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Blue Mountain EFIS -Lite Problem

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FLYaDIVE(at)aol.com
Guest

Posted: Sat Jun 24, 2006 2:18 pm Post subject: Blue Mountain EFIS -Lite Problem

Hello my fellow electron chasers:



I have a problem, my doctor already knows that but I thought I would share it 

with you.



I just installed a Blue Mountain EFIS-Lite in the panel of an RV-6A.  

With the engine OFF and MASTER ON I then turn on the EFIS.

The unit boots normally and the AI screen comes up.

It takes a few seconds and the horizon stabilizes.

[I feel it is not stabilizing SOLID the way a vacuum AI would.]

Here comes the real problem ...

Master ON, EFIS OFF - Normal procedures I start the engine.

All the vacuum gages stabilized.

I then turn ON the EFIS.

The AI NEVER stabilizes there is a slow tumble until I see either nothing but 

sky or ground.  NEVER STABILIZING!



Has anyone ever run across this problem and if so what was the cause and cure?



It has been suggested that I perform two (2) operations:

1 - Upgrade the Software from Ver 2.21 to Ver 2.64

2 - Hook up the keyboard and do a Warm System reboot from the keyboard



What are your thoughts?  Does this sound like a cure?  Of course the software 

upgrade is required and will be done.



Barry

"Chop'd Liver"

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brian

Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

Posted: Sat Jun 24, 2006 5:21 pm Post subject: Blue Mountain EFIS -Lite Problem

On Jun 24, 2006, at 6:13 PM, FLYaDIVE(at)aol.com wrote:



 	  Quote: 	
		   Here comes the real problem ...

 Master ON, EFIS OFF - Normal procedures I start the engine.

 All the vacuum gages stabilized.

 I then turn ON the EFIS.

 The AI NEVER stabilizes there is a slow tumble until I see either  

 nothing but

 sky or ground.  NEVER STABILIZING!


	


Sounds exceedingly broken to me.



 	  Quote: 	
		   Has anyone ever run across this problem and if so what was the  

 cause and cure?



 It has been suggested that I perform two (2) operations:

 1 - Upgrade the Software from Ver 2.21 to Ver 2.64

 2 - Hook up the keyboard and do a Warm System reboot from the keyboard



 What are your thoughts?  Does this sound like a cure?  Of course  

 the software

 upgrade is required and will be done.


	


You know, IMHO no gyro device should ever require the pilot to do  

anything to make it work right. It should come up and work flawlessly  

from the moment you turn it on and it erects. But that is just my  

opinion.



It is not the hardware that scares me with glass -- it is the software.

Brian Lloyd                         361 Catterline Way

brian-yak AT lloyd DOT com          Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

— Antoine de Saint-Exupéry

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_________________
Brian Lloyd
brian-yak at lloyd dot com
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery

bferrell(at)123mail.net
Guest

Posted: Sat Jun 24, 2006 5:38 pm Post subject: Blue Mountain EFIS -Lite Problem

Barry,



I'd call Greg and the guys and get their opinion.  First, the older BMA 

products need a good GPS fix to get an attitude solution, but this doesn't 

sound like your problem.  It sounds more likely to me that your magnetometer 

is being affected by a large current near it, which I believe can also cause 

a poor attitude solution.  Does your heading indication wander as well?  I 

have the E/1, and I've never had this sort of issue.



Brett



---

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FLYaDIVE(at)aol.com
Guest

Posted: Sat Jun 24, 2006 7:21 pm Post subject: Blue Mountain EFIS -Lite Problem

In a message dated 6/24/06 9:43:10 PM Eastern Daylight Time, 

bferrell(at)123mail.net writes:



 	  Quote: 	
		   Barry,

  

  I'd call Greg and the guys and get their opinion.  First, the older BMA 

  products need a good GPS fix to get an attitude solution, but this doesn't 

  sound like your problem.  It sounds more likely to me that your 

magnetometer 
	


 	  Quote: 	
		   

  is being affected by a large current near it, which I believe can also 

cause 
	


 	  Quote: 	
		   

  a poor attitude solution.  Does your heading indication wander as well?  I 

  have the E/1, and I've never had this sort of issue.

  

  Brett

  

===========================
	


Brett:



I have tried the unit with and without the magnetometer hooked up.  Same 

results!  The BALL does not wander and the DG is stable.  I do have to make a 

better mount for the magnetometer, yet I don't believe that is the problem or what 

is affecting the AI part of the unit.

At BMA, Larry suggested two steps:

1 - Upgrade the software and

2 - Do the warm reboot with the keyboard.

Then if it still does not erect call him back.



Barry

"Chop'd Liver"

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