Without the HD module to use it for inverted flight you had to arm the unit, turn it off get the heli inverted and then turn it on. Once you wanted to get back to upright you had to turn it off again. Talk about a pita. It sounds like with the new HD unit you can turn it off below 50' and just use it as a bailout.
You have the switching for inverted flight and HD module almost correct.
If you have the HD module, it only functions or is used if a mode is selected that requires it. There are five modes that can be setup.
> No Flt. Mode/OFF is a switchable mode
> Level Flight is a switchable mode
> 3D Inverted Flight is a switchable mode
> Level in Hard Deck is a switchable mode
> Altitude Hold is a switchable mode
The auxalary channel on many radios have two position switches as with a DX7 and some have 3 position switches as with a DX8.
Most pilots assign one position as OFF and then choose one of the other modes for position two.
I can have my DX8 set as follows:
Position 1 = Level in Hard Deck
Position 2 = Off
Position 3 = any one of the following
> Altitude Hold or
> 3D Inverted Flight or
> Level Flight
Note: the hard deck (altimeter) module is only used with two of the modes.
> Altitude Hold or
> Level in Hard Deck
But the hard deck (altimeter) module is NOT used with the
> Level Flight or
> 3D Inverted Flight
If you choose to fly in the 3D Inverted Flight mode you can follow this procedure.
> Take off with CoPilot II turned off
> At any altitude you choose, you may place the helicopter inverted
> Then flip the switch to Inverted Flight mode. (This way CoPilot II knows for sure you wanted to enter 3D Inverted flight mode. This also prevents the pilot for inadvertently switching 3D flight mode ON while in level flight and CoPilot II rolling the helicopter inverted unexpectedly).
The helicopter can then be flown inverted with stabilization.
Now to come out of Inverted Flight simply place the helicopter in a position that has the main blades at a 60 degree angle and CoPilot II will complete the roll out placing the helicopter in a stabilized upright position. In effect CoPilot II switches from Inverted Flight mode to Level Flight mode without flipping a switch.
To exit Inverted Flight mode I usually roll the helicopter left or rights to level and return the stick to neutral and the helicopter is in Level Flight mode until I turn CoPilot II to the Off position.
If a pilot is just starting to learn to fly inverted and looses control/orientation causing the helicopter to tilt in a direction of 60 degrees or more the CoPilot II automatically roll the helicopter level. However, unlike being in the Hard Deck mode CoPilot II does not take complete control away from the pilot nor does it manage collective pitch.
Yes, Hard Deck mode can be use as a bail out mode below the hard deck.
Hope this helps with the understanding of CoPilot II's functions.
If I am unclear on any aspect please let me know.
CoPilot HD Beta tester