HP 5528A User Manual

M odel 5528A
Squ aren ess M eas ur e rn c nl s (I n a Verti ca l Pl ane)
PROCEDURE
Sin ce iI Squaren css m eas ur ement req uir es comparing two Straightn ess meas ur ement s, yo u mu .. t
ha ve the mea su re ment da ta from the fir st ax is av ailable fo r co mp ari so n w ith the second -ax js dat a.
Th is is eas ily done with the HP Dimensional M e trol ogy Anal ys is Sys tem. Refer to the Anal ys is
Sys tem 's Op erating M anual and pr og rams for exactly ho w to record and store thc data for th is
seco nd ax i s.
If you don't u se the HP Dimensio nal Me tr o lo gy Anal ys is Sys tem, follow the instructions in
Sec tion 1001 Se c ti on 11 for " PROCEDURE ", und er " MAKI NG A MEASUREME NT ". Th en r ef er to
Sec tion 21 of this Use r 's Cuide to he lp you ca lculate S qu aren ess from yo ur d at a.
What Affects Accuracy?
Sin ce Straightn ess opti cs are us ed in the Squarene ss m eas ureme nl , Squaren ess a cc ur acy is
aff
ec ted by the same f ac tors tha t influence Straightn ess accu ra cy. Se e th e inf ormation in Sec tion
10 of this Use r 's Guid e. In ad dit io n, the Sq uarcn css accu ra cy is also affected by the acc ur acy of thc
Opt ic al Squar e's ca libration number, fl atn ess of the mi rror s in the S quar e. which co ntribut es
a dd itional error like tha t illustrated in Fi g ur e 10-11 , and mi salignment of the input b ea m out of
the optic
al plane of Ihe Squar e. Thes e t!rrors c an be minimi ze d by using the c orr ect calibration
numb er of the Square fo r ca lculation ." proper alignment of the Square, and utili zation of th e
proce
dur es gi ve n in Sect io n 10 of this User's Cuid e.
13-21

HP 5528A Specifications

General

Brand	HP
Model	5528A
Category	Measuring Instruments
Language	English