Displays in the operational environment can be direct-view or virtual-view, and are analyzed in terms of a broad range of
performance parameters. These parameters include image area, field of view, eye-relief, weight and power, luminance and
contrast ratio, night vision goggle compatibility (type and class), resolution (pixels per inch or line pairs per milliradian),
image intensification, viewing angle, grayscale (shades or levels), dimming range, video capability (frame rate, refresh),
operating and storage altitude, operating and storage temperature range, shock and vibration limits, mean time between
failure, color vs. monochrome, and display engine technology.
This study further looks at design class: custom, versus rugged commercial, versus commercial off-the-shelf designs and
issues such as whether the design meets requirements for the operational environment and modes of use, ease of handling,
failure modes and soldier recommended upgrades.