correct as is UPLOOK blanking Sidewinder seeker FOV - EDIT

[Hulkbust44]

When UPLOOK is commanded only the radar HACQ circle is visible and the previous 9X LOS cue has been blanked.  This means you can't use UPLOOK as it's sole function is to aim the 9X seeker. Also in UPLOOK a small cross is displayed at the top of the screen way outside of the JHMCS FOV, swaps places relative to the side you are looking at. -Most likely an old debug too that wasn't disabled.
Edit: Appears that the crosses are the uplook reticles, seeing as I never got them to function I assumed that they weren't it, looked different too.

UPLK.trk

Edited February 8, 2022 by Hulkbust44

[Swift.]

Those little crosses you see are the Uplook reticules. What the HMD does in this mode is cues the 9X seeker to one of those cross positions depending on which side you are looking. Which is why as you said, the 9X seeker LOS appears to 'blank', its actually just being replaced by those little crosses.

FWIW, The University of Tennesse have a published thesis about JHMCS that includes a description of these reticules.
"Combat Effectiveness of Joint Helmet Mounted Cuing System"

Edited February 3, 2022 by Swift.

[Hulkbust44]

13 minutes ago, Swift. said:

Those little crosses you see are the Uplook reticules. What the HMD does in this mode is cues the 9X seeker to one of those cross positions depending on which side you are looking. Which is why as you said, the 9X seeker LOS appears to 'blank', its actually just being replaced by those little crosses.

FWIW, The University of Tennesse have a published thesis about JHMCS that includes a description of these reticules.
"Combat Effectiveness of Joint Helmet Mounted Cuing System"

 

Thanks swift, don't know how I missed that. I assumed those reticle were wrong as they look different in DCS and they also don't work as far as I can tell.