124 Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide
5 Math Waveforms
 
If a measurement cannot be made for part of a waveform, the trend function 
output is a hole (that is, no value) until a measurement can be made.
Chart Logic Bus Timing
The Chart Logic Bus Timing function displays bus data values as an analog 
waveform (like a D/A conversion). When the bus value is transitioning, the 
function output is the bus's last stable state.
Use the Units/Code softkey to specify the analog value equivalent of each 
increment in the bus data value.
Use the 0 Offset softkey to specify the analog value equivalent of a bus data value 
of zero.
Use the Units softkey to specify the type of values the bus data represents (volts, 
amps, etc.).
See Also • “Chart Logic Bus State" on page 125
Figure 19 Example of Chart Logic Bus Timing