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531: Difference between revisions
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early delay line is not "before" the vertical amp, it's in the middle
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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|manufacturer=Tektronix | |||
summary=10 MHz | |series=5000-series scopes | ||
image=Tek 531a g front.jpg | | |model=531 | ||
caption=Tektronix 531 | | |summary=10 MHz oscilloscope | ||
introduced=1954 | | |image=Tek 531a g front.jpg | ||
discontinued=1973 | | |caption=Tektronix 531 | ||
manuals= | |introduced=1954 | ||
|discontinued=1973 | |||
* [ | |designers=Dick Rhiger | ||
* [ | |manuals= | ||
'''531''' | |||
* [[Media:070-203.pdf|Tektronix 531/541 Manual]] (OCR) | |||
* [[Media:tek_531_fcp.pdf|531 Factory Calibration Procedure]] (OCR) | |||
* [[Media: | '''531A''' | ||
* [[Media: | * [[Media:070-301.pdf|Tektronix RM31A Manual]] | ||
* [[Media:tek_531a_fcp.pdf|531A Factory Calibration Procedure]] (OCR) | |||
* [[Media:Tek 531a fcp feb 1968.pdf|531A Factory Calibration Procedure, February 1968]] | |||
* [[Media:Tek 531a mods.pdf|Tektronix 531A Modifications]] | |||
}} | }} | ||
The '''Tektronix Type 531''' is a 10 MHz oscilloscope that accepts [[letter-series and 1-series plug-ins]]. | The '''Tektronix Type 531''' is a 10 MHz oscilloscope that accepts [[letter-series and 1-series plug-ins]]. | ||
It is exactly like Type [[535]] except it does not have the Delayed Sweep (dual timebase) feature. | It is exactly like Type [[535]] except it does not have the Delayed Sweep (dual timebase) feature. | ||
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which has more convenient controls and a slightly faster (15 MHz) vertical amplifier. | which has more convenient controls and a slightly faster (15 MHz) vertical amplifier. | ||
In serial numbers 101 to 7600, the 531's L-C [[delay line]] is in the middle of the vertical amplifier. | |||
In serial numbers 101 to 7600, the 531's L-C [[delay line]] is | |||
In serial numbers 7601 and up, the 531's delay line is between the vertical amplifier and the CRT. | In serial numbers 7601 and up, the 531's delay line is between the vertical amplifier and the CRT. | ||
This change was the result of [[John Kobbe]]'s insight that if the far end of the delay line was an open circuit (which the CRT approximates), | This change was the result of [[John Kobbe]]'s insight that if the far end of the delay line was an open circuit (which the CRT approximates), | ||
the reflected wave could be absorbed at the source end. | the reflected wave could be absorbed at the source end. | ||
This "single termination" approach made it possible to do away with the | This "single termination" approach made it possible to do away with the input chassis. | ||
All Tek scopes | All subsequent Tek scopes with a lumped-constant delay line used this topology. | ||
There is also a rack-mount version, Types RM31 and RM31A. | There is also a rack-mount version, Types RM31 and RM31A. | ||
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The [[532]] is similar to the 531, but designed to be more reliable at the expense of slower risetime. | The [[532]] is similar to the 531, but designed to be more reliable at the expense of slower risetime. | ||
The [[541]] is mostly the same as the 531, but has a [[distributed amplifier|distributed vertical amplifier]] and a different CRT. | The [[541]] is mostly the same as the 531, but has a [[distributed amplifier|distributed vertical amplifier]] | ||
for 30 MHz bandwidth, and a different CRT. | |||
{{BeginSpecs}} | |||
{{SpecGroup | 531 SN 101-7600}} | |||
{{Spec | Bandwidth | DC to 10 MHz (≤ 3 dB) with [[A|Type A plug-in]] }} | |||
{{Spec | Rise time | 0.035 μs }} | |||
{{SpecGroup | 531 SN 7601 up & 531A}} | |||
{{Spec | Bandwidth | DC to 15 MHz (≤ 3 dB) with [[K|Type K plug-in]] }} | |||
{{Spec | Rise time | 0.024 μs }} | |||
{{SpecGroup | all}} | |||
{{Spec | Line Voltage | 108/115/122/216/244 V<sub>AC</sub> ±10%,selected via primary voltage selector and voltage range selector switches, 50 Hz to 60 Hz. }} | |||
{{Spec | Thermal Protection | Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level }} | |||
{{Spec | Power Consumption | 475W with plug-in }} | |||
{{Spec | Cooling | AC Fan }} | |||
{{Spec | Trigger Modes | AC/DC/AC LF Reject, and HF Sync}} | |||
{{Spec | Anode Potential | 10 kV (relative to cathode)}} | |||
{{Spec | Screen Area | 6 cm × 10 cm}} | |||
{{Spec | Construction | Aluminum alloy chassis. Anodized front panel}} | |||
{{Spec | Weight| 61,5 lbs / 27,8 kg }} | |||
{{EndSpecs}} | |||
==Links== | |||
{{Documents|Link=531}} | |||
{{Documents|Link=531A}} | |||
==Pictures== | ==Pictures== | ||
===531=== | |||
<gallery> | |||
531_early_1.jpg | early 531 with [[C|Type 53C]] | |||
Tek 531 brown 1.jpg | Brown-era 531 with [[CA|Type CA]] | |||
Tek 531 brown 2.jpg | Brown-era 531 with [[CA|Type CA]] | |||
Tek 531 brown 3.jpg | Brown-era 531 Rear | |||
</gallery> | |||
===531A=== | |||
<gallery> | <gallery> | ||
Tek 531a g front.jpg | Tek 531a g front.jpg | ||
Tek 531a trace.jpg | |||
Tek 531a on cart.JPG | 531A on [[202]] cart | |||
Tek 531a on cart.jpg | 531A on [[500]]/[[53]]cart | |||
Tek 531a 34 pr.jpg | 531A Overwiev | |||
Tek 531a front.jpg | 531A Front | |||
Tek 531a right top.jpg | 531A Timebase ciruit | |||
Tek 531a right2.jpg | 531A Power supply | |||
Tek 531a right 3.jpg | 531A Rectifier board | |||
Tek 531a right.jpg | 531A Inside left | |||
Tek 531a left close.jpg | 531A Vertical amplifier | |||
Tek 531a left.jpg | 531A Inside right | |||
Tek 531a manual compartment.jpg | manual compartment | |||
</gallery> | |||
===RM31A=== | |||
<gallery> | |||
rm31a.jpg | RM31A | rm31a.jpg | RM31A | ||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|531}} | |||
{{Parts|531A}} | |||
{{Parts|RM31A}} | |||
[[Category:500 series scopes]] | [[Category:500 series scopes]] | ||