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{{Plugin Sidebar 2| | |||
title=Tektronix 4S2 | | |||
summary=Dual channel sampling plugin | | |||
image=Image needed.jpg | | |||
caption=4S2 image needed - please add | | |||
series=[[661|661 Sampling Scope]] | | |||
introduced=1963 | | |||
discontinued=(?) | | |||
manuals= | |||
* [http://w140.com/tek_4s2a.pdf Tektronix 4S2A Manual (PDF)] | * [http://w140.com/tek_4s2a.pdf Tektronix 4S2A Manual (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_4s2_factory_cal_proc.pdf Tektronix 4S2 Field Recalibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_4s2_factory_cal_proc.pdf Tektronix 4S2 Field Recalibration Procedure (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_4s2_tentative_factory_cal_proc.pdf Tektronix 4S2 Factory Calibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_4s2_tentative_factory_cal_proc.pdf Tektronix 4S2 Factory Calibration Procedure (PDF)] | ||
* [http://w140.com/tek_4s2a_eng_spec.pdf Tektronix 4S2A Engineering Spec (PDF)] | * [http://w140.com/tek_4s2a_eng_spec.pdf Tektronix 4S2A Engineering Spec (PDF)] | ||
}} | |||
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 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. | |||
The 4S2 uses a four-diode sampling bridge. The 4S2A uses a two-diode sampling bridge. | |||
This design change is discussed in the 4S2A Engineering Spec document linked below. | |||
==Pictures== | |||
<gallery> | <gallery> | ||
File:Tek 4s2a sampler.png|42SA sampler schematic | |||
File:Tek 4s2a pulse gen.png|42SA pulse generator schematic | |||
</gallery> | </gallery> | ||
[[Category:Sampling plugins]] | [[Category:Sampling plugins]] |