Inverted Syn Vision Lynx NGT-9000 - ADS-B Discussions

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Inverted Syn Vision Lynx NGT-9000

12/23/2021 11:56 AM

b2002

Joined: 12/12/2021

Posts: 34

Inverted Syn Vision Lynx NGT-9000

I am a new user and I'm having issues trying to get iFly GPS to show the synthetic vision properly when connected to my Lynx NGT-9000. The view is inverted with a bank. What needs to be done to correct this? Thanks.

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12/23/2021 2:22 PM

Cobra

Joined: 4/20/2011

Posts: 2602

Re: Inverted Syn Vision Lynx NGT-9000

Your AHRS needs to be calibrated to straight-and-level. Your Lynx documentation should explain how to do that.

12/23/2021 3:56 PM

b2002

Joined: 12/12/2021

Posts: 34

Re: Inverted Syn Vision Lynx NGT-9000

I did not realize the Lynx had an AHRS, I will look into it. Thanks.

12/23/2021 4:20 PM

Cobra

Joined: 4/20/2011

Posts: 2602

Re: Inverted Syn Vision Lynx NGT-9000

Well, let me rephrase: Synthetic vision requires an AHRS source to drive the attitude information. I'm not familiar with your Lynx device. If it does not have an AHRS, then I don't think you can expect the synthetic vision to work.

If your Lynx doesn't have an AHRS, then I'm a little confused, because if the iFly wasn't getting any attitude information I'd expect it to default to a straight-and-level presentation that just didn't move when your attitude changed. Since it's upside down, it seems to be getting some information from somewhere. Does it seem to move in correlation with the plane, or is it static or erratic?

12/23/2021 7:18 PM

b2002

Joined: 12/12/2021

Posts: 34

Re: Inverted Syn Vision Lynx NGT-9000 Modified By b2002 on 12/24/2021 2:22:50 AM

It seems the Lynx has a feature called AHRS but it appears to be only for heading and altitude output, not attitude. The SV inversion happens as soon as the app picks up the Lynx wifi and is steady in that position. It is as if the app is expecting an attitude source from the Lynx but finds none and reverts to this odd inverted result.

Additionally, when I choose the Lynx as the input device, the app says "waiting" and never receives anything, though the syn vision is right side up. "Auto-detect" and some of the other choices will connect and provide ADS-B information, but all with the same inverted SV result.

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Inverted Syn Vision Lynx NGT-9000

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