5000 lumen 1080p Data Projector
July 5, 2012
Test Results and Connectivity
Bright image with a wide brightness range. The 7700FullHD came in at 5088 lumens in its Bright mode in our tests, more than matching its 5000 lumen rating, and making it easily bright enough for a large conference room or a small auditorium. For smaller images or dimmer lighting conditions, you can also lower the brightness substantially. The Presentation and sRGB modes both drop the brightness by about 40%, for a nearly identical 3054 and 3040 lumens, and the Movie mode drops it nearly in half, to 2557 lumens. In addition, Eco mode lowers brightness by about 24%, to 3856 lumens with the Bright preset.
Brightness uniformity. Although I measured the brightness uniformity for the 7700FullHD at only 68%, the projector does better than the number suggests. The brightest and dimmest areas are far enough apart, and the change gradual enough, so that even on a solid white screen, you're not likely to notice the difference unless you're looking for it. Break up the image with text and graphics, and the difference is essentially impossible to see.
Good connectivity. The 7700FullHD offers a full set of connectors for image sources, with two HDMI's, two VGA ports that can both double for component video, one 3-RCA component port, plus S-Video and composite video. Other inputs include a USB B port for direct USB display from a computer and a USB A port for reading JPG and Presentation to Go (PtG) files from a USB memory key. (You can download a free utility from Dell's Web site to convert PowerPoint presentations to PtG files.)
In addition, there's a LAN port for displaying images and controlling the projector over a network plus a second USB A port for use with an optional $69.99 Wi-Fi dongle.
Audio connections are more limited. In addition to the two HDMI ports, the projector offers only a single stereo miniplug jack for audio input plus the ability to get audio over the LAN and Wi-Fi connections. A menu option lets you choose which audio input to use. The only additional connectors, finally, are a miniplug jack for stereo audio output, a pass-through VGA connector, a 12 volt trigger, and an RS-232 connector for controlling the projector from a computer or third party controller.