The past few weeks I have been working on the L-1011 Engine Cluster and Center Main Instrument panel. All indicators are driven by relay boards as the one below. The picture blow shows a stack of two of the 24 relay boards for provide 48 channels. The image above shows a random number of annunciators illuminated and as you can see the engine instruments are still powered down.
Below is a power test before actually connoting anything to the computer. I like running everything for a few hours to see if there are problems (yes, my version of a smoke test). The next step will be to connect all the instruments to the necessary breakers and to power them up from a 110V 400Hz source. Whenever possible I use the original L-1011 breaker.
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