%HP calculation without PA

[joeczabaranek]

I recently installed an EMS D-10 and was able to connect the RS-232 output from my Apollo GX60 to the EMS. Unfortunately the EMS is not receiving altitude data correctly. It would be nice to have a %HP calculation that is based on sea-level. This would be conservative for my purpose (identifying safe LOP operation limits)

My data logs correctly show ground speed and lat/long. GMT and altitude do not get recorded. Im assuming this is because of the message format being output from my obsolete GX60. If there is a configuration of the GX60 that is known to work, please let me know!

 

[dynonsupport]

Unfortunately, choosing sea level altitude as an input to the % Power calculation is not a feature of the EMS-D10.

Suggest you contact Garmin for support on the features / settings for the GX60.

Update - In an old discussion thread, it was determined that the GX60 does not output GPS altitude on its serial output. Thus, if using the GX60 as the GPS input, you will not be able to display % Power on the EMS-D10.

I recently installed an EMS D-10 and was able to connect the RS-232 output from my Apollo GX60 to the EMS.  Unfortunately the EMS is not receiving altitude data correctly.  It would be nice to have a %HP calculation that is based on sea-level.  This would be conservative for my purpose (identifying safe LOP operation limits) 

My data logs correctly show ground speed and lat/long.  GMT and altitude do not get recorded.  Im assuming this is because of the message format being output from my obsolete GX60.  If there is a configuration of the GX60 that is known to work, please let me know!

 

[joeczabaranek]

Again, I realize this is not a feature. That is why I posted in the "Suggestions" topic area. Could this be implemented in the next firmware build for the EMS-D10? Simply default to 0' PA in the absence of a GPS altitude input.

 

[dynonsupport]

10,000' of altitude changes % power by about 15%, so this indication is pretty worthless without accurate altitude data. It's also not true that it is conservative. 24" MAP at sea level and 2,400 RPM is about 73% power, but at 10K feet it's 87% power because the pumping losses are lower.

You can hook up an inexpensive GPS "puck" to get this data if you want.