4.5 Wiring using supplied Campbell
Scientific cables
Two 5 m cables are shipped with the CS140. One cable supports communications and supplies
power to the sensor. The other cable provides power to the hood heater.
CAUTION:
Incorrectly wiring the communications/power cable to the CS140 can irrevocably damage the
unit.
At one end, the communications cable terminates with a 9-pin D-connector (DB9). The
D-connector can be connected directly to a computer or data logger such as the Campbell
Scientific CR1000X using a suitable interconnecting cable such as the SC110. If another type of
connection is required, the D-connector can be easily removed.
NOTE:
The maximum recommended cable length is 10 m. Use a twisted pair cable if the RS-485
cable needs to be longer than 10 m. Please contact Campbell Scientific if you need a longer
cable.
Figure 4-4. Cable connections
4.6 Maintenance cable
Campbell Scientific offers a maintenance cable that will force communications to RS-232, 38400
baud, and sensor id to 0. The cable connectors allow it to be put in between the CS140 and the
existing connection and a 5 m flying lead with a 9-way D connector for RS-232 communication.
CS140 Background Luminance Sensor
9
