What should be paid attention to when purchasing a projector?

1. Be clear about the nature of the source to be displayed < br / >
According to the nature of the source, the projector can be divided into two categories: ordinary video player and digital player. When only the whole TV signal is displayed, such as video tape playing in karaoke hall, you can choose a normal video player; to display the signal output by VGA card, you can choose a digital player; and all models of NEC have both video and digital ports.



2. Confirm the installation method < br / >
The installation mode of projector is divided into table front projection, ceiling front projection, table rear projection and ceiling rear projection. The front projection is the projector and the audience on one side; the rear projection is the projector and the audience on both ends of the screen respectively. If it is used temporarily, the table type ceiling can be selected. If the space is large, there is overall arrangement in civil engineering, and the back projection method is the best overall effect. If the space is small, the back projection refraction method can be selected.



3. According to the display environment, such as room size and lighting < br / >
If the room area is small, LCD projector is optional. When the display area is large, there is no sunlight, and the light is dark, you can choose a low brightness projector of about 800-1200ansi. When the requirements for ambient light are not high, the display area is large, and the high-resolution graphic signal is displayed, LCD projector can be selected.