4S2: Difference between revisions
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The Tektronix 4S2 is a [[sampling oscilloscope|sampling]] vertical plug-in for the [[661]]. | The Tektronix 4S2 is a two-channel [[sampling oscilloscope|sampling]] vertical plug-in for the [[661]]. | ||
Signals enter the 4S2 through [[Connectors#GR-874|GR-874 connectors]] on the front panel. | |||
Unlike the [[4S1]], the 4S2's signal path does not contain a delay line between the input | Unlike the [[4S1]], the 4S2's signal path does not contain a delay line between the input | ||
connector and the sampler. This has the advantage of maintaining higher pulse fidelity and thus higher bandwidth. | 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 | It has the disadvantage of making it impossible to see the leading | ||
edge of the triggering event unless a pre-trigger is used. | edge of the triggering event unless a pre-trigger is used. Each channel has a two-diode sampler. | ||
* [http://w140.com/tek_4s2a.pdf Tektronix 4S2A Manual (PDF)] | * [http://w140.com/tek_4s2a.pdf Tektronix 4S2A Manual (PDF)] | ||