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Tektronix 75
4 MHz amplifier plug-in
Type 75

Compatible with 560-series scopes

Produced from 1961 to 1964


For the manual, see the 3A75.

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

The Tektronix Type 75 is a 4 MHz amplifier plug-in for 560-series scopes. It was introduced in 1961. Starting at serial number 1120, it was renamed the 3A75.


The sensitivity has 9 calibrated steps from 50 mV/div to 20 V/div. The input uses a UHF connector. The input impedance is 1 MΩ in parallel with 47 pF.