Zeiss HUMPHREY 720i, User Manual

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10-4 CUSTOM TESTING
REV. B 02/03 PN 51680-1 HUMPHREY FIELD ANALYZER II -
i
series
Once deleted, the test pattern cannot be retrieved unless it had been previously copied to an
external floppy disk. Refer to Section 9: “Configuration Backup and Restore” for details. As a
safety measure, it is suggested that you backup the test patterns before deleting any one of
them (should a future need for the test arise).
Note: You may not restore an individual Custom test pattern. All test patterns must be
restored as a group. Also, the test patterns created after the last backup will be lost when a
backup is restored. Therefore, it is recommended that a new floppy disk backup is created
after each button change.
CANCEL
Choosing CANCEL returns you to the Additional Setup screen, without creating or deleting a
Custom test.
5
When CREATE THRESHOLD
TEST or CREATE SCREENING
TEST is chosen, the Custom Point
Options pop-up window appears.
Use the drop-down menus to
select the desired POINT
PATTERN, FIELD SIZE, and
POINT SPACING.
Press SELECTION COMPLETE
when done.
Point Pattern
This allows the user to decide between a Single Point (X, Y) or a Grid point pattern (X, Y).
Single Point (X, Y) is used to create test points one-at-a-time on the test field by entering the
“X” and “Y” coordinates for each point. Grid (X, Y) is used to place an entire square or
rectangular grid of points on the field at one time. There can be a maximum of 248 points in a
test.
When entering single points, the “X” coordinate designates the distance in degrees the point
will be located to the left or right of the center of the test field. For example, an entry of “15”
will place the point 15 degrees to the right of the center, while an entry of “-10” will place the
point 10 degrees to the left of the center.
The “Y” coordinate designates the distance in degrees the point will be located above or below
the center of the test field. For example, an entry of “6” will place the point 6 degrees above
the center, while “-12” will place the point 12 degrees below the center. The combination of
“X” and “Y” coordinates locates the point in the test pattern.
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