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7.11 Measurement of Level Fluctuations in Single-
Wavelength Light (0 nm Sweeping)
Procedure
IM 735302-01E
This function measures changes over time in the level of a specific wavelength level. It is
useful for purposes such as optical axis alignment when connecting an optical fiber to a
light source. The following discussion pertains to an example in which the spatial light of
an He-Ne gas laser (1152.274 nm) is input to an optical fiber.
Setting the Center Wavelength to 1152.274 nm
1.
Press CENTER. The soft key menu for setting the center wavelength appears.
2.
Press the CENTER WL soft key. The center wavelength setting screen is
displayed.
3.
Enter a center wavelength of 1152.274 nm using the rotary knob or numeric key
pad.
4.
Press nm/ENTER.
Setting the Resolution to 2.000 nm
5.
Press SETUP. The soft key menu for sweep condition settings appears.
6.
Press the RESOLUTION soft key. The resolution selection menu is displayed.
7.
Press the 2.000nm soft key.
8.
Press nm/ENTER.
Setting the Sweep Width to 0 nm
9.
Press SPAN. The soft key menu for setting the sweep width appears.
10.
Press the SPAN WL soft key. The sweep width setting screen is displayed.
11.
Enter a sweep width of 0 nm using the rotary knob or numeric key pad.
12.
Press nm/ENTER. Set the sweep width to 0 nm. The measurement start
wavelength, measurement center wavelength, and measurement stop wavelength
are all set to 1152.274 nm.
Setting the Sweep Time
13.
Press the 0 nm SWEEP TIME soft key. A screen for specifying the sweep time is
displayed.
14.
Enter a numerical value using the rotary knob or numeric key pad, then press
nm/ENTER.
15.
Press SWEEP, followed by the REPEAT soft key. Sweeping begins.
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App
Index
7-39
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