6-26
IM AQ6370D-01EN
6.8 Power Density Trace
Procedure
1.
Press TRACE. The soft key menu for trace settings appears.
2.
Press the ACTIVE TRACE soft key. Traces A through G appear in soft keys.
3.
Press the Trace F soft key. The Trace F setting menu is displayed.
4.
Press the VIEW F DISP/BLANK soft key and select DISP. Each time you press
the soft key, it toggles between DISP and BLANK.
5.
Press the CALCULATE F soft key.
6.
Press the POWER/NBW soft key.
7.
To display the power density of each trace, press the corresponding key as shown
below.
Power density of trace A → F=PWR/NBW A
Power density of trace B → F=PWR/NBW B
Power density of trace C → F=PWR/NBW C
Power density of trace D → F=PWR/NBW D
Power density of trace E → F=PWR/NBW E
8.
Press the BANDWIDTH soft key. The bandwidth setting menu appears.
9.
Enter the value using the rotary knob, arrow keys, or numeric keypad.
10.
Press ENTER.
Explanation
In setting the unit (LEVEL UNIT) of the vertical axis in section 5.2, “Horizontal/Vertical
Axis Settings,” the power per nanometer can be displayed, but here the power per the
specified band in the range of 0.1 nm to 10 nm in 0.1 nm resolution can be displayed.
With the analysis function using the ANALYSIS key, only PMD can be analyzed.
Level Axis Unit (Section 5.2)
Level axis units, namely dBm/nm and mW/nm, are units for displaying power per
nanometer. If trace F is set to POWER/NBW, the unit is automatically changed to dBm or
mW.
If trace F is set to POWER/NBW and you change the level axis to dBm/nm or mW/nm,
trace F enters FIX mode, and the waveform is no longer updated.
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