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RJ-45 Pin Out
BK&
SBIMPLY ETTER!
33
Connection to a PC
Note that many modern laptops do not come equipped with a DB9 style serial port. If your computer only has
a USB style serial port, you'll need to obtain a USB to DB9 Serial port adapter cable.
B&K offers a pre-made connector suitable for connecting a serial port to a standard network CAT5 cable with
RJ45 connectors (p/n 13290). However, should you wish to make your own, here is the pin configuration for a RJ45:
CT Receiver Connection
Plug one end of a RJ-45 terminated CAT5
cable into the main RS-232 communica-
tions port on the back of the CT Receiver.
Computer Connection
Plug one end of a RJ-45 terminated CAT5 cable
into the serial communications port on the back of
the computer using the serial DB9 to RJ-45
Adapter.
USB to Serial Adapter
USB to serial Adapters can be a convenient solution for
connecting to a computer with no available DB9 style serial
ports. Install the required drivers and then verify what com
port the USB Adapter is on. Once your COM settings are
determined, configure the BKcSuite and B&K CK1.2 /
SR10.1 Editors for simple and easy setup.
NCNC NCNC
TX
RCV
NC
TX
RCV
No Connection
RS-232 Host Transmit
RS-232 Signal Ground
RS-232 Host Receive
DB9
DB25
Function
RJ45 Connection
Pin 3
Pin 2
Host Transmit
To RJ45 Red
Pin 2
Pin 3
Host Receive
To RJ45 Green
Pin 5
Pin 7
Host Ground
To RJ45 Black