How to Use Auxiliary Functions Tunable Lasers
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 143
How to Use Auxiliary Functions
Automatic Realignment
Automatic Realignment realigns the laser cavity after Laser
Protection. You should use Automatic Realignment if you have already
tried to reactivate the laser and to reduce power, and this has been
unsuccessful.
NOTE To get the specified performance, ensure that the warm-up time has
passed before starting realignment.
To realign the laser cavity:
1 Move to the Tunable Laser channel and press Menu.
2 Move to <Realign> and press [OK]. You will see the screen in Figure
81.
3 Wait approximately 30 minutes. This time depends on how much
the wavelength of the instrument has drifted since the last
Automatic Realignment was performed.
NOTE If the TLS recommends Realign (after boot or during a manual lambda
zero), then “UNCAL” is shown on the user interface in both Autocal
modes. No Accuracy class is shown in the Autocal Off mode.
Figure 81 Realign Screen
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