EMS not found at power up

[vlittle]

Twice today, I powered up my system and the Skyview could not find the EMS. Cycling the power worked. This is the first time I've seen this. Aircraft is not yet flying. I will check out all of the connectors and d-sub pins. I did find a bad SVN cable once before (pin not fully inserted).

Has there been any other reports of this happening?

Thx, Vern

 

[jakej]

Twice today, I powered up my system and the Skyview could not find the EMS.  Cycling the power worked.   This is the first time I've seen this.  Aircraft is not yet flying.  I will check out all of the connectors and d-sub pins.  I did find a bad SVN cable once before (pin not fully inserted).

Has there been any other reports of this happening?

Thx, Vern

Out of all the systems I've installed I found only one & now fully check them including the crimps I do

Jake J

 

[vlittle]

Twice today, I powered up my system and the Skyview could not find the EMS.  Cycling the power worked.   This is the first time I've seen this.  Aircraft is not yet flying.  I will check out all of the connectors and d-sub pins.  I did find a bad SVN cable once before (pin not fully inserted).

Has there been any other reports of this happening?

Thx, Vern

Out of all the systems I've installed I found only one & now fully check them including the crimps I do 

Jake J

I suspect that I'm getting reflections off of an unterminate SVN cable. Thismproblem started when I removed a servo for service. I will rig a connector with termination resistors and try again.

 

[vlittle]

Well, the plot thickens.  This is now happening every time I power up. I connected the EMS directly to the SV-D1000, with no other devices connected in the system.  Here's what I found:

On a cold power-up, the EMS is not recognized and the EMS lamp is solid red.
On a warm power-up (power off then on again immediately), the EMS is recognized and the EMS lamp flashed red.
Recyling the SV-D1000 with the unit's power on/off function also clears the problem.
Unplugging the EMS SVN cable, the plugging it back in also clears the problem (with power on).

I have tried two different SVN 3 foot cables.

System voltage is 12.3 volts. Temperature 11 degrees C, dewpoint 10 degrees C.

 

[dynonsupport]

That EMS module is unhealthy. The LED should always flash when it has power, even if the SkyView screen is not talking to it. If it doesn't, it means the processor inside is not running properly. That's how we know it's the EMS and not the screen.

Give us a call or an email and we'll get it swapped for you.