D100 Service issue?

[blueflyer]

I just sent my D100 in for service because my attitude indicator was tumbling. (I was very happy with the service.) I got my unit back, hooked it up and went flying. I noticed 2 things:
1. My airspeed indicator did not come alive as early as it did before I sent it in for service
2. My % power indicator read 0% the entire 1.4 hour flight. I did get a notification it had lost DSAB connection a couple of times, but my RPM indicator was still showing on my D100. RPM indicator finally stopped indicating as well. I checked the DSAB connections and they look good. The DSAB connections were not unconnected when I sent the unit in for AI issues. I just unscrewed the harness from the back of the unit.

Any ideas?

 

[Dynon]

1. We've actually improved the come-alive speed over time. With the current shipping software, which you have on your product, it should come alive at 20 knots and then read back down to 15 once alive. Any chance you used to have your IAS set to knots but now have it set to MPH? That could cause it to look like it's coming alive at a higher number.

2. What are you seeing on the EMS for % power? Did you perform a DSAB reconfiguration when you got the unit back (you would've had to, actually, I'm pretty sure).

 

[blueflyer]

1. No changes to airspeed system. All is fine with my airspeed indicator, I just thought I would mention what I noticed.

2. The EMS shows 0% also. I did not reconfigure the DSAB connection upon its return. I will reconfigure the connection and report the results.

Could it be that my D100 was updated during service and my D120 is operating on another update version?

 

[Dynon]

So if the EMS is showing no % power, that's the first place to get that fixed. You need to have all of the following before % power will work:


Barometric altitude (from your EFIS)
Engine type must be set to Lycoming/Continental. Percent power calculations are not available for other engine types at this time.
Horsepower must be set.
OAT sensor installed / working
Fuel flow sensor must be installed and configured.
MAP sensor must be installed and configured.

If the displays aren't talking to each other via DSAB then the EMS can't get altitude, and then the EMS can't compute power, and then you won't see it anywhere. So that's probably the first place to start.

 

[blueflyer]

As background: I used to get % power indications on my EMS prior to sending in my EFIS for service.  Never had any issues with it.  I haven't changed any data in my EMS.  All was working prior to removing the EFIS for service.   

I went flying again today.  I checked the engine data in the EMS and it is as it should be (it hasn't been touched since when I set it, and % power was working).  The DSAB connection was reconfigured today.  The EFIS was showing the MAP and the RMP and I got no warnings of "DSAB connection lost".   

The % power indicator on the EMS came alive for about the last .3 hours of a 1.2 hour flight.

I do not have a fuel flow sensor, but like I said, it used to show % power prior to sending in the EFIS for service.

 

[Dynon]

I can't say I can explain that fully. The % power absolutely needs fuel flow to work properly.

 

[blueflyer]

ok, well, I guess I have just been lucky. I will not worry about it anymore since it requires fuel flow. thanks for the help.