TM 11-6720-239-35
d. Perfornuznce Standards for Collimation.
b. Test Procedures.
When the finder assembly is focused on either the
(1) Focus the finder assembly on the 4-foot
4-foot target or the collimator target, a projected
target.
image of 26 to 28 lines/millimeter should be visi-
(2) Holding a finger over the photocell, cock
ble on the rear lens adapter unit. If not, the front
the shutter and depress and hold the SHUTTER
RELEASE BUTTON.
element of the lens must be loosened, using the
front lens remover and focusing tool, and ad-
(3) Check the image projected on the rear
adapter unit.
justed. The position of the front lens is adjusted
to provide the minimum projected image on the
(4) Focus the finder assembly on the collima-
rear lens adapter unit for both the 4-foot target
tor target.
and the collimator target. Once this is accom-
(5) Check the image projected on the rear
lens adapter unit.
plished the lens must be cemented into this posi-
c. Test Settings.
tion.
Camera setting
Correct indication
Finder assembly focused on
26 to 28 lines/millimeter
4-foot target.
projected on rear lens
adapter unit.
Finder assembly focused on
Same as above.
collimator target.
Tools for camera disassembly/reassembly.
4-4
