821
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The Tektronix 821 is a 4-bit word recognizer accessory for triggering a scope on a combination of digital signals.
The 821 has a LEMO S-series connector by which it can be powered from the scope's probe power socket (5 V, 300 mA). Up to four 821s can be cascaded for up to 16 input bits (only one can be powered by a scope).
Links
Documents referencing 821
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1974 V6 N2.pdf | Article | Triggering the oscilloscope from logic signals | Bob Beville | 1974 | 821 |
Prices
| Year | Catalog price | In 2026 dollars |
|---|---|---|
| 1975 | $200 | ~$1,200 |
