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Chapter 1 Optical Spectrum Measurement
Result display
The Shift
function
The
measurement
function
24
To zoom the y-axis:
Zooming the y-axis is independent from the cursor settings.
1. Press the Zoom/Shift softkey and select Zoom.
2. Press the
or
The shift functions moves the trace and keeps the cursor on this
positions. Shifting the trace is independent from the cursor settings.
To shift the trace:
1. Press the Zoom/Shift softkey and select Shift.
2. To shift the trace left or right: press the
3. To shift the trace up or down: press the
By setting both cursors two values can be measured:
–
Difference Power (A-B): the difference power between the two
cursor positions
–
Total Power: the total power between the two cursor positions
–
Delta power: slope and difference power between the first and the
last detected channel within the area marked by the cursors.
To measure the Difference Power:
Set the cursors to the desired positions.
The difference power is displayed in the trace result field above the
diagram (A-B).
To measure the Total Power:
1. Set the cursors at the desired positions.
2. Press the softkeys Advanced, Measure A<->B and
Total Power A<->B.
The space between the trace and the two cursors is greyed out and
the power is displayed.
MTS / T-BERD 5800 • COSA-4055 • User Manual 2016.01
key to reduce or enlarge the y-axis.
or
key.
or
key.
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