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Another important parameter is sampling. Early TBC's were 3fsc (10.7 mhz). This was determined by the Nyquist theorem. Later ones were 4fsc (14.31818 mhz). This required faster memory and reduced aliasing. Ten bit quantizing and 4fsc would later become the SMPTE standard.
Another piece of equipment I couldn't find any info on is the DPS Phaser1. It was made by Digital Processing Systems out of Toronto. It was a 9 bit unit, occupied about 10 inches of rack space and had two 6 inch fans on the rear. DPS was later bought out by SA (Scientific Atlanta). We liked it so much we bought another one when we put our second live truck in service. It used the Signetics 8x305 processor and had ECL memory. It was a workhorse. It would make chicken salad out of chicken (well, you know).
CNN had a Quantel. I thought it was over-priced at $250K. But they were the first with a DVE. But the Ampex ADO would become more popular as it was about $78K.
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Last edited by kf4rca; 06-15-2025 at 06:30 AM.
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