DI / Compass Error

[G_MFHI]

G-MFHI has a D10A with remote compass - RC was fitted due to probs getting the DI to read correctly on all headings. Once fitted, we were more than pleased with the accuracy of the indicated headings.

Last weekend, we upgraded the firmware to 3.0 and now, the indicated headings appear to be miles out (maybe 20 degrees) in some headings.

Do I need to re-cal the unit following the firmware update or should the settings have survived the upgrade? How can I tell if the D10A is using the remote compass (or even if it knows of its existance?).

Any help much appreciated

Regards

Peter

 

[dynonsupport]

We actually now have 4.0 out there, so update to that first. A recalibration should fix it.

We've heard of this happening in a couple of isolated cases after a 3.0 upgrade. Doing a fresh calibration has fixed it for everyone thus far. If you happen to have backups from both before and after the upgrade, zipped up, at support@dynonavionics.com, so we can gather data about the issue. Reference this post in that email.

Note that before you calibrate with 4.0, you'll need the total intensity of the magnetic field, as well as the inclination that you've already looked up. Knowing the intensity of the field helps the EFIS calibrate magnetic heading even better than it has to date.

Finally, one way to check if the EDC-D10A is connected and providing heading to the EFIS-D10A is to wave a magnet in front of the EFIS screen. A headset earcup will do the trick - there are magnets in the speaker. The heading will not wave around if the heading signal is coming from the EDC-D10A, but will if it has been disconnected. In more recent versions of firmware, the heading tape will also say EDC NOT DETECTED if an EDC is disconnected after it has been connected.