Display Of Gain Tilt (Delta) And Gain Slope Results - Viavi 8100 V2 Series User Manual

Chapter 9 OSCA-710 Optical Spectrum Measurement
Trace display functions
Pressing the key
total power measurement.

Display of gain Tilt (delta) and gain slope results

The 8000 V2 Platform can display two additional results:
• The gain tilt, that is to say the difference between the max.and min. values of the
peaks of the complete signal spectrum between the cursors.
• The gain slope measured by a method using a least squares algorithm on all
detected channel using peak power levels or channel power levels.
To display these results above the channels:
1 Press the Advanced button
2 Press Measure A<->B button
3 Select the cursor and set it to the measurement range limits
4 Press Tilt/Slope A<->B
The Gain Tilt is displayed in dB.
The Gain Slope is traced and displayed as value dB/THz or dB/nm according to
the units selected
Disable the Tilt and Slope by pressing the Tilt/Slope button again.
Figure 165 Display of total power, gain tilt and slope of the gain between the cursors
324
Total Power A<-->B
User Manual
a second time removes the result of the
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