investigating FCR GM AUTO scale not changing at correct ranges

[Frederf]

With FCR GM (or GMT, SEA) and AUTO scale set the range should decrease and increase based on cursor position according to the following rules:

• Increase when cursor range is greater than 95% current range setting
• Decrease when cursor range is less than 45% current range setting for cursor laterally centered, less for cursor laterally displaced

Equation for range of decrease is 45% times cosine of azimuth, i.e.

Azimuth	Range
0°	45%
10°	44%
20°	42%
30°	39%
40°	34%
50°	29%
60°	22.5%

 

F16 GM AUTO scale not decreasing.trk

[BIGNEWY]

Please let me know where you got the data for the range. 

thanks

[Frederf]

Any of the -34s. They're all the same.

EDIT: Simplest first pass would be 95%/45% range without the off-axis variance. It has auto range scaling so right now AUTO/MAN is doing nothing.

What I don't know is if the min range rule applies to when cursors are outside of the normal +- 60 area. If it is then at 90 degrees off axis the min range is 0. Guessing that clamps to 0 for 90-180 azimuth. It'd be weird for range to scale down based on distance behind.

Edited July 5, 2022 by Frederf