Keysight Technologies 8163A User Manual page 143

5 Tunable Lasers
142
In <Automatic> Attenuation Mode, the laser output power, and therefore
the Analog Output signal, is not linearly proportional to the output power.
This is because the actual output optical power is derived by the optimum
combination of the laser output power and the attenuation.
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
1 Press [Menu], move to <BNC Output> and press [OK].
2 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.
8163A/B, 8164A/B, 8166A/B User's Guide