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(A model to 1972) |
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title=Tektronix 531| | title=Tektronix 531| | ||
summary=10 MHz scope | | summary=10 MHz scope | | ||
image=Tek 531a front.jpg | | image=Tek 531a g front.jpg | | ||
caption=Tektronix 531 | | caption=Tektronix 531 | | ||
introduced=1954 | | introduced=1954 | | ||
discontinued= | discontinued=1973 | | ||
manuals= | manuals= | ||
* [http://bama.edebris.com/download/tek/531_541/531_541.djvu Tektronix 531/541 Manual (DjVu)] | * [http://bama.edebris.com/download/tek/531_541/531_541.djvu Tektronix 531/541 Manual (DjVu)] | ||
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* [http://w140.com/tek_fcp/tek_type_531_factory_cal_proc.pdf Tektronix 531 Factory Calibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_531_factory_cal_proc.pdf Tektronix 531 Factory Calibration Procedure (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_531a_factory_cal_proc.pdf Tektronix 531A Factory Calibration Procedure (PDF)] | * [http://w140.com/tek_fcp/tek_type_531a_factory_cal_proc.pdf Tektronix 531A Factory Calibration Procedure (PDF)] | ||
* [[Media:tek_531_fcp.pdf|Tektronix 531 Factory Calibration Procedure (PDF, OCR)]] | |||
* [[Media:tek_531a_fcp.pdf|Tektronix 531A Factory Calibration Procedure (PDF, OCR)]] | |||
}} | }} | ||
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 '''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 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It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, and [[introduced in 1959|superseded in 1959]] by the Type 531A, | It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, | ||
and [[introduced in 1959|superseded in 1959]] by the Type 531A, | |||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. | ||
531s with below S/N 7950 have DuMont [[154-081|5BGP2]] instead of Tektronix [[T533P2]]. | 531s with below S/N 7950 have DuMont [[154-081|5BGP2]] instead of Tektronix [[T5330|T533P2]]. | ||
In serial numbers 101 to 7600, the 531's L-C [[delay line]] is before the vertical amplifier. | In serial numbers 101 to 7600, the 531's L-C [[delay line]] is before the vertical amplifier. | ||
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), | |||
the reflected wave could be absorbed at the source end. | |||
This "single termination" approach made it possible to do away with the output chassis. | |||
All Tek scopes using a lumped-constant delay line went to this topology. | |||
There is also a rack-mount | 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 [[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. | |||
==Pictures== | {{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}} | |||
{{Spec | Screen Area | 6 cm × 10 cm}} | |||
{{Spec | Construction | Aluminum alloy chassis. Anodized front panel}} | |||
{{Spec | Weight| 61,5 lbs / 27,8 kg }} | |||
{{EndSpecs}} | |||
==Pictures of 531== | |||
<gallery> | <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> | </gallery> | ||
==Pictures of 531A== | |||
<gallery> | |||
Tek 531a g front.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> | |||
==Pictures of RM31A== | |||
<gallery> | |||
rm31a.jpg | RM31A | |||
</gallery> | |||
[[Category:500 series scopes]] | [[Category:500 series scopes]] | ||