EXFO T100S-HP Essential, Руководство пользователя, Страница: 53 / 70

Verifying Performances
T100S-HP User Guide 53
9.4 Verifying Side Mode Suppression
Subject The following procedure verifies the suppression of any wave emissions that are more
than 1 nm away from the selected wavelength.
This procedure requires the use of an optical spectrum analyzer.
Procedure 1. Connect the laser output to the optical spectrum analyzer.
2. Set the laser wavelength at mid-range of the wavelength specification range listed in
section
Technical Specifications, p. 12
.
3. Set the laser output power to 0 dBm
4. Configure the optical spectrum analyzer as follows:
5. Verify that at wavelength deviations larger than 1 nm from the centered wavelength
of the laser peak, the power level of any residual emissions is lower than -45 dB
down from the peak level.
9.5 Verifying Wavelength and Power Calibration
Subject During the course of the performance verification it is possible that the settings for
wavelength and power may not agree with the measured values. If this occurs, you may
calibrate wavelength and power settings from the front panel.
To perform the wavelength and power calibration procedures, refer to section
Calibrating
the Product, p. 37 .
If the performance does not meet warranted specifications, a complete calibration of the
product may be required.
Some calibration steps require the adjustment of internal components including the laser
head.
Therefore, a complete calibration must be performed by authorized EXFO staff only.
Control Setting
Center wavelength Same as laser wavelength
Span 20 nm
Resolution 0.1 nm
Reference level 0 dBm
Level scale 10 dB/div
Scan Repeat