Windows 98 and above provided that serial communication follows the 4.800, 9.600, 19.200 or 38.400/8/N/1 standard. This port is not optically isolated and should be used for testing purposes only to avoid current leakage. It can be used though to interface a computer system if proper isolation is achieved or if the computer is supplied from an isolated power supply.
The RS-232 port can deliver NMEA sentences to any modern computer running the appropriate software on Windows 98 and above provided that serial communication follows the 4.800, 9.600, 19.200 or 38.400/8/N/1 standard. This port is not optically isolated and should be used for testing purposes only to avoid current leakage. It can be used though to interface a computer system if proper isolation is achieved or if the computer is supplied from an isolated power supply.
Connections
The NM-251A-MUX can be connected as shown in figures 1,2 and 3 using all RS-422 outputs (figure 1), all TTL outputs (figure 2) or using either the RS-422 or TTL output of each port taking care not to connect the same port for both signal level outputting.
Figure 1
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Figure 2
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Figure 3
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Power supply
The NM-251A-MUX can be powered within the range of 10-35 VDC. The nominal voltage of 24 Vdc is advised for powering the device in normal operation. Power input port has a protection for incorrect polarity connection of the supplying voltage.
