Chapter 1
Optical Spectrum Measurement
Result display
MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
25
3.
Pressing the key
Total Power A<->B
a second time removes the
result of the total power measurement.
To measure the Delta Power:
1.
Set the cursors to the desired positions. At least two detected
channels must be between the cursors.
2.
Press the softkeys
Advanced
,
Measure A<->B
and
Delta Power A<->B
.
The first and last maximum are linked by a solid line. The slope in
[dB/nm] and the difference power in [dB] are stated below the line.
Fig. 12
Example of Total Power measurement
Fig. 13
Example of Delta Power measurement