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{{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]] | |||
==Photos== | |||
<gallery> | <gallery> | ||
Tek 821 1.jpg | Tek 821 1.jpg | ||
Tek 821 description.png | |||
Tek 821 2.jpg | Tek 821 2.jpg | ||
Tek 821 3.jpg | Tek 821 3.jpg | ||
| Line 15: | Line 35: | ||
</gallery> | </gallery> | ||
[[Category:Logic | [[Category:Logic analyzers]] | ||