DigiFlight II VSGV

sneedrv-6 · #1 11-07-2009, 07:49 PM

I have a DigiFlight II VSGV.Just got it back from the company with the update to allow it to work better with the advanced flight Efis. Today I noticed that in level flight with the AP on say at 6,000 feet if I put my finger over the light sensor of the AP head that auto dims the face of the AP the plane climbs about 400 feet. Remove you finger from the light sensor and the plane drops back to 6,000. It started to really get interesting when I was flying an approach (gps) and removed the black electrical tape from the light sensor, you guesses it, the plane dove 400 feet. I'll be call TT Monday but thought I would post this to see if anyone else can test and I think this could be a safety issue.

Jason
RV-6 Dual AHRS Advanced Flight.
430w
AP is vertical and horizontal

Awesome aircraft photography!
Sneedimages.com

vandi · #2 11-08-2009, 06:06 AM

That sounds like a really nifty "feature" to have...

good luck!

Geico266 · #3 11-08-2009, 06:09 AM

I cannot imagine how the light sensor (to dim the screen) could possibly be linked to the ALT hold or rate of climb. This is gonna be interesting! Keep us informed.

flyvans.com · #4 11-08-2009, 07:17 AM

is this with the new display (blue) maybe?

or still the old one (greenish)...?

given the fact, that there is a history of EMI problems, that could only be rectified using an external db-25 filter (been there, done that) i can certainly imagine something like this happening...
will be very interesting to see wheter anyone else reports the same problem/can reproduce it.

kind of proves my (general, not a/p or trutrak related) experience that the actual wiring itself is easy. the problems appear with EMI, RFI, incompatible serial links and other undocumented stuff similar to this.

keep us updated!

rgds,
bernie

sneedrv-6 · #5 11-08-2009, 07:36 AM

It is the new updated head with the blue screen. I also shot video.

Jason

flyvans.com · #6 11-08-2009, 09:05 AM

i suggest (if not already done) to contact lucas at trutrak and maybe post in their forum as well...

sounds like a bug could have been introduced by the new display...

was about to send in ours for the upgrade, but may want to sit this one out first... thanks for the info.

bernie

Bavafa · #7 11-08-2009, 10:07 AM

shucks, I just sent mine and expected to get it tomorrow. I sure will be testing it to see if mine will do the same. Thanks for the heads up!

Mehrdad
RV7A - IO360M1B

breister · #8 11-08-2009, 10:59 AM

Nuts is right - mine is likewise meant to undergo surgury tomorrow!

Question for the OP - do you have the filter on the back that was recommended for those of us who experienced transients when keying the mic? This symptom sounds similar to the "mild" version of that glitch.

Bavafa · #9 11-08-2009, 11:13 AM

Can any one elaborate a bit more on the filter or DB25 as what it is and what is it suppose to do? Sorry if I sound ignorant in this regard, it is because I am

Mine had the green screen which went out twice but it always functioned properly no issues with mic or auto dimming function.

Regards
Mehrdad
RV7A-IO360M1B

P.S. What version of software do you have now that is misbehaving?

RV7Guy · #10 11-08-2009, 11:35 AM

I've flying mine with the new blue screen for a couple of weeks. I need to contact Lucas tomorrow as well. My unit has been shutting off under bizarre circumstances. I have had it shut off when changing frequencies, when I covered the light sensor and hit the PTT button. I've been able to duplicate this after suspecting a problem. Seems to be sensitive to any electrical changes.

I love the blue screen and I'm hoping this is minor issue that can be quickly resolved. I'm confident in TruTrak.