It is similar to a 535, but without the second, delayed timebase. Instead, it has a range of horizontal magnifiers from ×2 to ×100.
|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|
|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|
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, from 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.