Zeiss humphrey HFA II-i series, Руководство по обслуживанию на месте

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Humphrey Field Analyzer II - i Adjustment / Calibration
Confidential and Proprietary
52235C1105 4 - 19
Field Service Guide
Special Tools/Equipment Required
P
Spot Positioning Cross Fixture ("cross tool")
P
Drafting Tape
Setup
1) Remove the front cover assembly (Section 3.2). Refer to Figure 4-7.
2) Insert the center pin of the cross tool into the central fixation hole in the bowl and hold
it in place; then attach the horizontal band of the cross tool as follows:
a) Fit the locating hole at each end of the horizontal band of the tool over the corre-
sponding pin or tab on the outer edge of the bowl.
b) While pressing the horizontal band against the bowl, apply a short piece of
drafting tape halfway out on each horizontal leg of the cross tool to hold it flat
against the bowl surface.
3) Position and tape the vertical band of the cross tool, using the small hole in the center
bottom edge of the bowl as reference.
Procedure
1) From the Mechanical Calibration menu, select
TARGET.
2) Verify that for each of the 6 selections on the Target Verification menu, the size III
stimulus falls within the corresponding dotted circle on the cross tool.
FIGURE 4-7. Spot Positioning Cross Fixture