Scott Hersha
Well Known Member
This is a question for the GRT experts. It?s Saturday and I just completed my panel upgrade yesterday and have a couple questions about programming/configuration - and GRT isn?t open on the weekend, so maybe someone here can help. I have a new Horizon 10.1 EFIS and a new MINI-X for my RV4, with a legacy EIS from about 2003. The EIS is mounted behind the panel on a hinge so I can tilt it down and see it if I want to, which I doubt I?ll do. When I started the engine (new SureFly mag, and rebuilt Slick), I had multiple alarms. I probably have too many limits programmed, and I will change/eliminate some of those today, but a couple of the indications were way off. I set all limits to zero in the EIS, but configured them in the Horizon. But - I DID configure scale factors and offsets in the EIS, as well as the Horizon. I?m wondering if that might be wrong. I have 4 aux inputs in my older EIS: fuel level left; fuel level right; fuel pressure; and manifold pressure. The first three of these are fed power from the 4.8 volt EIS power pin and that power is filtered through a resistor - 470 ohm for fuel level, and 200 ohm for fuel pressure. I?m guessing all those aux inputs should only have scale factors configured in the Horizon EFIS and set to zero in the EIS, but unable to get any clear direction from the GRT install manual. That may be causing some of my weird indications.
Thanks
Thanks