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|introduced=1966 | |introduced=1966 | ||
|discontinued=1975 | |discontinued=1975 | ||
|designers=Phil Crosby; | |designers=Phil Crosby;Larry Biggs;Ron Olson;Arend Kastelein | ||
|manuals= | |manuals= | ||
* [[Media:070-0757-00.pdf|Tektronix 556 Manual]] (OCR) | |||
* [[Media:070-0757-00.pdf|Tektronix 556 Manual | |||
<small> | <small> | ||
'''Lecture Notes''' | |||
* [[Media:556 Lecture Notes.pdf|Tektronix 556 Lecture Notes]] | |||
* [[Media:tek_556_lecture_notes.pdf|Tektronix 556 Lecture Notes]] (bad-OCR) | |||
'''Calibration''' | |||
* [[Media:Tek 556 fcp.pdf|Tektronix 556 Factory Calibration Procedure, Jan 1968, SN 2000-up]] | |||
* [[Media:Tek 556 fcp feb 1967.pdf|Tektronix 556 Factory Calibration Procedure, Feb 1967]] | |||
* [[Media:Tek 556 cal outline.pdf|Tektronix 556 Calibration Outline]] | |||
'''Modifications''' | '''Modifications''' | ||
* [[Media:050-0479-01.pdf|Disconnect Diode 556 Serials 100-2989 w/exceptions & R556 100-1989 w/exceptions | * [[Media:050-0479-01.pdf|Disconnect Diode 556 Serials 100-2989 w/exceptions & R556 100-1989 w/exceptions]] | ||
* [[Media:556_Mods.pdf|Digest of all 556 Modifications]] | |||
</small> | </small> | ||
}} | }} | ||
The '''Tektronix 556''' is a 50 MHz [[dual-beam scopes|dual-beam scope]], the successor to the Tektronix [[555]]. | The '''Tektronix 556''' is a 50 MHz [[dual-beam scopes|dual-beam scope]], the successor to the Tektronix [[555]]. It uses [[letter-series and 1-series plug-ins]]. A rack-mount version, the R556, also exists. | ||
It uses [[letter-series and 1-series plug-ins]]. A rack-mount version, the R556, also exists. | |||
The 556, which is wider than the average 500-series scope, fits in the [[205]] cart. | The 556, which is wider than the average 500-series scope, fits in the [[205]] cart. | ||
The 556 was the last 500-series scope produced. It was present in the [ | The 556 was the last 500-series scope produced. It was present in the [[Media:1974_Tektronix_Catalog.pdf|1974 catalog]], but gone in the [[Media:1975_Tektronix_Catalog.pdf|1975 catalog]]. | ||
(The dual-beam [[7844]] had been introduced in 1974.) | (The dual-beam [[7844]] had been introduced in 1974.) | ||
{{ | {{BeginSpecs}} | ||
{{Spec|Bandwidth|≥50 MHz with 1-series plug-ins having a rise time of ≤3.12 ns}} | |||
{{Spec|Rise time|≤6.25 ns (tested with [[067-0521-00]]) }} | |||
{{Spec|Sweep|100 ns/div to 5 s/div, variable ≥2.5:1 (slowest sweep 12.5 s/cm); ×10 magnifier }} | |||
{{Spec|Trigger sensitivity| | |||
* AC: 0.2 div (int) / 200 mV (ext) from 10 Hz to 10 MHz; 1 div / 0.4 V to 50 MHz; LF REJ cut-off 2.5 kHz; HF REJ cut-off 60 kHz | |||
* DC: 0.35 div (int) / 200 mV (ext) from DC to 10 MHz; 2 div or 0.4 V to 50 MHz | |||
}} | |||
{{Spec|Ext. X|0.1 V/div or 1 V/div depending on magnifier setting, DC to ≥400 kHz; max. 50 V}} | |||
{{Spec|Ext. Z|10 V<sub>p-p</sub> for "noticeable modulation intensity", 1 MΩ input}} | |||
{{Spec|Power|90-110/104-126/112-136/180-220/208-252/224-272 V<sub>RMS</sub>, 50 to 60 Hz (400 Hz with fan modification); 840 W/1 kVA max.}} | |||
{{Spec|CRT| [[T5560]]-31-1 ([[154-0500-00]]), P31 standard, 10 kV acceleration; 10 cm × 8 cm }} | |||
{{EndSpecs}} | |||
==Links== | ==Links== | ||
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An aside – in the design of bleeding-edge electronic equipment, there can be a few bright ideas, | An aside – in the design of bleeding-edge electronic equipment, there can be a few bright ideas, | ||
followed by “yeahbuts”, as in, “yeah, but you’re gonna have | followed by “yeahbuts”, as in, “yeah, but you’re gonna have to … “. Some projects end up staggering under the sheer load of the “yeahbuts”. | ||
The recent Boeing 737Max debacle comes to mind with its problems associated with engine placement, ground clearance, and thrust centroids, | The recent Boeing 737Max debacle comes to mind with its problems associated with engine placement, ground clearance, and thrust centroids, | ||
oh, and various kinds of cost issues. | oh, and various kinds of cost issues. | ||
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Tek 556 hvps.png | CRT Circuit | Tek 556 hvps.png | CRT Circuit | ||
</gallery> | </gallery> | ||
{{Parts|556}} | |||
[[Category:500 series scopes]] | [[Category:500 series scopes]] | ||
[[Category:Dual beam scopes]] | [[Category:Dual beam scopes]] | ||