LEI-504 is four input video switcher provides convenient, low cost way to route high definition and standard definition serial digital signals. This switcher is compatible with 270Mb/s, 1.5Gb/s and 3Gb/s serial digital interface signals. The unit can also be used for ASI and SMPTE 310M (19.4Mb/s) signals the re-clocking will automatically be turned off. LEI-504 automatically equalizes incoming SDI signal, compensating for greater than 1000ft of cable at 270Mbps, greater than 250ft of cable at 1.485Gbps, and greater than 100ft of cable at 2.97Gbps. The signal is then re-clocked, with automatic rate detection for all popular data rates. LEDs on the front panel will indicate the data rate of the output video. LEI-504 is a multi definition (MD) SDI 4 x 1 video switcher capable of equalizing and re-clocking all common serial digital signals, since it supports both standard definition and high definition signals, this makes it the ideal SD/HD/3G video switcher for any application. LEI-504’s versatility is illustrated by its ability to switch from SD to HD, SD to 3G, HD to 3G, and vice versa. Another unique feature of this unit is its ability to vertical interval switch when the inputs are synchronous. Vertical interval switching means that the switch takes place in the vertical interval of the video and no glitch will be seen in the active area of the video.