Simple question (I think)

[Glen P]

I have gone through the flight manual but cannot find the answer to this. On the bottom right of my AF-5600, below the RPM indication, I see IGN T: 49.7%. What does that mean?

[Jonathon]

The ignition timing gauge displays timing advance from a Lightspeed or Electroair ignition connected through a Flight Data Systems L2E module.

https://www.fdatasystems.com/l2e-lig...o-efis-adapter