Electronic Interference Effects on Station Hardware/Data Logger/USB Cable

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The following are possible causes for electronic interface on Davis consoles and possible remedies:

A) RFI/EMI interference caused by defective AC power supply for VP2 console. If your VP2 was produced before March of 2009 you likely have a faulty power supply that is emitting stray electronic noise into the Data Logger.

Solution: To test, disconnect AC power from console and run VP2 console off internal batteries for a few days and see if dropout issues stop. If confirmed, contact Davis and request the improved OEM power supply for the VP2 console that eliminates this problem. All VP2 systems shipped after Feb. 2009 come with this new RFI free AC adapter that also includes a Ferrite core on the console end of the adapter power cable.

B) Lack of a surge protector power strip or wall plate that also includes line conditioning for your AC adapter Plugging your console power supply directly into a wall outlet is not a good idea, especially if your home has known AC line quality issues. To help prevent stray interference in the AC adapter, use a high quality surge protector/line conditioning power strip or AC wall plate. For additional protection, do not plug any other devices into this same strip or plate.

C) RFI Interference caused by other electronic devices placed too near the VP2 console and/or computer. Devices include Cell Phone chargers, Cordless Phone Base Stations, other rechargeable battery chargers etc.

Solution: Move all such devices at least 6 feet away from the VP2 console, USB cable and computer. Do not share your AC power source for your VP2 adapter with any of these types of devices. Preferably relocate these potential sources of RFI/EMI to another part of the house.

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