GRT Avionics

Thanks for the response. I'll give that a look when I'm at the plane next.

My EIS voltage is reading approximately 13.5 volts on both my EIS 4000 display and my Horizon HX Efis but testing with my multi meter directly at the battery indicates 14.5 volts.

This test is done in flight by the way. I had originally thought my alternator was not putting out proper voltage but ...