Hello,
I was closing on two AI F4s on TTI Syria in TWS using 4 bar scan at 40deg azimuth, using the . They began to diverge, so adjusted the settings to 2 bar 60deg azimuth. I double pressed the elevation scan bar, so I cycled through the settings until I had the desired settings. As they diverged I used the RAID/FLIR FOV option to look at their tracks, on and off to check the radar settings and their directions.
Through some combination of changes to the Elevation scan bar/ azimuth scan and use of the RAID/FLIR FOV function, the Elevation scan bar/ azimuth scan values escaped their limits. See the image below for an example. The AZ/EL page had the yellow border overlapping the green border box, and the contacts disappeared from radar. Undesignating and RSET did nothing to fix the out of bounds values. The AI F4 suggested I file a bug report with his AIM-9 to my face.
I have been able to reproduce the issue in the attached track file. In the file, it took far more cycling of Elevation scan bar/ azimuth scan and use of AID/FLIR FOV to reproduce the bug than on the original instance, hence the erratic use of those settings.
Kind regards,
Ropob.
Fa18_scanbar_azi_bug.trk