4S2: Difference between revisions

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The Tektronix 4S2 is a two-channel [[sampling oscilloscope|sampling]] vertical plug-in for the [[661]].
{{Plugin Sidebar 2|
Signals enter the 4S2 through [[Connectors#GR-874|GR-874 connectors]] on the front panel.
title=Tektronix 4S2 |
Unlike the [[4S1]], the 4S2's signal path does not contain a [[delay line]] between the input
summary=Dual channel sampling plugin |
connector and the sampler.  This has the advantage of maintaining higher pulse fidelity and thus higher bandwidth. 
image=Image needed.jpg |
It has the disadvantage of making it impossible to see the leading
caption=4S2 image needed - please add |
edge of the triggering event unless a pre-trigger is used. 
series=[[661|661 Sampling Scope]] |
 
introduced=1963 |
The 4S2 uses a four-diode sampling bridge.  The 4S2A uses a two-diode sampling bridge. 
discontinued=(?) |
This design change is discussed in the 4S2A Engineering Spec document linked below.
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>
Image:Tek 4s2a sampler.png|42SA sampler schematic
File:Tek 4s2a sampler.png|42SA sampler schematic
Image:Tek 4s2a pulse gen.png|42SA pulse generator schematic
File:Tek 4s2a pulse gen.png|42SA pulse generator schematic
</gallery>
</gallery>


[[Category:Sampling plugins]]
[[Category:Sampling plugins]]

Revision as of 12:11, 23 September 2014

Template:Plugin Sidebar 2 The Tektronix 4S2 is a two-channel sampling vertical plug-in for the 661. Signals enter the 4S2 through 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

  • 42SA sampler schematic

    42SA sampler schematic

  • 42SA pulse generator schematic

    42SA pulse generator schematic

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