RXP GPS powers when it shouldn't

[EGT]

Hi,

As I understand it, the 750 and 650 should only be powered when the radio master is ON. As it is, the 750 powers the second battery power is available, and there is no way to switch it off.

[tkyler]

I'll look into the RXP control commands a bit more in depth.

-tk

[daemotron]

The RXPs can be configured to draw power from one of the (standard) electric buses in XP. If the avionics switch doesn't hook up a standard bus, but instead uses some custom logic to power the other avionics components then indeed, this will become a rather interesting endeavor  

Edited February 4, 2023 by daemotron

[tkyler]

On 2/4/2023 at 5:07 PM, daemotron said:

but instead uses some custom logic to power the other avionics components then indeed, this will become a rather interesting endeavor

That is the case at the moment, because X-Plane's bus tie system is severly limited, which makes it tough for bus isolation or emergency bus in the case of the Moo..  They are changing this as even the Laminar aircraft devs are having problems with the simplified model....but I couldn't say for sure if their implementation will be adequate.  Its always a challenge tap-dancing around X-Plane's various functionalities.  Already bad enough the radios respond to "avionics bus" dataref and there's only one of those, though the radios are on differing busses in the Moo.  always something.

I do have this on my todo list to look at.

-tkyler

Edited February 6, 2023 by tkyler

[tkyler]

Update.....apparently the latest XP12 will have new facilites for "bus tie" modeling....but since I've already custom coded my own, I have to figure out of Laminar's default will be sufficient...and if so, I'll have to carefully cut out my own bus code without breaking anything.  I'm going to wait and see what XP12 bus tie feature holds before addressing this one.

[daemotron]

Hm, if you have it completely custom, one option could be to use one of the two avionics switches to also power e.g. the standard avionics bus, without touching the rest of your own bus tie logic code (not sure if I'm too naive there, never tinkered with XP's electric buses).