Agilent Technologies 5517B

12 Agilent 5517B/BL/C/D/DL/FL User’s Guide
2 Laser Head at a Glance
Laser Head Front Panel a t a Glan ce
1 Shutter
The shutter, also known as the aperture ring, allows for three
aperture settings:
Open — used during normal operation.
Reduced — used during alignment of the measurement axes.
Closed — closes the aperture.
LASER LIGHT EMISSION FROM THIS APERTURE
1
AVOID EXPOSURE