Quick Reference 2
Keysight InfiniiVision 1000 X-Series Oscilloscopes User's Guide 69
 
How is mask testing done? InfiniiVision oscilloscopes start mask testing by 
creating a database that is 200 x 640 for the waveform viewing area. Each location 
in the array is designated as either a violation or a pass area. Each time a data 
point from a waveform occurs in a violation area a failure is logged. If Test All was 
selected, every active analog channel is tested against the mask database for 
each acquisition. Over 2 billion failures can be logged per-channel. The number of 
acquisitions tested is also logged and displayed as "# of Tests".
The mask file allows greater resolution than the 200 X 640 database. Some 
quantization of data occurs to reduce the mask file data for display on-screen.