Zeiss humphrey HFA II-i series Field Service Manual page 290

Appendix H
NOTE: The Blue projector voltage drop will display a value greater than zero only when
the printout is obtained immediately after performing the light intensity
calibration/verification.
4 = Camera/Gaze Data
Illumination:
Reflex LED . . . . . . . . . . intensity of the reflex LED
Left LED . . . . . . . . . . . . intensity of the left trial lens LED
Right LED . . . . . . . . . . . intensity of the right trial lens LED
Gain No Trial Lens . . . . . camera gain with trial lens holder down
Gain Trial Lens . . . . . . . camera gain with trial lens holder up
Scale . . . . . . . . . . . . . . . (not currently used)
Video Window:
Source X . . . . . . . . . . . . where the video image will be positioned on the CRT
Source Y . . . . . . . . . . . . where the video image will be positioned on the CRT
Dest X . . . . . . . . . . . . . . where the video insert will be positioned on the CRT
Dest Y . . . . . . . . . . . . . . where the video insert will be positioned on the CRT
Width . . . . . . . . . . . . . . . represents the width of the video insert
Height . . . . . . . . . . . . . . represents the height of the video insert
Gaze Window:
X . . . . . . . . . . . . . . . . . . represents the distance from the left edge of the video
Y . . . . . . . . . . . . . . . . . . represents the distance from the top edge of the video
Width . . . . . . . . . . . . . . . represents the width of the gaze box
Height . . . . . . . . . . . . . . represents the height of the gaze box
Gaze Size:
Height . . . . . . . . . . . . . . conversion factor for converting pixels to millimeters
Width . . . . . . . . . . . . . . . conversion factor for converting pixels to millimeters
Aspect Ratio . . . . . . . . . . normalizing factor to produce a true circle from the
5 = Blue Correction Table.
The Blue Correction Table contains twelve correction values for both the Film wedge
and the Glass wedge. The Blue Correction table for the Film wedge should start at
zero and typically increase to around the mid to high 20's, and sometimes into the
30's The Blue Correction table for the Glass wedge should also start at zero, and
display negative numbers going to –20 or –30 (in the middle of the table).
The values given above are to be used as a general guideline. The final evaluation
for Blue Calibration depends on the light intensity worksheet results.
Field Service Guide
Humphrey Field Analyzer II - i
(inside the video insert)
(inside the video insert)
screen
screen
insert to the left edge of the gaze box
insert to the top edge of the gaze box
data received from the camera
Confidential and Proprietary
H - 2 52235C1105