Tunable Lasers What is a Tunable Laser ?
126 Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Sixth Edition
What is Excessive Power ?
If the text ExP is displayed in a Tunable Laser channel, see Figure 66 , you
have set an output power level that is larger than the laser diode can
produce at the selected wavelength.
Figure 66 Excessive Power
To avoid this you can:
• reduce the optical output power,
• press [Pmax] to select the highest permissible power for the selected
wavelength value, or
• press [Pmax/Swp] to select the highest permissible power for the selected
wavelength sweep.
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