Campbell Scientific CS135 Lidar Ceilometer User Manual
Page 21
User Guide
13
Table 4.1 Function of the connector pins
Mains Connector
Pin
Function
Colour of supplied cable
cores
1 Live
Brown
2 Not
connected
NA
3 Neutral
Blue
4 Earth
Green/yellow
Blower/Heater Connector
Pin
Function
Colour of supplied cable
cores
1 Neutral
Black
(1)
2 Fan
+
Black
(2)
3 Therm
Black
(3)
4 Therm
(0V)
Black
(4)
5
Switched 230/115 AC
Live
Black (5)
6
Fan on
Black (6)
E Earth
Green/yellow
Communications Connector
Pin Colour
of
supplied
cable
cores
9-PIN `D’
Connector
(fig 4.4)
RS232 RS485
Half
duplex
RS485 Full duplex/
RS422
1 Red
8 CTS* Y Y/T
x
non-inverting
2 Yellow
7
RTS*
B/R
x
non-inverting
3 Green
5
Gnd
4 Black
Gnd
Gnd
5 White
2
Tx
Z
Z/T
x
inverting
6 Blue
3
Rx
A/R
x
non-inverting
E Screen
*If hardware handshaking is not used pins 7 and 8 should be connected together.
4.5.2 Wiring Using Supplied Campbell Scientific Cables
Two cables are supplied, each 10m long. One is for the mains power supply, the
other is for communications.
If the power cable is incorrectly wired then irrevocable
damage can be done to the unit and there is risk of
serious injury or death.
WARNING
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