Instructions

2. Make a spreadsheet approximately as shown in the example in Appendix A. You only need to enter the values for
column A and the equations. The values in columns B, C, D, E, F, and G are examples of the measured or calculated
values.
The PDF version of the technical reference manual (which you can download from www.tektronix.com/manuals),
includes an empty spreadsheet for your convenience. To access and save the test spreadsheet, see the instructions
in Appendix. A: Example of a Vertical Position Accuracy test spreadsheet on page A-1.
3. Connect the oscilloscope, power supply, and voltmeter as shown in the following figure:
4. Set the power supply to the 1.8 V value shown in column A, the Approximate Test Voltage.
5. Adjust the vertical position knob for the DC line to position the line in the center of the screen.
6. Enter the voltage on the voltmeter and on the oscilloscope into the spreadsheet in the appropriate columns, B and C.
7. Repeat steps 4 on page 21 through 6 on page 21 for the values of 1.72 V through 0 V in 0.08 V steps.
8. Swap the connections to the positive terminal of the power supply with those at the negative terminal as shown in the
following figure:
9. Repeat steps 4 on page 21 through 6 on page 21 for the values of -0.08 V through -1.8 V in -0.08 V steps.
10. Enter the Minimum Margin number (cell I16) for the channel tested in the test record.
11. Repeat steps 1 on page 20 through 10 on page 21 for all input channels.
Performance verification
TBS1000 Series Oscilloscopes Series Digital Storage Oscilloscope Technical Reference 21