Originally Posted by
segfault
Eurocat HMI air situation display updates every 200ms. I don't believe there is a five second update cycle anywhere else in the chain.
The ASD very well may update every 200ms. However the surveillance position symbols update every five seconds. If you zoom in close enough you can actually see the update, count 5 seconds, and then see the next update. I believe it’s a hangover from when all surveillance was SSR and 5 seconds was how long one sweep of the radar took.