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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) | |||
'''531A''' | |||
* [[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]]. | |||
It is exactly like Type [[535]] except it does not have the Delayed Sweep (dual timebase) feature. | |||
The | The designer was [[Dick Rhiger]]. | ||
The 531 and 535 were the first Tektronix scopes to accept plug-ins. | The 531 and 535 were the first Tektronix scopes to accept plug-ins. | ||
It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, and [[introduced in 1959|superseded in 1959]] by the Type 531A, | It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, | ||
and [[introduced in 1959|superseded in 1959]] by the Type 531A, | |||
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 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), | |||
the reflected wave could be absorbed at the source end. | |||
This "single termination" approach made it possible to do away with the input chassis. | |||
All subsequent Tek scopes with a lumped-constant delay line used this topology. | |||
There is also a rack-mount version, Types RM31 and RM31A. | |||
They have a sliding chassis so that the scope can be serviced without removing it from a rack. | |||
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]] | |||
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== | ||
===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> | </gallery> | ||
===RM31A=== | |||
<gallery> | |||
rm31a.jpg | RM31A | |||
</gallery> | |||
==Components== | |||
{{Parts|531}} | |||
{{Parts|531A}} | |||
{{Parts|RM31A}} | |||
[[Category:500 series scopes]] | [[Category:500 series scopes]] |
Latest revision as of 12:43, 1 July 2024
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.
The designer was Dick Rhiger.
The 531 and 535 were the first Tektronix scopes to accept plug-ins. It was introduced in March 1954 simultaneously with the Type 535, and superseded in 1959 by the Type 531A, 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 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), the reflected wave could be absorbed at the source end. This "single termination" approach made it possible to do away with the input chassis. All subsequent Tek scopes with a lumped-constant delay line used this topology.
There is also a rack-mount version, Types RM31 and RM31A. They have a sliding chassis so that the scope can be serviced without removing it from a rack.
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 vertical amplifier for 30 MHz bandwidth, and a different CRT.
Key Specifications
— 531 SN 101-7600 — | |
Bandwidth | DC to 10 MHz (≤ 3 dB) with Type A plug-in |
Rise time | 0.035 μs |
— 531 SN 7601 up & 531A — | |
Bandwidth | DC to 15 MHz (≤ 3 dB) with Type K plug-in |
Rise time | 0.024 μs |
— all — | |
Line Voltage | 108/115/122/216/244 VAC ±10%,selected via primary voltage selector and voltage range selector switches, 50 Hz to 60 Hz. |
Thermal Protection | Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level |
Power Consumption | 475W with plug-in |
Cooling | AC Fan |
Trigger Modes | AC/DC/AC LF Reject, and HF Sync |
Anode Potential | 10 kV (relative to cathode) |
Screen Area | 6 cm × 10 cm |
Construction | Aluminum alloy chassis. Anodized front panel |
Weight | 61,5 lbs / 27,8 kg |
Links
Documents Referencing 531
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
IBM 223-6725-2.pdf | Application Note | Tektronix oscilloscopes (IBM Customer Engineering Manual) | 1960 | 310 • 310A • 531 • 531A • 535 • 535A • 545A • B • C • CA • D • G |
Documents Referencing 531A
Document | Class | Title | Authors | Year | Links |
---|---|---|---|---|---|
IBM 223-6725-2.pdf | Application Note | Tektronix oscilloscopes (IBM Customer Engineering Manual) | 1960 | 310 • 310A • 531 • 531A • 535 • 535A • 545A • B • C • CA • D • G |
Pictures
531
531A
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-
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531A on 202 cart
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531A Overwiev
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531A Front
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531A Timebase ciruit
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531A Power supply
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531A Rectifier board
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531A Inside left
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531A Vertical amplifier
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531A Inside right
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manual compartment
RM31A
-
RM31A
Components
Some Parts Used in the 531
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
120-037 | 120-037 | Discrete component | power transformer | 531 • 533 |
12AX7 | 154-043 • 154-0043-00 | Vacuum Tube (Dual Triode) | dual triode | 3C66 • 513 • 524 • 531 • 531A • 535 • 536 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 570 • 581 • 581A • 585 • 585A • E • Q • Hickok 1825 |
12BY7A | 154-047 • 154-0047-00 | Vacuum Tube (Pentode) | miniature 6.5 W power pentode | 106 • 163 • 524 • 531 • 533 • 535 • 536 • 541 • 543 • 535 • 545 • 545A • 549 • 555 • 75 • 3A75 • 3B5 |
5651 | 154-052 • 154-0052-00 • 154-0288-00 | Gas Discharge Tube (Voltage regulator) | 87 V voltage reference | 128 • 160 • 310 • 310A • 502 • 503 • 504 • 511A • 512 • 516 • 517 • 524 • 526 • 531 • 531A • 535 • 536 • 541 • 541A • 543 • 543A • 543B • 545 • 545A • 545B • 570 • 549 • 581 • 581A • 585 • 585A |
5BG | 154-0080-00 • 154-0081-00 • 154-0082-00 • 154-0083-00 • 154-0124-00 | CRT | series of 5" CRTs | 513 • 531 • 535 |
6197 | 154-0146-00 | Vacuum Tube (Pentode) | 7.5 W power pentode | 516 • 531 • 533 • 535 • 535A • 547 • 556 • 75 • 3A75 |
6AU5 | 154-021 • 154-0021-00 | Vacuum Tube (Pentode) | 10 W beam power pentode | 507 • 513 • 516 • 517 • 517A • 531 • 535 • 541 • 535 • 545 • 547 • 581 • 581A • 585 • 585A |
6AU6 | 154-0022-00 • 157-0073-00 • 157-0059-00 • 154-0284-00 | Vacuum Tube (Pentode) | RF pentode | 107 • 160 • 181 • 190 • 60 • 2A60 • 72 • 3A72 • 3C66 • 310 • 310A • 316 • 317 • 360 • 502 • 502A • 506 • 511 • 511A • 512 • 513 • 516 • 517 • 517A • 524 • 526 • 529 • RM529 • 531 • 531A • 535 • 536 • 545 • 545A • 546 • 547 • 549 • 555 • 561 • 561A • 561S • 564 • 565 • 567 • 570 • 575 • 581 • 581A • 585 • 585A • 80 • C • CA • Q |
6BQ7A | 154-028 • 154-0028-00 • 157-0022-00 • 157-0003-00 | Vacuum Tube (Dual Triode) | dual triode | 107 • 163 • 181 • 310 • 315 • 316 • 360 • 524 • 531 • 532 • 535 • 536 • 541 • 545 • 570 • T |
6CL6 | 154-031 • 154-0031-00 • 154-0286-00 | Vacuum Tube (Pentode) | 7.5 W power pentode | 132 • 310 • 310A • 316 • 317 • 515 • 524 • 525 • 531 • 535 • 535A • 545 • 545A • 545B • 549 • 570 • 581 • 581A • 585 • 585A • 3A74 |
T51 | 154-0080-00 • 154-0081-00 • 154-0082-00 • 154-0083-00 • 154-0092-00 • 154-0096-00 • 154-0101-00 • 154-0117-00 • 154-0121-00 • 154-0123-00 • 154-0124-00 • 154-0117-00 • 154-0150-00 • 154-0197-00 • 154-0342-00 • 154-0379-00 | CRT | 5" CRT | 513 • 531 • 535 |
Some Parts Used in the 531A
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
12AX7 | 154-043 • 154-0043-00 | Vacuum Tube (Dual Triode) | dual triode | 3C66 • 513 • 524 • 531 • 531A • 535 • 536 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 570 • 581 • 581A • 585 • 585A • E • Q • Hickok 1825 |
5651 | 154-052 • 154-0052-00 • 154-0288-00 | Gas Discharge Tube (Voltage regulator) | 87 V voltage reference | 128 • 160 • 310 • 310A • 502 • 503 • 504 • 511A • 512 • 516 • 517 • 524 • 526 • 531 • 531A • 535 • 536 • 541 • 541A • 543 • 543A • 543B • 545 • 545A • 545B • 570 • 549 • 581 • 581A • 585 • 585A |
6AU6 | 154-0022-00 • 157-0073-00 • 157-0059-00 • 154-0284-00 | Vacuum Tube (Pentode) | RF pentode | 107 • 160 • 181 • 190 • 60 • 2A60 • 72 • 3A72 • 3C66 • 310 • 310A • 316 • 317 • 360 • 502 • 502A • 506 • 511 • 511A • 512 • 513 • 516 • 517 • 517A • 524 • 526 • 529 • RM529 • 531 • 531A • 535 • 536 • 545 • 545A • 546 • 547 • 549 • 555 • 561 • 561A • 561S • 564 • 565 • 567 • 570 • 575 • 581 • 581A • 585 • 585A • 80 • C • CA • Q |
T5330 | 154-0178-00 • 154-0165-00 • 154-0179-00 • 154-0180-00 • 154-0350-00 | CRT | 5" CRT | RM31A • RM33 • RM33A • RM35A • 531A • 533 • 533A • 535A |
Some Parts Used in the RM31A
Part | Part Number(s) | Class | Description | Used in |
---|---|---|---|---|
T5330 | 154-0178-00 • 154-0165-00 • 154-0179-00 • 154-0180-00 • 154-0350-00 | CRT | 5" CRT | RM31A • RM33 • RM33A • RM35A • 531A • 533 • 533A • 535A |