Work through the following steps to find out where it is failing. If the voltage reads less than 11 V, there is likely an issue with your power supply.If the voltage reads greater than 11 V, the test is successful, and your data logger is receiving enough power.Touch the red probe to the terminal screw labeled 12V or Battery +.Touch the black probe to the terminal screw labeled G or Battery.If your data logger does not have the two-pin connector, you will need to trace the wires from the battery to the data logger and make the measurements there.Most Campbell Scientific data loggers have a green plug that connects to a socket labeled POWER IN. Measure the voltage on the power input terminals of the data logger.You can check whether the data logger is getting power from the power supply by following these steps: In contrast, you will touch the black probe to one of these: the terminal screw labeled G, -, or the bare end of a black wire. During testing, you will touch the red probe to one of the following: the terminal screw labeled 12V, +, or the bare end of a red wire. To measure the dc voltage, set your DMM to the 20 Vdc range with the red probe firmly in the mAVΩ socket and the black probe firmly in the COM socket. Most of the steps outlined here involve direct current (dc) or voltage measurements on different parts of your power system. In this article, we’ll look at seven steps to help you find out if your solar-charged power supply has a problem.īefore we get started, you will need to have these tools handy: These may include issues with batteries, charge regulators, or charging sources. Are you having communication problems or seeing readings you don't trust? Is it possible your solar-charged power supply is the cause? How can you find out for sure?Īs we mentioned in the “6 Steps to Determine if Your Data Logger Needs Repairing” blog article, many data acquisition system failures are caused by problems with the power supply.
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