The 840 comes with 32 built-in patterns including some unique patterns containing movement, say the company. All 32 patterns in the 840 have been carefully chosen to ensure that the 840 can effectively evaluate every important aspect of a DVI display or accessory. These include, but are not limited to, the refresh rate performance, testing of overall linearity, the linearity of each pixel component and identifying missing pixel components of fixed resolution display devices such as LCD and plasma monitors and LCD and DLP projectors. The 840 also has patterns that are designed to aid in the testing of DVI accessories such as scalers, distribution amplifiers and switchers, as well as DVI cables.
The 840 has 12 output resolutions, four of which conform to VESA standards including SVGA (800x600), XGA (1024x768), SXGA (1280x1024) and UXGA (1600x1200). In addition to those computer graphics video output resolutions, the 840 also offers a 1400x1050 (4:3) output resolution along with seven widescreen and HDTV resolutions including 480P (720x480), 852x480, 960x540, 720P (1280x720), 1366x768, 1080i (1920x540) and 1080p (1920x1080). All these signals are output at 60Hz.
The 840 supports both 4:3 and 1s6:9 aspect ratios and has circle patterns to allow the evaluation of proper aspect ratio reproduction. For convenience of use, an on board EEPROM saves the last setting used. The 840 has one DVI-D output, seven control buttons, and a seven-segment display indicating the pattern number being output. It is housed in a compact Kramer DigiTools size cabinet and powered by a standard 12VDC power supply. It can also be used with the Kramer VA-100 portable/rechargeable power supply.
(Sarah Rushton-Read)
