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We are looking for a bit of an all purpose oscilloscope. We'd like one which is capable of analyzing digital video (specifically, all forms of HD-SDI and 3G-SDI - though 4K would be nice for the future, we expect this capability is beyond our present budget), a vareity of digital protocols (the more the merrier, e.g., I2C/SPI/I2S, PCM, 2-wire, RS-232, Arinc 429, and so forth) as well as being useful in the analysis of power electronics and their control circuitry).
Understanding this is a bit of a tall order, any and all recommendations will be useful.
Thank you for your time and consideration in advance.