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IM AQ6370E-02EN
3.7 Resolution Calibration
Procedure
The resolution of the AQ6370E can be calibrated using a light source that you provide.
Connecting the External Light Source
1.
Turn on the AQ6370E.
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 AQ6370E’s optical input
connectorusinga9.5/125μmSM(singlemode)opticalfiber.
Light source
Optical fiber
AQ6370E
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.
6.
Press SYSTEM. The SYSTEM menu is displayed.
7.
Tap the Res BW Calibration. A resolution calibration 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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