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581: Difference between revisions
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The Tektronix 581 is similar to the [[585]], but with simplified trigger and sweep circuitry. | {{Oscilloscope Sidebar| | ||
title=Tektronix 581| | |||
image=581_old_1.JPG| | |||
caption=Tektronix 581 (early model) | | |||
years=? — ?| | |||
summary=100 MHz (85 MHz) oscilloscope| | |||
manuals= | |||
* [http://w140.com/tek_581_sn1273.pdf Tektronix 581 Manual (PDF)] | |||
* [http://w140.com/581a_by_matt.pdf Tektronix 581A Manual (PDF)] | |||
}} | |||
The '''Tektronix 581''' is similar to the [[585]], but with simplified trigger and sweep circuitry. | |||
Like all [[580-series_scopes|580-series scopes]], it uses [[580-series_plug-ins|580-series plug-ins]]. | Like all [[580-series_scopes|580-series scopes]], it uses [[580-series_plug-ins|580-series plug-ins]]. | ||
It was [[introduced in 1959]]. | It was [[introduced in 1959]]. | ||
The vertical signal path of the 581 is the same as that of the 585. | The vertical signal path of the 581 is the same as that of the 585. It uses the [[T581]] CRT. | ||
It uses the [[T581]] CRT. | Type 581 scopes with serial numbers up to 510 use an all-tube trigger circuit. | ||
Type 581 scopes with serial numbers up to 510 use an all-tube trigger | |||
Starting at serial number 511, the 581 uses [[tunnel diodes|tunnel diode]] triggering. | Starting at serial number 511, the 581 uses [[tunnel diodes|tunnel diode]] triggering. | ||
A Type 581A was introduced later, and it is specified to have a bandwidth of | A Type 581A was introduced later, and it is specified to have a bandwidth of 85 MHz instead of 100 MHz. | ||
The somewhat relaxed bandwidth specification improved CRT production yield which had been a problem when the scope | The somewhat relaxed bandwidth specification improved CRT production yield which had been a problem when the scope | ||
was specified to | was specified to 100 MHz. | ||
==Specifications== | |||
[[Category:Specifications needed]] ''please add'' | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Image:581_old_1.JPG|early 581 | Image:581_old_1.JPG|early 581 | ||
| Line 27: | Line 39: | ||
File:Tek 581 vertical output amp.png|581 vertical output amp driving CRT | File:Tek 581 vertical output amp.png|581 vertical output amp driving CRT | ||
</gallery> | </gallery> | ||
[[Category:580 series scopes]] | |||