821: Difference between revisions

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[[File:Tek821.jpg|350px|thumb|right]]
{{Instrument Sidebar
|manufacturer=Tektronix
|model=821
|class=Logic Analyzer
|series=
|summary=4-bit word recognizer accessory
|image=Tek821.jpg
|caption=Tektronix 821
|introduced=1974
|discontinued=(?)
|designers=
|manuals=
* ''please add'' [[Category:Manual needed]]
}}
The '''Tektronix 821''' is a 4-bit word recognizer accessory for triggering a scope on a combination of digital signals.   
The '''Tektronix 821''' is a 4-bit word recognizer accessory for triggering a scope on a combination of digital signals.   


The 821 can be powered from the scope's probe power socket.  Up to four 821s can be cascaded for up to 16 input bits.
The 821 has a [[LEMO S-series connector]] by which it can be powered from the scope's probe power socket.   
Up to four 821s can be cascaded for up to 16 input bits.


==Links==
==Links==
* [http://w140.com/tekscope_scans/Indiv_Issue_Scans/6-2_mar_apr_1974.pdf TekScope Vol. 6 No. 2 Mar-Apr 1974, pp. 12+]
* [http://w140.com/tekscope_scans/Indiv_Issue_Scans/6-2_mar_apr_1974.pdf TekScope Vol. 6 No. 2 Mar-Apr 1974, pp. 12+]
* [[Media:Tek 821 description.pdf|Tek 821 Description (PDF)]]


==See Also==
* [[7A42]]


[[Category:Accessories]]
==Photos==
[[Category:Introduced in 1974]]
<gallery>
Tek 821 1.jpg
Tek 821 description.png
Tek 821 2.jpg
Tek 821 3.jpg
Tek 821 4.jpg
Tek 821 5.jpg
</gallery>
 
[[Category:Logic analyzers]]