ComNav G2 & G2B Installation & Operation
Document PN 29010093 V1.5 - 35 -
16 December 2016
DE9 Connectors
To connect the G2’s RS-232 port to a PC serial port (or to the DE9-P end of a
USB-to-Serial adapter); connect the wires to a DE9 female connector (a “socket type”,
aka DB9-S) as follows:
2 Brown Port 1 Transmit data Receive Data
3 White/Brown stripe Port 1 Receive data Transmit Data
5 Grey Signal Ground Signal Ground
Table 3 – PC COM Port (DE9) to G2’s RS-232 Port A
DB25 Connectors
If the PC has a DB25 COM port connector, connect the wires from the G2 to a DB25
female connector (aka DB25-S) as follows:
3 Brown Port 1 Transmit data Receive Data
2 White/Brown stripe Port 1 Receive data Transmit Data
7 Grey Signal Ground Signal Ground
Table 4 – PC COM Port (DB25) to G2’s RS-232 Port 1
Note: none of the other RS-232 signals that are normally available
on PC COM ports (& sometimes used by the ports &/or
equipment connected to them), such as the “status” & “flow
control” signals (RTS, CTS, DSR, DCD, etc.), are available on,
nor used by, the G2’s serial port.
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