Evaluation of the Orwin 1988 Square Aspect Ratio, 20-Inch Diagonal Monochrome Monitor
Abstract
The Orwin Associates 1988 Monochrome CRT Monitor is an excellent 1408 x 1408 pixel, 23 inch monochrome gray scale monitor. The monitor easily passes all the IEC monochrome monitor specifications for both monoscopic and stereo viewing. We have separated the monoscopic from the stereoscopic viewing for grading, but both modes receive an "A" for performance for the Image Analyst and Cartographer applications. This COTS monitor is an excellent display for NIMA Imagery Exploitation Workstations. Accordingly, NIDL certifies the Orwin Associates 1988 Monochrome CRT Monitor as being suitable for IEC workstations requiring a monochrome monitor. The monitor passes all stereo specifications with a Nuvision panel and its associated passive glasses, or with StereoGraphics wired active glasses. We calculated the dynamic range for various amounts of light falling on the face of the tube for monoscopic operation based on our measurements of reflectivity. Thus, we would expect the Orwin 1988 monitor to have a dynamic range of 346:1 with 3 fc and 138:1 for 10 fc falling on the screen. The amount of light falling on the screen can be minimized by using a shield to block strong overhead light to thereby increase the contrast ratio.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 20, 2000
- Accession Number
- ADA406658