Join Date: Oct 2001
Location: Columbia, Missouri
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I didn't see the reports, but I can shed some light on the system.
Digital is a broad brush to paint with, as one can point to a light switch, say that it is digital, and prove it to be a binary system by flipping it on.
I really think you are more interested in the video/audio components at KOMU versus the AVID iNews computer system that the students use to produce the packages, and newscast rundowns, all of which is digital.
The field cameras are DVCPro 25 mb/s standard def cameras that record to tape. The cassettes are brought back to the station, ingested via 1394 firewire to the AVID NewsCutter workstations, and then over gigabit copper to the shared storage LAN. From there, multiple editors have access to the video/audio for editing, and posting for the news producers to put in the rundowns. From there, the finished news stories are sent to an AVID AirSpace for playout to air. The video is uncompressed to a 270 mb/s SDI video signal with embedded audio, switched through a Grass Valley HD/SD production board and associated Wheatstone D9 audio console, and passed to master control where the Utah Scientific 2020 handles the on air switching of the broadcast signal. The path splits for KOMU TV and KOMU DT at this point. The channel 8 signal is converted from the 270 mb/s SDI to analog composite video with stereo analog, while the DT "sees" a standard definition signal that is upconverted from 480i to 1080i before encoding and multiplexing.
Probably more than you need, but bear in mind there are no analog stages in the KOMU newsroom to the channel 36 output signal. The only tape involved is the field tape in the camcorder, and that also is digital.