There have two way to capture on screen waveform to text format;
1. Using the ":ACQuire<X>:MEMory?" command (Ref. attached p.27)
This command allow you to transfer the total waveform data from the acquisition memory.
2. Using the FreeCapture PC software
Using this free of charge PC software you can easily acquire the waveform data from GDS-820/840 digital storage oscilloscope to personal
computer via RS-232RS-232 or GPIB port The waveform data can also be saved into several graphic formats perfect for data presentation use
This software please download from following link;
http://www.gwinstek.com/html/en/downloadsearch-e.asp?keywords=gds-820s
