533

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Tektronix 533
15 MHz scope
Tektronix 533A front

Produced from 1958 to 1973

Manuals

{{{manuals}}}

(All files in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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 connectors. The standard CRT for the 533 and 533A is the T5330-2. The difference between the 533 and 533A is only the trigger mode.

Specifications

Bandwidth DC to 15 MHz (≤ 3 dB) with Type K plug-in
Rise time 0.024 μs
Line Voltage 108/115/122/216/230/244 VAC ±10%, selected via soldering wire on transformer, 50 Hz to 60 Hz
Thermal Protection Automatic resetting thermal cutout, in case internal temperature exceeds safe operating level
Power Consumption 500 W with CA plug-in
Cooling AC Fan
Trigger Modes (533) AC/DC/AC Slow, and HF Sync
Trigger Modes (533A) 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

Internals

The vertical amplifier consists of a 12BY7 differential amplifier followed by a 6DJ8 cathode-follower, followed by a 6197 differential (common-cathode) output stage that drives the 200 ns L-C delay line, which drives the vertical deflection plates of the CRT.

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 cathode follower, buffering the trigger signal.

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 via a 6.3 V tap on the power transformer.

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.

Pictures

533

533A


Some Parts used in the 533

Page Class Description Used in
12BY7 Vacuum Tube (Pentode) miniature 6.5 W power pentode 106 531 533 535 536 541 543 535 545 545A 549 555
5642 Vacuum Tube (Diode) directly-heated high-voltage rectifier 360 453 502 502A 504 506 513 515 516 533 533A 535 543 543A 543B 545 545A 545B 547 551 555 556 567 575 581 581A 585 585A 647
6197 Vacuum Tube (Pentode) sharp-cutoff pentode 516 531 533 535 535A 556
6DJ8 Vacuum Tube (Double Triode) dual triode 132 502 502A 503 504 515 516 519 533 535 543 544 545 545A 545B 546 547 549 555 556 565 581 581A 585 585A 661 2A60 2A63 3A8 1121 1A4 67 81 82 86 3B1 3B4 O Telequipment S32A Telequipment D52 Telequipment S52 Telequipment S51 Telequipment Type A
T5330 CRT 5" CRT RM31A RM33 RM33A RM35A 531A 533 533A 535A


Some Parts used in the 533A

Page Class Description Used in
5642 Vacuum Tube (Diode) directly-heated high-voltage rectifier 360 453 502 502A 504 506 513 515 516 533 533A 535 543 543A 543B 545 545A 545B 547 551 555 556 567 575 581 581A 585 585A 647
T5330 CRT 5" CRT RM31A RM33 RM33A RM35A 531A 533 533A 535A