Oscilloscopes

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The digital storage oscilloscope, or DSO for short, is now the preferred type for most industrial applications, although simple analog CROs are still used by hobbyists. It replaces the unreliable storage method used in analog storage scopes with digital memory, which can store data as long as required without degradation. It also allows complex processing of the signal by high-speed digital signal processing circuits.

Advantages over the analog oscilloscope:

Brighter and bigger display with color to distinguish multiple traces

Equivalent time sampling and Average across consecutive samples or scans lead to higher resolution down to µV

Peak detection

Pre-trigger (events before the trigger occurs can be displayed)

Easy pan and zoom across multiple stored traces allows beginners to work without a trigger

This needs a fast reaction of the display (some scopes have 1 ms delay)

The knobs have to be large and turn smoothly

Also slow traces like the temperature variation across a day can be recorded

The memory of the oscilloscope can be arranged not only as a one-dimensional list but also as a two-dimensional array to simulate a phosphor screen. The digital technique allows a quantitative analysis (E.g. Eye diagram)

Allows for automation, though most models lock the access to their software

Atten Oscilloscopes (2)
Hantek Oscilloscope (11)
Rigol Oscilloscopes (24)

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