Checking Alignment For Beam Strength - HP 5528A User Manual

Model 5528A
Dista nce Measureme nts
OISTANCE INTERFEROMETER WITH TARGET
NOTE: THE TARGET SHOULD BE POSIT IONED WITH
THE 3MM HOLE UPPERMOST ON THE INTERFERO-
METER AND WITH THE CROSSHAIRS UPPERMOST
ON THE RETROREFLECTOR .
DISTANCE RETROREFLECTOR WITH TAAGET
Figure 6-7.
Inferferomeler and Retroreflec!or, wifh
largels
Checking Alignment for Beam Strength
1. You are now ready to make sure you have sufficient beam strength over the full length of travel.
2. Open both laser Head ports to their largest openings.
3. Move the Optics over their full travel length while watching the BEAM STRENGTH meter.
Any reading in the meter's green area indicates sufficient beam strength.
4. If the meter's reading goes into the red area al any time, return the Oplics to their "nea r-end-
of-travel" position and reposition them so their return dots overlap on the laser He .. d's
crosshair target (after you rolale the target into posi tion at the return port and rotate the sma ll
aperture into position at the exit pori ). Then repea t both alignment checks.
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