1A5

The Tektronix Type 1A5 is a differential amplifier plug-in for 500-series scopes. It was designed by Bill DeVey after consultation with John Kobbe.

Manuals – Specifications – Links – Pictures

It has an Amphenol 165 series connector on the front panel for direct connection of the Type P6046 Active Differential Probe.

Type 1A5 was introduced in 1967, replacing Types W and Z, and lasted until the end of the 500-series scope line.

Key Specifications

Bandwidth	50 MHz down to 5 mV/div, 40 MHz at 1 mV/div
Deflection	1 mV/div to 20 V/div, 1−2−5
Common-mode rejection	20,000:1 DC to 100kHz, 10,000:1 up to 1 MHz, 200:1 at 20 MHz

Like most Tektronix differential plug-ins, the 1A5 has three modes: V_A−V_C, V_A−V_B, and V_C−V_B.

V_C is controlled by a ten-turn potentiometer and can vary from −5 V to +5 V (0.5 V on the 5 V/div to 20 V/div ranges).

Pictures

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