Skyview Network Connection Fault - Data 1 Pair (Pins 1 &6)

[Brudy61]

Skyview Network Connection Fault - Data 1 Pair (Pins 1 & 6)
This fault error Just showed up on a flight to Oshkosh.
Is the (Pin 1 & 6) in the DB9 cable or the EMS?

 

[swatson999]

All the pinouts are shown in the appendices in the Installation Manual.

 

[peter9545]

They are in the serial cable, DB9 connectors.

 

[Rhino]

The pin numbers on the D9F (female) connectors on the cables, are identical to the pin numbers on the D9M (male) connectors on units that use the Skyview Network. This is usually an issue with the network cable. Out of curiosity, what makes you suspect the EMS specifically? The fault you listed doesn't say EMS, and there are usually several other units in the network.

 

[Brudy61]

Thanks for the information, I have the pin numbers for the DB9 connectors.
I thought the DB9 cable would be the direction to look, due the the Fault being listed as a network fault.
This Dynon system has more than 100 hours in this plane.
I will dig into the DB9 Cable.

 

[Carl_Froehlich]

As this is a new problem I suggest you look at the simple stuff first. I had the same issue and found one 9 pin connector not fully seated (and mounting screw loose). I would have bet a paycheck that I had all the connectors in right - and would have lost.

Carl

 

[Brudy61]

DB9 cable was loose at the EMS.
It is fixed.

Thank You for the help.
Bryan

 

[Rhino]

Thanks for coming back and letting us know the fix.

 

[KenLeonard]

I am getting the same error. So by reading above, it would appear likely a db9 connection. But it doesn’t say which one. I can say I have wiggled, reconnected, tightened, looked for bent pins… no good. Worst, it is intermittent.

 

[SV_Classic]

I had the same issue and found one 9 pin connector not fully seated (and mounting screw loose).

is there a tool for turning those knurled mounting screws that hold the connectors in? I've seen some with a slot for a screwdriver but the Dynon ones don't have that. Maybe cut a slot with a dremel tool? I'm using duck-billed pliers which is inelegant at best.

 

[chriscalandro]

is there a tool for turning those knurled mounting screws that hold the connectors in? I've seen some with a slot for a screwdriver but the Dynon ones don't have that. Maybe cut a slot with a dremel tool? I'm using duck-billed pliers which is inelegant at best.

While I understand this endangers me of being “part of the problem” but nature and biology have provided a tool for this “knurled mounting screw” that otherwise known as a ….thumb-screw

 

[Rhino]

While I understand this endangers me of being “part of the problem” but nature and biology have provided a tool for this “knurled mounting screw” that otherwise known as a ….thumb-screw

You're on fire today.

 

[airguy]

It is indeed a "thumb-screw" and does not need to be "tool-tight". The torque you can apply with your fingers is sufficient, hence the design.

Is your data pair error constant or intermittent? You could start by disconnecting all or substantially all of your db9 connections on the entire Dynon system - then start reconnecting them one by one (starting from the screens and working your way to the extremities) watching for the error to appear. That would at least give you a clue about which DB9 connector or wire run is suspect.

 

[SV_Classic]

When I was disconnecting my electrics and avionics I found maybe 40% of the thumb screws were loose to varying degrees. Maybe it was the original builder not being very detailed oriented, maybe they worked their way loose. In reinstalling the reworked harnesses, the "thumb screws" were either in awkward locations or weren't really easy enough to turn. I didn't make them tighter than just snug but the tool was there to know they were that tight at least.

With the Garmin avionics I installed in my last build, the screws had slots for a screwdriver, they were also metal case assemblies so I just assumed that the Garmin assemblies were of a higher quality.

It's a 450 hp 9 cylinder engine in a 1600 pound airplane, stuff is going to come loose if I'm not anticipating the effects of vibration and taking precautionary measures.

 

[chriscalandro]

…it’s a DB9. Dynon does not make it. You are free to use any DB9 connector you choose.

 

[SV_Classic]

Dynon supplies it and I'd prefer to not go back into things to replace the connectors with a better version although, if the fasteners continue to come loose, I'll have to see what the options are.

 

[swatson999]

I hate the knurled knob fasteners on these things. I've found too many loose during annuals (actually, 1 is too many). I've used cable ties, blue loctite, etc., to keep them in place, but it mystifies me as to why these are considered standard and acceptable given there is no *positive* locking mechanism in the design.

Hell, even the old style printer parallel connectors had wire bales that snapped into place to secure them.

 

[airguy]

Hell, even the old style printer parallel connectors had wire bales that snapped into place to secure them.

Oh man it's been a long time since I've seen one of those, but you're right - and they did work quite well.