7B52

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Tektronix 7B52
100 MHz Dual Timebase
Tektronix 7B52 (from manual)

Compatible with 7000-series scopes

Produced from 1970 to 1972

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

The Tektronix 7B52 is a 100 MHz dual time base plug-in for 7000-series scopes. It was designed for the 7503 mainframe but is compatible with the entire series.

The 7B52 was only produced for about two years early in the 7000 series life cycle and is therefore quite rare. It was superseded in 1973 by the very similar 7B53A which had the mode selection integrated into the time/Div switch and the combined trigger level/polarity control replaced with separate, concentric knobs.

Key Specifications

Sweep rates 50 ns/Div to 5 s/Div in 1−2−5 sequence
Deflection 10 mV/Div, 100 mV/Div or 1 V/Div, up to 2 MHz
Sensitivity 0.3 Div or 150 mV up to 10 MHz, 1.5 Div or 750 mV up to 100 MHz
Coupling DC, AC (> 30 Hz), AC LF REJ (> 30 kHz), AC HF REJ (30 Hz — 50 kHz)
Input impedance 1 MΩ // 20 pF
Jitter < 1 ns at 75 MHz
Features
  • Dual delayed timebase
  • External trigger inputs for main and delayed
  • Display modes: Main, Intensified, Delayed, Mixed

Operation

The 7B52 supports X−Y mode through the "Amplifier" setting of the Time/Div switch. The Trigger Source determines whether the X signal is taken from a verical plug-in via the internal trigger path or from the external trigger input.

A switch accessible through the side panel allows the user to select the delayed timebase trigger input − either the main trigger signal on pins A20/B20, or an auxiliary trigger signal supplied via pins A21/B21. The 7403N and 7503 mainframes supply the Left Vertical trigger signal on these pins. It is not known if other mainframes supply this signal, and the 7B52 is the only plug-in known to access this signal. (Any information welcome!)

Links

Pictures