Just for the record, both data & comp scanners in SRV work in both Combat & Analysis so no need to switch modes, can be left in Combat.
Data Link scanner must target whatever it wants to scan and be within a tiny range - sub 400m in ship, usually in SRV if can target its close enough already and can scan it from there.
Comp Scanner does not need to target the object its scanning, just be looking/pointing at it and usually glows a bit to show its found something.
Just for fun, every single time you replace the hangar and buy another, it will completely forget you want both scanners to work and only put one of them in a fire group to begin with, with weapons in the other. So every single time you have to reassign it to a fire group, such fun!