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The sampler in the 1S1 is quite different from the sampler in the [[1S2]]. The 1S1 uses a four-diode | The sampler in the 1S1 is quite different from the sampler in the [[1S2]]. The 1S1 uses a four-diode | ||
sampling bridge, terminated | sampling bridge, terminated within the 1S1. The 1S2 uses a two-diode feed-through sampler, typical for | ||
TDR instruments. | TDR instruments. |