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The cable in the plane is shielded and comes from Dynon and it does not work too. I found out that any 18 ft cables either from Dynon or built by me does not work properly and a 4 ft cable built by me works perfectly. I suspect that the EFIS sends a weak signal to the EDC and distance matters...

I finally got the EFIS and the EDC working.  I removed the EFIS and the EDC from the plane, fixed them on a board and connected with a temp cable (4Ft).  I managed to calibrate the compass and upgrade the firmware to V5.6. BUT if I replace the 4ft cable by a 16 ft one, I loose the heading. Both...

Yesterday, I was adjusting the Baro so the altitude tape would display the right altitude for my airport and, to my surprise, the altitude tape changed from displaying feet to the number 0.0. The graduation above and below the digital readout are hundred feet gradations. The altitude tape...

As indicated in my previous post, I finally have built a temporary 4 wires cable connecting the D10A to the remote compass. I used the internal battery for power. Well it looks like the D10A displays a heading and the heading moves when I apply a magnet around it or turn slightly the EDC. I...

Thanks for reassuring me. I have then to assume it has something to do with my setup. i will continue working on my new cable. Unfortunately, the local electronic store was out of DB25 female connector. I did the rest of the cable but still waiting for the DB25. I indicated in one of my...

Well, I forgot to run the magnet around the EFIS itself. Will do it this weekend. However, when I change direction, the EFIS (internal compass) heading changes. The pitch could have been off by few degrees max. Nothing drastic here. I intend to build a basic cable between the EFIS and the EDC...

Sorry for the delay, I could not go to the plane earlier due to a knee problem. As we agreed, I did remove the ferrous screws holding the EDC. Turning a bit the EDC or moving a magnet around it did not change the heading on the EFIS. The OAT does not have a white box around it. The OAT temp is...

Early next week, I will get to the plane and perform the moving the EDC test and test the OAT by rubbing an ice cube on the probe. In response to your questions, I was moving the magnet without heading changes while the OAT was connected and reporting a temp.  As for the OAT, I never provoked...

Thanks for your quick and VERY informative reply. Fortunately, I had to go to the airplane earlier today and did perform the tests you suggested.  Here are the results: With EDC disconnected, the EFIS internal compass is working but not accurate.  Normal behavior as it was never calibrated...

I am unable to calibrate my EDC-D10A to my D10A EFIS. I have sent the EFIS and the remote compass to Dynon for syncing the firmware and testing because of communication problems. They were returned to me without any explanations about their status. I must assume that both were working fine, the...

I am repositioning my remote compass and according to the installation procedure, the EFIS-D10A should be aligned with the remote compass. I bought an electronic level to help me with the procedure but to my surprise, the level has 3 small magnets underneath. Am I risking damaging the remote...

Thank you for your quick reply and for clarifying the ground connections , I will recheck my cable with a ohmmeter. Just another quick question. Does the metal shielding need to be grounded to the EDC and EFIS casings?

Originally, my EFIS was detecting and reading the remote compass ok but lately the compass was stock to a compass reading regardless of the airplane's direction.  I assumed it was a bad connection and decided to redo the wiring.  I noticed that the ground wires to the DB9 were soldered together...

Well I did repair the wire and the EFIS always detects and displays the compass and the OAT. The OAT is working perfectly however, I just noticed that the reading from the compass is not good. I calibrated the EFIS/Remote compass last week and the EFIS was reporting accurate readings after the...

Well, I did check the cable pin by pin today and did find that the Data A and the Ground wires were crossed.  I guess that the former owner did cut the main wire in the past and fail to differentiate the W/G and W wires when repairing it. I am surprised to see that the EFIS was able to...

First, sorry for the long delay.  i did not have a chance to go back to the aircraft before today. Today, I brought in a computer and tried to get the firmware versions of both the EFIS and EDC with the support program.  Unfortunately, the support program found the EFIS but not the EDC.  I...

After some reading, I found out that the following information is relevant. Once the few seconds when everything works ok is passed, the Efis display alternates from Remote Compass not Detected to a wrong compass reading every second or so. The OAT will always indicate OAT not found.

I just bought an airplane and I am trying to fix this annoying issue.  When I start the EFIS-D10A, it detects perfectly the EDC and the OAT for about 10 to 40 seconds then it displays Remote Compass not Detected and OAT not found. I turn the EFIS off and on, the same thing happens again.  If I...