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{{Oscilloscope Sidebar | | |||
title=Tektronix 661 | | |||
summary=Sampling scope | | |||
image=661_front.jpg | | |||
caption=Tektronix 661 | | |||
years=1961- ? | | |||
manuals= | |||
* [http://bama.edebris.com/manuals/tek/661 Tektronix 661 Manual (PDF)] | |||
* [http://w140.com/tek_661_late.pdf Late Issue Tektronix 661 Manual (PDF)] | |||
* [http://w140.com/kurt/4s1.pdf 4S1 manual without schematics] | |||
* [http://w140.com/kurt/4s1/ 4S1 schematics] | |||
* [http://w140.com/kurt/tek_4s2_schematics.pdf 4S2 schematics] | |||
* [http://w140.com/kurt/tektronix_4s2.pdf 4S2 complete manual] | |||
* [http://w140.com/kurt/tektronix_5t1a.pdf 5T1A manual] | |||
* [http://w140.com/kurt/tektronix_5t3.pdf 5T3 manual] | |||
* [http://w140.com/tek_661_4s1_5t1_preliminary.pdf Tek 661 4S1 5T1 Preliminary Manual (PDF)] | |||
* [http://w140.com/tek_661_factory_cal_proc.pdf Tektronix 661 Factory Calibration Procedure (PDF)] | |||
* [http://w140.com/Nucl_Instrum_Methods_TD_Induct_effects_1968.pdf Inductance Effects on Capacitive Loading of a Tunnel Diode]] | |||
* http://w140.com/ragsdale_661_1963.pdf | |||
}} | |||
The Tektronix 661 is a [[sampling oscilloscope]] that was [[introduced in 1961]]. | The Tektronix 661 is a [[sampling oscilloscope]] that was [[introduced in 1961]]. | ||
It accepts two plug-ins: a sampling unit and a timing unit. | It accepts two plug-ins: a sampling unit and a timing unit. | ||
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produces an internal trigger signal. | produces an internal trigger signal. | ||
* An external trigger signal can be fed to the timing unit via its front panel. | * An external trigger signal can be fed to the timing unit via its front panel. | ||
* The timing unit can be operated in in free-running mode and the resulting pulse signal | * The timing unit can be operated in in free-running mode and the resulting pulse signal can be the stimulus for the device under test. This mode is similar to a TDR. | ||
can be the stimulus for the device under test. This mode is similar to a TDR. | |||
* The calibration signal generator in the 661 can be used as trigger source, as described below. | * The calibration signal generator in the 661 can be used as trigger source, as described below. | ||
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The Tektronix 012-064 is a plug-in extension cable for the 661. | The Tektronix 012-064 is a plug-in extension cable for the 661. | ||
==Specifications== | |||
==Pictures== | |||
<gallery> | <gallery> | ||
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File:Tek 661 extension.JPG|012-064 plug-in extension cable for 661 | File:Tek 661 extension.JPG|012-064 plug-in extension cable for 661 | ||
</gallery> | </gallery> | ||
[[Category:Sampling scopes]] | |||
[[Category:Tube scopes]] | |||
[[Category:Specifications needed]] | |||