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Tunable Laser Sources
How to Set the Wavelength
To set the power to −10 dBm:
1 Move to power parameter, [P], and press [Pwr unit]. You should
see the power unit menu.
2 Move to <dBm> and press ENTER.
3 Press ENTER to edit the power value.
4 Enter −10.000 and press ENTER.
How to Set the BNC Output Line Mode as an Analog Output
5 Press [Menu], move to <BNC OUTPUT LINE> and press [OK].
6 Move to <V~P>, to choose an analog output signal, press ENTER,
and press [Close].
Attenuator If you want to you use the analog output signal and your Tunable Laser
module has an attenuator installed, it is advisable to use <MANUAL ATT.>
Mode and choose a constant attenuation value.
5.3 How to Set the Wavelength
There are three ways to set the wavelength of the Tunable Laser.
• You can set the wavelength (λ) directly,
• You can set the wavelength from a base wavelength and an
offset in the frequency domain, or
• You can set a wavelength range for the instrument to “sweep”.
Wavelength Range
Every Tunable Laser module has a specified wavelength range. This
range is available for all Tunable Laser modules. See Appendix C
of the HP 81640A/80A/82A/89A Tunable Laser modules User’s
Guide to find your module’s specified range.
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