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The Optical Instrument Reticles (OIR), or Pattern Generators, are used for command
and control. When an OIR is installed in front of the IR ILLUM that has been focused
to a spot, it will project the shape of a circle, triangle, plus sign, square, or T-shape
as shown in Figure 3-8.
To use the OIR, select the appropriate pattern as marked on the front of the OIR.
Remove the Exit Port cover, and replace it with the OIR.
To remove the top Exit Port Cover, pull on the loose end of the Exit Port Cover
retaining strap and stretch it over the top stud. Repeat the procedure to remove
the bottom Exit Port Cover retaining strap from the DBAL-I
2
.
Figure 3-8 OIR, or Pattern Generator
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