INPUTS SHOW UP AT 6.00V

Just started getting this PDM 25 installed and running. Google search has not come back with an answer but all my inputs show up at 6.00v and they are 14+ ish actual. What should i be looking at to correct this?
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Just started getting this PDM 25 installed and running. Google search has not come back with an answer but all my inputs show up at 6.00v and they are 14+ ish actual. What should i be looking at to correct this?