Appendix A: Example of a Vertical Position Accuracy Test
Spreadsheet
This appendix contains a filled-in example of the vertical position accuracy (VPA)
test spreadsheet that is used. (See page 4-10, Check Vertical Position Accuracy.)
The PDF version of the TDS2000C service manual (Tektronix part number
077-0446-00, this manual) includes an empty VPA test spreadsheet for your
convenience. To access and save the te st spreadsheet:
1. Go to the Tektronix Web site (www.tektronix.com) and click the Manuals
link (in the left column on the screen).
2. Enter 077044600 in the Search By Keyword field and then click Go.
3. Click the TDS2000C Series Service Manual link.
4. Click the Download File button and follow on-screen instructions to save the
PDF file to your PC.
5. Open the PDF file in Adobe Reader (version 7 or later).
6. Click the paper clip icon (lower left of the screen) to display the Attachments
panel. If the paper clip icon is not shown, click View > Navigation Panels
> Attachments .
7. Double-click the VPA Test Table.xls file.
8. Click OK in the Launch Attachment dialog box. The test spreadsheet
opens in your spreadsheet application a nd shows the Blank Test Record
spreadsheet tab.
9. Click File > Save As to save the file to a name and location that you enter.
You can now use the spreadsheet to enter values for the vertical position
accuracy test.
Example Filled-In Vertical Position Accuracy Test Spreadsheet
Table A-1: Vertical position accuracy test spreadsheet
AB C DEFGHI
1 Approximate
Test
Voltage
DVM
Measured
Voltage
Oscilloscope
Measured
Voltage
Error Lower
Limit
Upper
Limit
Margin
2 2 .00 0.000
‡‡‡
Volts/div
0.05
3 1 .96 0.000
‡‡‡
4 1 .92 0.000
‡‡‡
Offset
as a
fractional
division
0.1
TDS2000C Series Oscilloscope Service Manual A-1