TD 64 Flashcards
WHAT ARE THE GENERAL PROCEDURES WHEN CONDUCTING A LIGHT DEGRADATION CHECK FOR SUPPLEMENTAL COCKPIT LIGHTING?
-Position a reflective material (map sheet, note card, vinyl checklist) approximately 12 to 18 inches from the eyes.
-Shine the supplemental light onto the material
-With the unaided eye, look at the resultant reflection cast on the windscreen
-Observe this same reflection through the ANVIS
(An acceptable supplemental light source will
allow NVD aided vision through the reflection. The reflection may even disappear. If the
reflection, glare, or stray light interferes with the ANVIS aided vision of any crewmember the
light source is unacceptable.)
TC 3-04.4 pg. 4-28
EXPLAIN HOW THE AUTOMATIC BRIGHTNESS CONTROL (ABC) AND BRIGHT SOURCE
PROTECTION (BSP) WORK ON THE ANVIS?
ABC: controls the number of electrons that exit the microchannel plate to keep to maintain image brightness at preset levels.
BSP: reduces voltage to the photocathodewhen exposed to bright light sources. Protects the image intensifier but reduces resolution.
3-04.4 pg. 4-15
WHAT ARE THE MECHANICAL FUNCTIONS OF THE ANVIS?
adjustment for eye span distance, vertical travel, tilt angle, fore-and-aft adjustment for eye relief, eyepiece focus, and objective lens focus
ANVIS TM 11-5855-313-10 pg 0003-1
