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 - 33
Field Service Guide
8) Select (camera)
POSITION
. Using the menus, move the trial lens holder image up or
down, and left or right until the cross is just slightly below the centerline (top edge of
the masking tape) of the trial lens holder and centered between the trial lens holder
sides. Then select
STORE .
FIGURE 4.12 Camera Position/Size Calibration
9) To verify the picture size, you will need to view the camera image in a patient test. To
do this: select
DONE
three times, press the
Main Menu icon
, select the
CENTRAL
24-2 test, select right eye and then select PROCEED .
10) Verify that the picture insert does not extend into the circular test area. The picture size
should be about 50 mm x 30 mm (2.0" x 1-3/16").
4.8.6.2 Gaze Position / Size
Purpose
This procedure (models 740 i and 750 i only) ensures that the gaze-tracking box of the video
insert is the right size and is symmetrical around the center cross.
Note ­
The 720i will display the gaze tracking box if the calibration menu is entered. It will
appear in test modes also, but will not appear after the 720i has been restarted.
Special Tools/Equipment Required
P
Tool Stand
P
Fake Eye