$2795, 2-channel, 100-MHz, real-time DSO eliminates aliasing. (Tektronix Inc.'s TDS 320 digital storage oscilloscope) (Product Announcement)

EDN, September, 1993 by Strassberg, Dan

With Tektronix's announcement of the TDS 320, a 2-channel, 100-MHz-bandwidth, real-time-sampling DSO, EEs who need an oscilloscope with a bandwidth of 100 MHz or less are left with very few reasons for buying an analog unit. Not many buyers should find the $2795 price to be a stumbling block; some 2-channel, 100-MHz analog scopes cost as much. And, although the new scope isn't the first 100-MHz-bandwidth DSO to be priced this low, it is the first at this price to sample signals that contain frequencies equal to its full bandwidth in real time at 2.5 x the Nyquist rate.

There is an important difference between the TDS 320's real-time sampling and the repetitive sampling employed by other moderately priced DSOs at high sweep speeds. With repetitive sampling, a...

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