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 | ||
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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]] | |||
Revision as of 02:39, 27 June 2014
The Tektronix 581 is similar to the 585, but with simplified trigger and sweep circuitry.
Like all 580-series scopes, it uses 580-series plug-ins.
It was introduced in 1959.
The vertical signal path of the 581 is the same as that of the 585. It uses the T581 CRT. Type 581 scopes with serial numbers up to 510 use an all-tube trigger circuit.
Starting at serial number 511, the 581 uses tunnel diode triggering.
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 was specified to 100 MHz.
Specifications
please add
Pictures
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early 581
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wrinkle and chrome from early 581.
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TD trigger instead of 6DJ8 trigger.
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early model 581 trigger using tubes
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late model 581 trigger using tunnel diode
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581 vertical output amp driving CRT
