I dont think you can set ToT on "B" waypoints, only for target waypoints, I think you actually set your desired Mach speed as described in the manual page 184, i.e Mach 1.22 instead of time 12:20:00
I´ve been experimenting with the ToT and ingress speeds, but with poor results:
what I´m trying to do is set up me and my teammate to strike a target area at the exact same time and at combat speed but from two different direction using the ToT function:
On runway or ramp:
Waypoint 5 is my target and have set as such: TAKT/IN, input 9, press B5.
Set Time on Target: TID/IN, input eg 12:15:30, press B5
Set Mach speed for waypoint: TID/IN, press 085 (for Mach 0.85) and press waypoint(s) other than target waypoint.
Set TID/UT and cycle through the waypoints to verify that the ToT and Mach values are set.
After take-off, loiter until time deviation is near zero
Yet regardless which waypoint(s) has the Mach speed set, the aircraft wants to fly at around Mach 0.4 to keep the airspeed deviation indicator and time table deviation at zero, I do arrive at target at exactly correct time but at an awfully slow speed though. what am I doing wrong?
By the way, the manual states that negative time deviation is indicated with a "-"sign but is actually indicated with a "9".
The manual also states that to display the current time, ToT time and set Mach values, you have to set to TID/OUT and press and hold the desired waypoint button, but you do not need to hold, to return to time deviation table you have to cycle the IN/UT switch.