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|  MIL-P-48619(AR)
3.8.6.1 Parallelism of reticle and imaqe, daylight. -The image
of a target line originally parallel to Datum Plane "Y" shall be
parallel to the horizontal reticle line within 2.0 degrees of arc.
3.8.7 Objective focusinq range.
3.8.7.1 Dayliqht. -Rotation of Eccentric 8205635 shall cause the
objective assembly to travel a minimum of 0.010 inch in each direct-
ion from the position established in 3.8,2.
3.8.7.2 Passive. -Rotation of Ring 11733436 shall cause the
objective-to bring targets from 50 meters to 3000 meters into focus.
3.8.8 Resolution.
3.8.8.1 Daylight. -The resolution shall be 10 seconds of arc or
less in all four meridians. Eyepiece focus shift between any two between any two
meridians shall not exceed 0.25 diopter.
3.8.8.2 Passive. -The resolution shall be one minute of arc or
less in two meridians. Eyepiece focus shift between the meridians
shall not exceed 0.25 diopter.
3.8.9 Electrical characteristics - passive.
3.8.9.1 Imaqe intensifier tube. -The image intensifier tube
shall be energized by the application of +24 6.0 VDC to Contact
11733497 or application of 3 VDC 0.3 VDC to Connector 11733493
(Ref. Dwg. 11733401).
3,8.9.2 Image steadiness. -There shall be no visible flicker, no
movement of the image nor autlible sparking when observed for one
minute. This observation shall be made after the expiration of 15
seconds tube stabilization time.
3.8.9.3 Reticle brightness. -With a minimum of 18 and a maximum
of 30 volts applied to the Contact 11733497, the reticle markings
shall be visible when viewing through the eyepiece with the image
intensifier tube energized (see 3.8.9.1). The reticle brightness
shall be adjustable from off to full bright by adjusting the reticle
brightness control knob MS91528-OE1B clockwise.
3.8.9.4 On-Off Switch. -The image intensifier tube shall shut
down when +24 vDC + 6 vDC is removed from Contact 11733497 with the
on-off switch in the onposition. The tube shall not be energized
by reapplication of the 24 VDC unless the on-off switch is recycled
from off to on.
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