HD-MAX Echo Sounder User Guide
25
two ports, the one is connected according to standard 9-pin serial port
definition, and the other one is only connected to communication pin as RX,
TX and GND. The other control pin is not connected. You just need to plug
in your RS-232 serial port.
Figure 3-6
Table 3.1 Interface description
Pin
Pin definition
1
TXD2
2
RXD2
3
RTS1
4
RXD1
5
DSR1
6
DCD1
7
DTR1
8
PCGND
9
TXD1
10
CTS1
Initial setting of GPS mainboard
Detailed information is as shown in the software section