Amprobe IR-710 Benutzerhandbuch - Seite 13
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Distance and Spot Size
As the distance (D) from the target being measured increases,
the spot size (S) of the area measured by the instrument
becomes larger. The spot size indicates 90% encircled energy.
Locating a Hot or Cold Spot
Make sure that the target is larger than the spot size. The
smaller the target, the closer you should be to it.
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