The Tektronix 222 is a battery-operated portable 10 MHz dual-channel digital storage scope with independently isolated inputs. There is also a 222A.
|Bandwidth||Single-shot: 1 MHz, repetitive signals: 10 MHz|
|Sampling rate||10 MS/s|
|Deflection||5 mV/Div to 50 V/Div (222PS: 50 mV/Div to 500 V/Div)|
|Isolation||±400 V DC or peak AC, each channel (222PS: ±850 V or 600 VAC)|
|Memory depth||512 samples|
|Timebase||50 ns/Div to 20 s/Div|
- DIY Li-Ion battery pack for 222/224 @ YouTube