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My upgrade from 8510B system to 8510C system has hit a snag.

Question asked by dandober on Aug 24, 2020
Latest reply on Sep 14, 2020 by uWHarry

With known good working 8515A test set and 8340 sweeper I am getting a ODD error message on the 8510C screen when I bootup.It says "system key not installed". Powering up with 85102C OFF gets to the test menu screen, I can see a start of normal operation upon exit of a 85102 test, then the same "key not installed message" WHAT KEY?? I can find nothing in docs about a "key" Anyone have an idea what is going on with 8510C?