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Tektronix 3A5
Automatic/Programmable Amplifier
Tektronix 3A5

Compatible with 560-series scopes

Produced from 1965 to 1972

Manuals – Specifications – Links – Pictures

The Tektronix 3A5 is a 15 MHz "Automatic/Programmable Amplifier" plug-in for 560-series scopes. It can automatically seek and select a suitable deflection factor to display an unknown signal.

Range seeking is initiated through a switch on the unit, a button on the P6030 probe, or a signal through the PROGRAM connector (using a 263 programmer).

The 3B5 is a time base with similar features.

Key Specifications

Deflection 1 mV/Div to 50 V/Div , 1−2−5
Bandwidth 15 MHz (50 V/Div to 10 mV/Div), 5 MHz (5 mV/Div to 1 mV/Div)
Seeking circuit frequency range 30 Hz to 20 MHz
Input impedance 1 MΩ // 24 pF