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321: Difference between revisions
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discontinued=1972 | | discontinued=1972 | | ||
manuals= | manuals= | ||
*[ | *[[Media:070-196.pdf|Tektronix 321 Manual]] | ||
*[http://bama.edebris.com/manuals/tek/321a/ Tektronix 321A manual] | *[http://bama.edebris.com/manuals/tek/321a/ Tektronix 321A manual] | ||
*[http://w140.com/tek_070-0425-01_type_321a_sn_100-5999_ocr.pdf Tektronix 321A Manual sn 100 to 5999 (PDF, OCR)] | *[http://w140.com/tek_070-0425-01_type_321a_sn_100-5999_ocr.pdf Tektronix 321A Manual sn 100 to 5999 (PDF, OCR)] | ||
*[http://w140.com/tek_fcp/tek_type_321_factory_cal_proc.pdf Tektronix 321 factory calibration procedure] | *[http://w140.com/tek_fcp/tek_type_321_factory_cal_proc.pdf Tektronix 321 factory calibration procedure] | ||
*[[Media:Tek 321 irb.pdf|Tektronix 321 Instrument Reference Book (PDF, OCR)]] | |||
*Needed: 321A SN 6000 up | *Needed: 321A SN 6000 up | ||
* [[Media:070-425.pdf|Tektronix 321A Manual (PDF, OCR)]] | * [[Media:070-425.pdf|Tektronix 321A Manual (PDF, OCR, bad-OCR)]] | ||
* [[Media:tek_321_fcp.pdf|Tektronix 321 factory calibration procedure (PDF, OCR)]] | * [[Media:tek_321_fcp.pdf|Tektronix 321 factory calibration procedure (PDF, OCR, bad-OCR)]] | ||
* [[Media:Tek 321a fcp june 1968.pdf]] | |||
}} | }} | ||
The '''Tektronix 321''' is a very compact single-trace, single-timebase portable oscilloscope that is almost completely solid state. | The '''Tektronix 321''' is a very compact single-trace, single-timebase portable oscilloscope that is almost completely solid state. | ||
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The 321 includes several germanium bipolar transistors, which are a known reliability problem. | The 321 includes several germanium bipolar transistors, which are a known reliability problem. | ||
The 321A was [[introduced in 1964]]. The 321 and 321A have slightly different circuits. | The '''321A''' was [[introduced in 1964]]. The 321 and 321A have slightly different circuits. | ||
Early instances of the 321 (sn pre-720) use a [[5718]] peanut tube as the front-end cathode follower. | Early instances of the 321 (sn pre-720) use a [[5718]] peanut tube as the front-end cathode follower. | ||
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{{Spec | Input impedance | 1 MΩ // 35 pF }} | {{Spec | Input impedance | 1 MΩ // 35 pF }} | ||
{{Spec | Calibrator | 0.5 V<sub>p-p</sub>, about 2 kHz }} | {{Spec | Calibrator | 0.5 V<sub>p-p</sub>, about 2 kHz }} | ||
{{Spec | CRT | [[154-433|T3211-31]] or [[154-433]], P31 phosphor, 10 × 6 Div. @ 6.25 mm (0.25"), 4 kV acceleration }} | {{Spec | CRT | [[T3210]] or [[154-433|T3211-31]] or [[154-433]], P31 phosphor, 10 × 6 Div. @ 6.25 mm (0.25"), 4 kV acceleration }} | ||
{{Spec | AC Power | 90—136 V or 180—272 V, 20 W }} | {{Spec | AC Power | 90—136 V or 180—272 V, 20 W }} | ||
{{Spec | DC Power | 11.5—35 V, 8.5 W min., 24.5 W max., 700 mA current typ. }} | {{Spec | DC Power | 11.5—35 V, 8.5 W min., 24.5 W max., 700 mA current typ. }} | ||
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tek-321-round-front.jpg | 321 round front | tek-321-round-front.jpg | 321 round front | ||
tek-321-round-vs-rect.jpg | 321 round vs. rectangular models | tek-321-round-vs-rect.jpg | 321 round vs. rectangular models | ||
321_pair.JPG | 321 and 321A | |||
321_front.jpg|321 front view | 321_front.jpg|321 front view | ||
321_right_case.jpg|321 right case | 321_right_case.jpg|321 right case | ||