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Issues with GTN 750/650 NAV2 integration in X-Plan
#3
(08-19-2025, 09:14 PM)adminOwner2 Wrote: Hello,

We will start by stating that RSG G500/G5 do not offer official TDS GTNXi support, because of this, behavior as stated above will occur.

If you are in GPS mode in the respective GTNXi unit, then the TDS GTNXi will not overwrite the NAV source, as stated above, since you have "Connect GPS to VOR" disabled, which is correct. We merely write to the appropriate GPS1/GPS2 datarefs.
Hello,

thank you very much for your reply. I have now performed a complete series of tests and organized everything into PDF files in order to keep the upload size manageable. Each PDF shows the GTN units, the G500, the G5 and the relevant datarefs for one scenario. I also included a separate PDF with my current settings.
Unfortunately the forum only allows five files per post, so I will split the results into two parts.
Here are the first documents:
  • Settings.pdf – shows my current TDS GTN plugin configuration
  • ILS NAV1.pdf – everything correct, both G500 and G5 show green LOC and GS
  • ILS NAV2.pdf – G500 shows correct LOC+GS in green, G5 shows a magenta lateral needle pointing in the wrong direction and a magenta GS that follows correctly
  • LPV NAV1.pdf – both G500 and G5 show correct lateral guidance, but only the G5 shows a glidepath, the G500 does not
  • LPV NAV2.pdf – G500 shows the approach correctly, on the G5 the lateral and vertical needles appear but remain frozen

(08-19-2025, 09:14 PM)adminOwner2 Wrote: Hello,

We will start by stating that RSG G500/G5 do not offer official TDS GTNXi support, because of this, behavior as stated above will occur.

If you are in GPS mode in the respective GTNXi unit, then the TDS GTNXi will not overwrite the NAV source, as stated above, since you have "Connect GPS to VOR" disabled, which is correct. We merely write to the appropriate GPS1/GPS2 datarefs.
Continuing with the remaining scenarios:
  • VOR NAV1.pdf – G500 shows the correct VOR needle, the G5 interprets it as a localizer, shows a green GS which should not exist, and the GS is frozen
  • VOR NAV2.pdf – G500 shows the VOR needle correctly, but the G5 shows a magenta needle pointing in the wrong direction and also a magenta frozen GS

I hope these PDFs give you a clear picture of the situation. The datarefs shown in the screenshots do change as expected, but I am not completely sure if they are always the correct ones or if they reflect exactly what should be seen for each case. At least they help to illustrate the behavior.
Could you please confirm whether this is simply because the RSG G500 and G5 are not officially supported, or if there are adjustments that could make this work more reliably. And are there any plans to add proper support for the G500 and G5 in the future.

Thank you again for your time and support.
Best regards,
Fritz


Attached Files
.pdf   LPV NAV1.pdf (Size: 204.04 KB / Downloads: 2)
.pdf   LPV NAV2.pdf (Size: 192.79 KB / Downloads: 2)
.pdf   Settings.pdf (Size: 366.35 KB / Downloads: 2)
.pdf   ILS NAV1.pdf (Size: 194.98 KB / Downloads: 2)
.pdf   ILS NAV2.pdf (Size: 195.69 KB / Downloads: 2)
.pdf   VOR NAV1.pdf (Size: 193.24 KB / Downloads: 3)
.pdf   VOR NAV2.pdf (Size: 179.19 KB / Downloads: 2)
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RE: Issues with GTN 750/650 NAV2 integration in X-Plan - by fritz.vogel - 08-26-2025, 03:15 PM

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