Manual Chapter 5

6-17

After the job has been deﬁned and any soft foot condition corrected (if nec-

essary), select Alignment Data to acquire a new set of shaft readings.

The current laser readings are shown in reverse video just below the title

line of the data acquisition screen. When the laser heads are at one of the

desired clock positions, the angle readouts at the bottom center of the

screen get cross hatches over the numbers, you will hear the analyzer beep

(and the red LED on the front panel of the analyzer will illuminate) each

time a new reading is measured. The heads must be within one degree of

the desired position (average of both angles). In Auto mode the data is auto-

matically placed in the correct clock position and it is averaged continu-

ously until you move out of the desired clock position. You can clear and

restart the averager at any time by pressing the Alt/Delete key while read-

ings are being acquired. The data at the four clock positions is the averaged

value. The position currently highlighted is the one for which data is being

acquired.

If the laser heads can only be rotated to three of the positions, then press

Enter after the third set of data has been collected, and the fourth is auto-

matically calculated. Using only three readings increases the likelihood of

error and does not allow the instrument to check data validity. CSI does not

recommend using only three readings if four are available.