HP 5528A User Manual

ModelS528A
Alignme nt T ec hnique s
~
~~
0
VERTICALLY
/0\
I I'
HORIZONTALLY
Figure 15 -8. Initial La ser Po sir;on
S. look back at the front of the la ser Head for the reflected dol.
,- '===
If the dot docs not appear somewhere on the laser Hcad, hold a sheet of paper (with a holc in
it to allow the laser Head's output beam to pass through it) between the la se r Head and the
mirrored surface. Look for the return beam's dot somewhere on the paper.
6. ROiale th e la ser Head vertica ll y, then horizontally, until the reflected beam is centered on it s
upper f elCh ) porI.
NOTE
The target for auto reflection is the elCit pori, in stead of the return
port, since
the return bcam is not offset by a Retroreflector.
If yo u turn the las er Head too far, the beam may mo vco ff the autorcflecling su rfa ce. If this
happen
s, translat e the la ser Head until the beam again hit s the aUlorefiecling surface.
Your la ser Measurement Sys tem is now aligned. Unlike the "gun sight" or "overlapping
dot s" method s, there is no progressive alignment for autoreflectfon tcchniques.
7. Remove the autoreflector and install the optic; a5 outlined In each particular measurement
section.

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English