Difference between revisions of "531"

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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=1972 |
+
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It was [[introduced in 1954|introduced in March 1954]] simultaneously with the Type 535, and [[introduced in 1959|superseded in 1959]] by the Type 531A,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and [[introduced in 1959|superseded in 1959]] by the Type 531A,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. ''(What was the reason for this change?)''
+
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 531A, Type RM31A. The RM31A has a sliding chassis so that the scope can be serviced without removing it from a rack.   
+
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]] and a different CRT.
+
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.
  
==Specifications==
 
  
[[Category:Specifications needed]] ''please add''
 
  
==Pictures==
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{{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>
File:531_early_1.jpg        | early 531
+
531_early_1.jpg        | early 531 with [[C|Type 53C]]
File:rm31a.jpg              | RM31A
+
Tek 531 brown 1.jpg | Brown-era 531 with [[CA|Type CA]]
File:Tek 531a on cart.JPG    | 531A on cart
+
Tek 531 brown 2.jpg | Brown-era 531 with [[CA|Type CA]]
File:Tek 531a 34 pr.jpg      | 531A
+
Tek 531 brown 3.jpg | Brown-era 531 Rear
File:Tek 531a front.jpg      | 531A
 
File:Tek 531a right top.jpg  | 531A
 
File:Tek 531a right2.jpg    | 531A
 
File:Tek 531a right 3.jpg    | 531A
 
File:Tek 531a right.jpg      | 531A
 
File:Tek 531a left close.jpg | 531A
 
File:Tek 531a left.jpg      | 531A
 
File:Tek 531 brown 1.jpg | Brown-era 531 with [[CA|Type CA]]
 
File:Tek 531 brown 2.jpg | Brown-era 531 with [[CA|Type CA]]
 
File: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
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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]]

Latest revision as of 07:49, 23 November 2018

Manuals – Specifications – Links – Pictures

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. 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.

531s with below S/N 7950 have DuMont 5BGP2 instead of Tektronix T533P2.

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. 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 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.


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
Screen Area 6 cm × 10 cm
Construction Aluminum alloy chassis. Anodized front panel
Weight 61,5 lbs / 27,8 kg


Pictures of 531

Pictures of 531A

Pictures of RM31A