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Product Support

Why are some data readings wrong when I use my prologger with an external power source?

A modification is required in order to use external power on the prologger. This affects units with serial numbers less than 820 and manufactured before November 2000. When external voltage exceeds 10V analog instabiltity occurs. The affected units will need to be sent back to Unidata for repair under warranty. For more info contact support@unidata.com.au.