xm problems

[jrouault]

I have been experiencing the same issues. Per Rob's recommendation I connected my Hub to the master bus and the XM to the avionics... Thought that fixed my problems, but after a couple of flights noticed the same behavior of intermittent XM connectivity. The hub I am using is the one recommended early on by AFS

Jason

[Rob Hickman]

We have a number of people that have it working without problems, I fly it almost every day I am not seeing any problems with the XM.

1. Are you positive that the ZULU time is correct on all your EFIS screens? If the ZULU time is wrong on the EFIS the screen will think that the weather is old and not display it. We have a number of customers that will have their ZULU offset wrong and then set the ZULU time wrong so that their local time is correct. This will cause XM weather issues. The date must also be correct for the current ZULU time, if it is after midnight in England you need to use tomorrows date. The good news is that the next software release will set the ZULU time from the GPS.

2. Is there anything common that happens when you lose the WX? I find that I can lose weather on the EFIS and on my 496 when I am flying North in Seattle, the satellite is in the southern sky and my antennas are on the glare shield. If I move the antenna or fly south it comes back.

3. How often does this happen and how much do you fly?
4. When you lose the WX does it come back over time on the same flight?
5. Have you tried cycling power to the WX box when it happens and does it fix it?
6. Where is your antenna mounted?
7. What software version are you running?
Email me directly with the answers to these questions and I will see to it that we get to the bottom of it. We need to eliminate as many variables as possible to isolate the problem.

[kevino]

Trevor i was using the AFS recommended Linkysis? The hub is on the avionics bus. The xm is on it's own switch as i got it off the avionics bus.
Rob
1 I will check this out.
2 No there is not a geographics problem. Happens all over and at random.
3 Fly several times a week. is happening 50% of the time.
4 No
5 yes i will recycle but normally will shut down again
6 On the dash RV 10
7 8.03.28
Isolating the power to the xm has not seemed to solve the problem. Even hooked up with seperate battery. I continue to refocus on the hub. Replaced the hub a few months ago and worked ok for awhile then started the same pattern again. Bypassed the hub direct to the 4500 and seemed to work fine. Just got a better hub/switch from Stein's and first flight was good. To be continued.