213

The Tektronix 213 is a miniature portable oscilloscope introduced in 1975. It combines a 3 1/2-digit DMM and a 1MHz single channel scope in one unit. The maximum sweep rate is 0.4 μs/div with ×10 sweep magnifier.

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Miniature portable 1 MHz oscilloscope and TRMS digital multimeter Tektronix 213, front view Produced from to Manuals (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The 213 provides true RMS voltage and current measurements. It is battery or AC line powered.

Specifications

Pictures

In DMM mode
Attenuator and Input Amplifier Schematic
GM and RMS Converter Schematic
Battery Charger and Power Supply Schematic
HV and CRT Schematic
A-D Converter and Character Generator Schematic