Figure 4-1: Example Of A Line Graph For The Vertical Position Accuracy Test - Tektronix TDS2022C Technical Reference

Figure 4-1: Example of a line graph for the Vertical Position Accuracy test

TDS2000C Series Oscilloscope Service Manual
Data verification. To verify data, set the spreadsheet to present a line graph of
columns D, E, and F. Verify that no error values (the blue line in the center) go
above the yellow line (upper line), or below the purple line (lower line). For
calculations involved in this example, refer to the data in the previous table (see
step 1).
Performance Verification
4–13