110-0007509/A
25
COM3
This serial port is set up for RS232 communication. This serial communication
format is fixed and cannot be changed. This serial port may not be fitted on all
computer models.
COM4
This serial port is set up for RS232 communication. This serial communication
format is fixed and cannot be changed.
Use USB-to-serial converters if additional serial lines are required. Several types are
commercially available. Note that most USB-to-serial converters will introduce some
latency. They may also introduce jitter in the communication. The amount of jitter
depends on the quality of the converter.
Pin
RS232
RS422
RS485
1
DCD
TX–
DATA–
2
RX
TX+
DATA+
3
TX
RX+
4
DTR
RX–
5
GND
GND
GND
6
DSR
7
RTS
8
CTS
9
RI
Related topics
Summary of Contents for Simrad NISE 3900E
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