Tektronix CSA8000B Series, User Manual

Page: 173 / 354

Measuring Waveforms
CSA8000B & TDS8000B User Manual
3- 99
Overview Control elements and resources To perform optical compensations (cont.)
Run the dark-
level compensa-
tion
4. In Vert Setup dialog box, click the Dark Level button
under Compensation. See right. Follow the instructions
on screen.
5. Repeat steps 2 and 4 for any additional optical channels
you want to compensate.
Run the user
wavelength gain
compensation
If you want, you can can compensate an optical channel for
a custom input signal:
6. In Vert Setup dialog box, click the User Wavelength
Gain button under Compensation. See right. Follow the
instructions on screen.
7. In the User Wavelength Gain Compensation dialog box,
set the wavelength and power of the signal to be
applied to the channel. See right.
H
User should have an optical signal attached to
module input with a precisely known amount of
optical power. An independently-calibrated average
optical power meter is used to measure this power
precisely. Then signal is connected to the 80C0X
with the same fiber cables.
8. Press the OK button to execute the compensation.
9. Repeat steps 2, 6, and 7 for any additional optical
channels you want to compensate.
End of Procedure