EOTech CNVD-T3 Clip-On Night Vision Device - Thermal 3 - Manual (Page 51)

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f. Turn on the CNVD-T3 using the startup procedures
in section 2.12.
g. Align the CNVD-T3 reticle with the center of the
target per paragraph 2.13.5.1.
h. Fire a 3-round shot group and note the center of the
shot group relative to the designated strike point.
i. Adjust the position of the reticle to move the center
of the shot group to the designated strike point.
j. Fire another 3-round shot group and again observe
the center of the new shot group relative to the
designated strike point.
k. When 2 out of 3 rounds are in the designated strike
zone, the CNVD-T3 is aligned with the rail of the
host weapon.