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Humphrey Field Analyzer II - i
Adjustment / Calibration
Confidential and Proprietary
52235C1105
4 - 7
Field Service Guide
4.8
Calibration
The
Calibration
main menu is the principle, or main menu for performing instrument
verification and calibration. The menu consists of the following selections:
Verifica
tio
n
— Used to verify the Before and After light intensity calibration.
Mechanical —
Used to calibrate the projection and turret assemblies.
Intensity
— Used to calibrate the spot and bowl intensities.
Print Cal Values
—
Used to print out the EEPROM settings and wedge values.
Miscellaneous
— Used only by Manufacturing.
Camera
— Used to calibrate the CCD camera and gaze illuminators.
Save
— Used to save the calibration data to the floppy calibration diskette.
Restore
—
Used to restore the calibration data from the floppy calibration diskette to
the hard drive.
4.8.1
Verification
(Obtaining
Before
and
After
Light Intensity
Calibration Values)
4.8.1.1
Intensity / Spot Ratio
Purpose
The purpose of this procedure is to determine the current state of the instrument light
intensity calibration, both before and after servicing the instrument. The
before
and
after
information is compared to determine if the instrument has had any significant light intensity
calibration shift during service.
Special Tools/Equipment Required
P
Soligor Light Meter Kit
P
Digital Multimeter, Fluke 8060A or equivalent
P
Bowl Shroud
P
Small Flashlight
Prerequisites
P
All white intensity related calibrations must be performed with dim room light. The
dimmer the instrument light, the darker the room must be. Because of the very low
blue light levels, blue-yellow calibration requires total darkness. (Use a small flashlight
occasionally to read meters, etc.)
Procedure
NOTES:
1.
You will print out all values obtained during this procedure. All values are
automatically recorded on the HFA II - i Light Intensisty Verification Data printouts
(
Before service
or
After service
, as appropriate).
Summary of Contents for humphrey HFA II-i series
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Page 424: ...Page 4 FA2i 013A PROPRIETARY and CONFIDENTIAL...
Page 502: ...FA2i 041 Page 3 Figure 2 Press rectangle in Top Left corner...
Page 516: ...Page 2 FA2i 046 Figure 1 Glass Film Wedge Detectors P N 67417 Note Spacing Washer Placement...
Page 517: ...FA2i 046 Page 3 Figure 2 Y Motor Turret Detector P N 67418 Note Spacing Washer Placement...