4S2: Difference between revisions

4S2 (view source)

90 bytes added , 6 March 2011

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-The Tektronix 4S2 is a [[sampling oscilloscope|sampling]] vertical plug-in for the [[661]].  It does not contain a delay between the input
+The Tektronix 4S2 is a [[sampling oscilloscope|sampling]] vertical plug-in for the [[661]].
-connector and the sampler.  This has the advantage of higher bandwidth.  It has the disadvantage of making it impossible to see the leading
+Unlike the [[4S1]], the 4S2's signal path does not contain a delay line between the input
-edge of the triggering event unless a pretrigger is used.
+connector and the sampler.  This has the advantage of maintaining higher pulse fidelity and thus higher bandwidth.
+It has the disadvantage of making it impossible to see the leading
+edge of the triggering event unless a pre-trigger is used.
 * [http://w140.com/tek_4s2a.pdf Tektronix 4S2A Manual (PDF)]