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280: Difference between revisions
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whose leading edges are synchronized with a particular trigger point in the input signal. | whose leading edges are synchronized with a particular trigger point in the input signal. | ||
The main purpose of the 280 is to extend the frequency range of | The main purpose of the 280 is to extend the frequency range of the trigger circuitry in sampling scopes. | ||
For example, consider a scope with a [[3T77]] and a [[3S2]] with [[S-2]] sampling heads. | For example, consider a scope with a [[3T77]] and a [[3S2]] with [[S-2]] sampling heads. | ||
The S-2 has response to at least 4 GHz but the [[3T77]] is only rated to trigger up to 300 MHz, | The S-2 has response to at least 4 GHz but the [[3T77]] is only rated to trigger up to 300 MHz, | ||