Tektronix SPG8000 Technical Reference page 114

Performance verification
100
15. Calculate the corrected RMS amplitude of the sine wave:
SQRT((cycle RMS)
2
16. Record the result in the test record.
17. Calculate the total attenuation factor for the system. This is the DMM
measurement divided by the corrected RMS sine wave amplitude. This
attenuation factor will be used after measuring the signal outputs in the next
test.
18. Record the attenuation factor value in the test record.
19. Enter the attenuation factor value into the oscilloscope:
a. On the oscilloscope, press the SETUP DIALOG button.
b. Select the "Vert" tab from the top of the setup page.
c. Select the "External Attenuation" box, and then enter the attenuation
factor calculated in step 17 above.
- (cycle mean) )
2
SPG8000 Specifications and Performance Verification