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IM AQ6370D-01EN
Preparing for Measurement
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App
Index
3.8 Resolution Calibration
Procedure
The resolution of the AQ6370D can be calibrated using a light source that you provide.
Connecting the External Light Source
1.
Turn on the AQ6370D.
Turn on the MAIN POWER switch and then press the POWER switch.
For instructions on how to turn on and off the power, see section 3.4.
2.
Connect the external light source’s optical output connector to the AQ6370D’s
optical input connector using a 9.5/125 μm SM (single mode) optical fiber.
Light source
Note
For the light source, use a stabilized single-mode laser light.
Set the optical output power to –20 dBm or higher.
Use a light source with a level stability of 0.1 dBp-p or less.
Use a light source with a line width of 5 MHz or less.
3.
Press SYSTEM. The soft key menu is displayed.
4.
Press the MORE soft key repeatedly until the MORE 4/4 menu is displayed.
5.
Press the RES BW CALIBRATION soft key. A resolution calibration soft key menu
and a message explaining how to perform resolution calibration appear.
The message also contains the wavelength value of the previous resolution
calibration.
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