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The Tektronix Type 533 is a 15 MHz oscilloscope [[introduced in 1958]]
{{Oscilloscope Sidebar
that uses [[letter-series and 1-series plug-ins]].
|manufacturer=Tektronix
It is similar to a [[535]], but without the second, delayed timebase. Instead, it has a range of horizontal magnifiers from X2 to X100.
|series=500-series scopes
It has 10kV accelerating voltage.
|model=533
It uses 500 watts and weighs 62 pounds.
|summary=15 MHz oscilloscope
|image=Wellenkino 533a.jpg
|caption=Tektronix 533A front
|introduced=1958
|discontinued=1973
|designers=
|manuals=
* [[Media:070-258.pdf|533/533A Instruction]] (OCR, 30M)
* [[Media:tek_533a_catalog.pdf|533A in 1968 Catalog]] (OCR, 2M)
* [[Media:tek_type_533_fcp.pdf|533 Factory Calibration Procedure, September 1959]] (OCR)
* [[Media:Tek 533a fcp dec 1968.pdf|533A Factory Calibration Procedure, December 1968 (OCR)]]
* [[Media:Tek 533a fcp sep 1966.pdf|533A Factory Calibration Procedure, September 1966]] (OCR)
}}
The '''Tektronix Type 533''' is a 15 MHz oscilloscope [[introduced in 1958]] that uses [[letter-series and 1-series plug-ins]].
 
It is similar to a [[535]], but without the second, delayed timebase.
Instead, it has a range of horizontal magnifiers from ×2 to ×100.
 
There is also a rack-mount version, the RM33.
Later 533A have [[BNC connector]]s.
The standard CRT for the 533 and 533A is the [[T5330|T5330-2]].
The difference between the 533 and 533A is only the trigger mode.
 
{{BeginSpecs}}
{{Spec | Bandwidth | DC to 15 MHz (≤ 3 dB) with [[K|Type K plug-in]]  }}
{{Spec | Rise time | 0.024 μs }}
{{Spec | Line Voltage | 108/115/122/216/230/244 V<sub>AC</sub> ±10%, selected via soldering wire on transformer, 50 Hz to 60 Hz }}
{{Spec | Thermal Protection | Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level }}
{{Spec | Power Consumption | 500 W with [[CA| CA plug-in]] }}
{{Spec | Cooling  | AC Fan }}
{{Spec | Trigger Modes (533)| AC/DC/AC Slow, and HF Sync}}
{{Spec | Trigger Modes (533A)| 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}}
 
==Internals==
The vertical amplifier consists of a [[12BY7]] differential amplifier followed
The vertical amplifier consists of a [[12BY7]] differential amplifier followed
by a [[6DJ8]] cathode-follower, followed by a [[6197]] differential (common-cathode)
by a [[6DJ8]] cathode-follower, followed by a [[6197]] differential (common-cathode)
output stage that drives the 200ns L-C [[delay line]], which drives the vertical deflection
output stage that drives the 200 ns L-C [[delay line]], which drives the vertical deflection
plates of the CRT.
plates of the CRT.
Trigger pickoff is taken after the cathode follower stage in the vertical amplifier.
Trigger pickoff is taken after the cathode follower stage in the vertical amplifier.
There is a 6DJ8 differential trigger pickoff amplifier followed by half of a 6DJ8 a
There is a 6DJ8 differential trigger pickoff amplifier followed by half of a 6DJ8 a cathode follower, buffering the trigger signal.   
cathode follower, buffering the trigger signal.   
 
The trigger circuit is a [[6DJ8]] trigger amplifier followed by a 6DJ8 Schmitt trigger.
The trigger circuit is a [[6DJ8]] trigger amplifier followed by a 6DJ8 Schmitt trigger.
Triggering can be from the internal pickoff or from an external signal or "line" trigger,
Triggering can be from the internal pickoff or from an external signal, or "line" trigger via a 6.3 V tap on the power transformer.   
from a 6.3V tap on the power transformer.   
The 533 contains a 128F [[thermal cutoff]].
The high voltages for the CRT, +8650 and -1350 volts, are generated by a 60 kHz Hartley power oscillator and
five [[5642]] high-voltage rectifier diode tubes.


Later 533A have [[Connectors#BNC|BNC connectors]].
The 533 contains a 53 °C (128 °F) [[thermal cutoff]].
The high voltages for the CRT, +8,650 V and −1,350 V, are generated by a 60 kHz Hartley power oscillator and five [[5642]] high-voltage rectifier diode tubes.


* [http://bama.edebris.com/download/tek/533/Tek533A.pdf Tektronix 533 and 533A Manual (PDF)]
==Pictures==
* [http://w140.com/tek_fcp/tek_type_533_factory_cal_proc.pdf Tektronix 533 Factory Calibration Procedure (PDF)]
===533===
<gallery>
Tek 533 sn315 4.jpg|533
Tek 533 sn315 3.jpg|533
Tek 533 sn315 2.jpg|533
Tek 533 sn315 1.jpg|533
<!--Tek 533 sn315 5.jpg|533-->
Tek 533 sn315 6.jpg|533
Tek 533 sn315 7.jpg|533
Tek 533 sn315 8.jpg|533
Tek 533 sn315 9.jpg|533
Tek 533 sn315 10.jpg|533
Tek 533 sn315 11.jpg|533
</gallery>


===533A===
<gallery>
<gallery>
image:2 533A.jpg| front from different 533A
2 533A.jpg| front from different 533A
File:Wellenkino 533a.jpg|533A
Tek 533a front.jpg|533A front
Tek 533a rear.jpg|533A rear
Wellenkino 533a.jpg|533A
Tek 533a delay line 1.jpg|533A delay line
Tek 533a delay line 2.jpg|533A delay line
</gallery>
</gallery>
{{Parts|533}}
{{Parts|533A}}
[[Category:500 series scopes]]
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