Data from DISS-15 to the map

[Marklar]

Does anyone managed to get this working? The picture below is from Chuck's guide. I set all the switches as per instruction but this light is always off. The cursor on the map is moving when I fly but after several minutes of flying around it shows completely different location to where I actually am. 

 

Edited September 4, 2021 by Marklar

[TheCrysinator]

Also does anyone know if the moving map corrects for drift angle or will my accuracy degrade if there is a significant drift angle?

[Xtorris]

After a few hours of tinkering, I've managed to get the DISS-15 data to map light, to illuminate pretty consistently:

1.) The 'Autopilot Altitude Channel (B)' must be ON.

Every time the DISS-15 data to map light illuminated, if I turned off Channel B the light would go out. The light would illuminate again, if I quickly reactivated Channel B.

*Yaw, Roll, and Pitch SAS are all ON as well.

 

 

 

2. After takeoff, ensure the Hind is trimmed as well as you can

 

3.) DISS-15 data to map light has varying degrees of luminosity. I have no clue what the brightness means. DISS-15 signal strength? Accuracy of the DISS-15 data to map?

 

Here's a screenshot from my last flight. I was at full throttle, R/P/Y trimmed out, and had a nice bright DISS-15 data to map light.

[Enduro14]

Ah very interesting will try thanks!!

[Xtorris]

A small update. By trimming only pitch and roll, but NOT the rudder, I got the DISS-15 update light to illuminate with a pretty high success rate.

[Marklar]

So as I understand it only works in a cruise flight where Hind is perfectly trimmed?

[SunDown]

Very interesting thread. Thanks for posting your work. If the light is green on the map, do that include the airspeed switch to DISS-15 still in the down position?

[Rongor]

I understand that you may have found the solution. But does this make sense?

 

Neither the trim nor the selected AP modes affect the data transmission from the DISS to the map. They may of course affect the DISS itself. But as long the DISS is working fine, it's difficult to see how trimming and AP modes might contribute to map problems.

 

Good luck with that AP altitude mode. It will get kicked out whenever you change your power setting. I don't think it's acceptable to have errors entering the map whenever the pilots change altitude. At least not beyond the general rate of error of this gadget.

 

 

Edited October 12, 2021 by Rongor
I like editing stuff