Campbell CNR4, Instruction Manual, Page: 25 / 70

CNR4 Net Radiometer
15
TABLE 7-1. SOLAR Cable (Wire Color, Function, and Datalogger Connection)
Wire
Color Wire Function
Differential Datalogger Connection
Terminal
Single-Ended Datalogger
Connection Terminal
Red
Pyranometer Top
Signal
U configured for differential input
1
,
DIFF H (differential high, analog-
voltage input)
U configured for single-ended analog
input 1 , SE (single-ended, analog-
voltage input)
Blue
Pyranometer Top
Reference
U configured for differential input 1, 2 ,
DIFF L (differential low, analog-
voltage input)
2
AG or ⏚ (analog ground)
White
Pyranometer
Bottom Signal
U configured for differential input
1
,
DIFF H (differential high, analog-
voltage input)
U configured for single-ended analog
input 1 , SE (single-ended, analog-
voltage input)
Black
Pyranometer
Bottom Reference
U configured for differential input 1, 2 ,
DIFF L (differential low, analog-
voltage input) 2
AG or ⏚ (analog ground)
Grey
Pyrgeometer Top
Signal
U
configured for differential input 1 ,
DIFF H
(differential high, analog-
voltage input)
U
configured for single-ended analog
input 1 ,
SE
(single-ended, analog-
voltage input)
Yellow
Pyrgeometer Top
Reference
U configured for differential input 1, 2 ,
DIFF L (differential low, analog-
voltage input)
2
AG or ⏚ (analog ground)
Brown
Pyrgeometer
Bottom Signal
U configured for differential input
1
,
DIFF H (differential high, analog-
voltage input)
U configured for single-ended analog
input 1 , SE (single-ended, analog-
voltage input)
Green
Pyrgeometer
Bottom Reference
U configured for differential input 1, 2 ,
DIFF L (differential low, analog-
voltage input)
2
AG or ⏚ (analog ground)
Clear Shield
AG or ⏚ (analog ground) AG or ⏚ (analog ground)
1 U channels are automatically configured by the measurement instruction.
2 Jumper to AG or ⏚ with a user-supplied wire.
TABLE 7-2. TEMP Cable 1 (Wire Color, Function, and Datalogger Connection)
Wire Color Wire Function Datalogger Connection Terminal
White Thermistor Signal
U configured for single-ended analog input 2 ,
SE (single-ended, analog-voltage input)
Red Thermistor Voltage Excitation
U configured for voltage excitation 2 ,
EX , VX ( voltage excitation)
Black Thermistor Reference
AG or ⏚ (analog ground)
Clear Shield
AG or ⏚ (analog ground)
1
Pull back wires for Pt-100 (grey, brown, green, and yellow), which are not in use, and tie them around the TEMP cable
using a cable tie or electrical tape to avoid possible damage to the Pt-100, due to electrical short circuit.
2 U channels are automatically configured by the measurement instruction.