Kaman KD-5100 - Manual (Page 9)

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Figure 4 x-y Mirror Alignment Configuration
5. TARGETS
5-1. Material
5-1a. Iron, nickel, and many of their alloys (magnetic targets) are not acceptable for use with the
KD-5100.
5-1b. Aluminum is preferred as the most practical target material. You can mount aluminum
targets on materials with more stable temperature characteristics such as Invar or other substrates
as long as target thickness guidelines are observed (Figure 5).
Figure 5 Aluminum Targets on Invar
5-1c. These systems are set up to work with other nonmagnetic conductive targets on a special
order basis. If you purchased a system for use with a target material other than aluminum, it has
been calibrated (with selected component values) at the factory using that target material. An
arbitrary change in target material may, at a minimum, require calibration or, not work at all.