Dual Screen Video Solution for LCBC Church • Manheim, PA
LCBC Church in Central Pennsylvania approached Ka You Communications with a unique challenge: to recreate the dual screen presentation found at their main campus at their remote locations. The church had previously looked at terrestrial based solutions, but soon realized that these were complex and too expensive. LCBC asked Ka You Communications to come up with a cost-effective satellite solution..
The Ka You team installed a Ku-Band uplink antenna at the site of the main campus in Manheim, designing a system for LCBC that includes individual HD video encoders for both screen shots with 4 stereo audio feeds each. A transport stream multiplexer (mux) was used to combine the outputs of both encoders. The mux provides a single transmission stream that includes both video feeds and 8 stereo audio feeds to a satellite RF modulator, which drives the satellite uplink’s amplifier to feed the transmission to a geo-synchronous satellite. The satellite receives, converts, and re-transmits the signal back to the Continental US.
At the remote campus, a small, unobtrusive satellite antenna receives the feed and delivers it to the dual high-def video decoders located within the A/V technical booth. The two decoders separate the individual video feeds from the multiplex transmission and allow the tech staff to deliver to separate projection screens.
Upon installation, LCBC’s recording devices were found to need an even tighter specification for the frame synchronization than previously expected. Although the decoders came with “Genlock” as a feature, the HD video recorders used by LCBC required a tighter spec. LCBC needed to not only have a great picture to the projectors, but also the same clarity for potential recording devices. To solve this issue, an additional out-board frame sync generator was added at remote locations.