"Peter Clark" wrote in message
...

Are they combined on the same scope, or does the controller have to
physically roll the chair up and down the stations to see all the
screens covering their sectors? If memory serves, in this incident
the screens were separate, the controller was looking at another
screen dealing with something there, and by the time he got back to
this station the aircraft were already well within the lateral
distance which would have caused the alerting system to activate, if
it wasn't INOP.


Could go either way. If the primary system was operational they'd just be
combined at one scope and you used a larger range to see all of the
airspace. If the backup system was in use you couldn't see all of the
airspace at low altitudes because it did not have multiple radar site
capability at that time. You'd have to either switch to different radar
sites at one scope or configure a nearby scope with a different site.