212

The Tektronix 212 is a small portable analog dual-trace CRT oscilloscope with a bandwidth of 500 kHz.

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500 kHz miniature dual channel analog scope Tektronix 212 Produced from (?) to (?) Manuals Tektronix 212 Manual (PDF) (All manuals in PDF format unless noted otherwise)

Key Specifications

Bandwidth	500 kHz (reduced to 400/300/100 kHz in 5/2/1 mV/Div ranges)
Deflection	1 mV/Div to 50 V/Div, 1-2-5, and variable (up to 125 V/Div)
Sweep	500 ms/Div to 5 μS/Div, 1-2-5, and variable magnifier 1-5 ×
Input impedance	1 MΩ // 140 pF (160 pF below 100 mV/Div)
Trigger sensitivity	0.2 Div internal, 1 V external
CRT	6 × 10 divisions of 0.203" (5.16 mm), 154-0699-00 tube, P31 phosphor, 1 kV acceleration
Power	10 internal size A NiCd cells, 3-5 hour operation, or AC line, < 3 W