Pigtail End Wiring - Decagon Devices SRS Operator's Manual

Spectral reflectance sensor

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SRS Sensors

4 CONNECTING THE SRS

4.4

Pigtail End Wiring

Figure 9: Pigtail End Wiring

SRS sensors with the stripped and tinned cable option can be made

with custom cable lengths (up to 305 meters) on a per meter fee

basis. This option gets around the need for splicing wire (a possible

failure point). Connect the wires to the data logger as Figure 10

shows. Connect the supply wire (white) to the excitation, the digital

out wire (red) to a digital input, and the bare ground wire to ground.

Figure 10: Pigtail End Wiring to Data Logger

Note: The acceptable range of excitation voltages is from 3.6 to 15

VDC. If you wish to read the SRS with the Campbell Scientiﬁc Data

Loggers, you will need to power the sensors oﬀ of a 12 V or switched

12 V port.

If your SRS is equipped with the standard 3.5 mm plug, and you

wish to connect it to a non-Decagon data logger, you have two op-

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