snoop9erdog
Well Known Member
Hi All. I'm finalizing and wiring up all my Garmin boxes, plus I have IBBS with PFD,GTN625, ARINC, ADAHRS, EMS, and MAGnetometer on the IBBS, most which take minimal amps. Items in an emerg to get down. MFD is on the Garmin Gad 27 Keep Alive. G5 (another contingency) is on separate backup battery.
Startup procedure is to switch on the IBBS backup battery first to check that those items come up and check charge, then Master/Batt/Alt on, so with at least 14.4 V or more the systems runs off main buss. IBBS switch stays on and only kicks in backup once the main batt is rundown/depleted to a min voltage.
So the question is with that startup process is an avionics master even needed? My avionics master is essentially my backup battery switch that powers up most everything, minus my Comm1 because it has no secondary power feed.
Convince me that in 2023 an avionics master is needed. Id appreciate your thoughts
Startup procedure is to switch on the IBBS backup battery first to check that those items come up and check charge, then Master/Batt/Alt on, so with at least 14.4 V or more the systems runs off main buss. IBBS switch stays on and only kicks in backup once the main batt is rundown/depleted to a min voltage.
So the question is with that startup process is an avionics master even needed? My avionics master is essentially my backup battery switch that powers up most everything, minus my Comm1 because it has no secondary power feed.
Convince me that in 2023 an avionics master is needed. Id appreciate your thoughts
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