The PM3310 and PM3311 are digital storage oscilloscopes which offer a quite unique range of display and analysis facilities. Basically, they "sample" the signal in order to make the analog-to digital converion and then storge the digital signal in a semiconductor memory. Unlike conventional storage which fades away, this technique offers the facility of permanent storage plus the ability to change certain display parameters after the signal has been captured.
In this type of instrument different signals, or different parts of the same signal, can be placed in one of four memories and be displayed simultaneously. Since both channels can be stored, this allows up to 8 traces to be displayed.
