Swapping Overlay Traces; Changing The Traces Position - Viavi 8100 V2 Series User Manual

Chapter 8 Optical Spectrum Measurement
Overlay trace function
Figure 146 OSA - Overlaid traces

Swapping overlay traces

Measurements can only be made on the active trace and not on overlaid traces. To make
measurements on a trace in overlay, it must first be swapped with the active trace.
To do this:
1 Press the
2 Press the
or
Click on the upper bar, with signature of the measurement and cursor information
(next to Mini-trace).

Changing the traces position

Once a trace is displayed in overlay, the traces can be adjusted according to the Y axis:
1 Press Advanced > Overlay menu keys.
2 Select the adjustment according to Y axis:
• Y Reset: all traces are on the same level at the intersection with the active cursor.
• Y Shift: Each trace is shifted from 5 dB from the other.
• Y Exact: the traces displayed are on the same position according to their injec-
tion level.
270
Trace key,
and keys, as many times as necessary.
User Manual 78000010220 Rev. 024