My Digital and Analog Data Begin or End at Different Times

My Digital and Analog Data Begin or End at Different Times

Analog and digital data are captured differently by the VirtualBench mixed signal oscilloscope (MSO). Analog data is stored at a regular interval determined by the time/div setting on your MSO. Digital data is only stored when the data signals being acquired change values, so depending on the activity of the signals you are measuring, the total amount of time stored will vary and may be longer or shorter than the time stored for the analog data.

To get more digital data:

• Turn off any unconnected or unused logic analyzer channels. Noise on these channels can cause extra data to be stored and fill the available buffer faster.
• Remove very high frequency signals from the logic analyzer channels being acquired. High-frequency signals, such as clocks, fill the available buffer faster.
• Ensure that the Maximum Digital Buffer Size setting is set to a high enough value. The highest setting is 1 Million Transitions. The setting is located on the Acquisition submenu of the Digital channel configuration menu.