January 21, 20224 yr I’ve been using the Garmin GTN 750 for several years now in Prepare 3d, so I’m quite familiar with how it operates. During a recent upgrade to P3d v5.3, I could not get my present installation, a F1 GTN Complete to function. Assuming that the new sim version was the cause, I ran the updater/went to the F1 website. Unfortunately, I ultimately discovered that support for the F1 GTN Complete had been discontinued. Luckily, I also had heard that the developer had joined the Reality XP team. So since that day, I’ve been happily (for the most part) using the Reality XP GTN 750. I’ve found it works quite well, and in some places better, than the F1 model. One thing I cannot get to work is the VNAV function. On the F1 unit, I used either the autopilot APR or VNAV button (depending on the aircraft model) to activate VNAV once the unit announces “vertical track”. The glide slope would then pop up on the HSI. I cannot get the Reality XP GTN installation to do this. I assume I’ve set something up wrong in the Configuration Panel. First off, my system: Prepar3d v5.3, Reality XP GTN 750 only –fully updated as of the January 2022 update. Aircraft tested = Carenado PC12, Alabeo C404 Configuration Panel Settings: Panel Instruments = all boxes are blue Device Options = all boxes are blue AFMS Main Indicator CDI Key Enabled Selected Course for GPS Enabled Selected Course for VLOC Enabled V-Flag Declutter Normal Main System GPS Selected Auto Engage Autopilot APPR Enabled Airspace Labels Enabled Navigation Features Vertical Navigation Type VNAV Transition to Approach Enabled VDI Scale feet:500 Transition Altitude FL: 180 RF Procedure Legs Disabled Mark on Target Disabled Can anyone suggest what I can do to get the VNAV connection to the aircraft to work? It seems that I’ve read that others have had success at this and since it used to work with the F1 version of the GTN 750, I’m sure it should work with the Reality XP version. Edited January 21, 20224 yr by RXP
January 21, 20224 yr 1 hour ago, LZScout said: One thing I cannot get to work is the VNAV function. Hi, Are you referring to VDI (vertical deviation indication - en route)? If so, there are plenty of topics already about this in the forum: https://www.qwant.com/?q=site%3Aavsim.com+GTN+VNAV+garmin+autopilot And a recent discussion here:
January 22, 20224 yr Author RXP, many thanks for the quick response. My apologies, there appears to have been a lot of discussion on the issue I failed to find while searching on AVSIM. It appears I’ve been quite spoiled by the F1 GTN 750 and I now must embrace reality. I understand the Reality XP GTN 750 fully emulates the necessity of proper EFIS and Garmin autopilot for enroute autopilot controlled VNAV to function. That is something no P3d aircraft has (as far as I know). It would be a nice feature for the developers to create an option in the software to emulate the necessary equipment so that we could see the full functionality of such a system. Given the well thought out options available in the AFMS section, it would seem that this should be possible. Edited January 22, 20224 yr by RXP
January 22, 20224 yr Let me reassure you, I also fail to find my own posts quite often in just using the embedded search. This is why I nearly always use site wide search engines requests and I usually find it all! Here is the canonical form:site:avsim.com keywords For example the above is:site:avsim.com GTN VNAV garmin autopilot As for the integration I agree there is much more that can be done to make integration nearly 1:1 to real world integration, especially since the Reality XP GTN (and GNS V2) also output the actual same information which would be used IRL to do so. Having said this, I can assure you there are many X-Plane developers who are contacting us and who are taking advantage of the data our simulations are offering for their integration. Edited January 22, 20224 yr by RXP
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