Charging voltage different on D120 than on D100

Alfio

Member
Joined
Feb 22, 2007
Messages
66
Hello,

I have a D100/120/10A combination. I am seeing differences now with aircraft system voltages. D100 = D10A= 14.5V, and D120 showing 13.9V. They are all on the engine monitoring page.

Would it be right to assume that the voltage for D100 and D10A on the engine monitoring page is taken from the power signal going to these devices, while the D120 sense a the voltage from the current sense resistor? What would cause the difference in voltage readings?

Thanks.

Alfio
 

dynonsupport

Dynon Technical Support
Staff member
Joined
Mar 23, 2005
Messages
13,226
Alfio:

All three units display voltage as measured at their power inputs at the device. There is apparently a 0.6V voltage drop at the EMS-D120.

Hello,

I have a D100/120/10A combination. I am seeing differences now with aircraft system voltages. D100 = D10A= 14.5V, and D120 showing 13.9V. They are all on the engine monitoring page.

Would it be right to assume that the voltage for D100 and D10A on the engine monitoring page is taken from the power signal going to these devices, while the D120 sense a the voltage from the current sense resistor? What would cause the difference in voltage readings?

Thanks.

Alfio
 
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