Fluke ScopeMeter 123, Service Manual, Page: 35 / 96

Performance Verification
3.5 Input A and Input B Tests
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3-5
visible or hardly visible.
Observe the display closely, and verify that no light pixels are shown.
Figure 3-1. Display Pixel Test Pattern
11. Press .
The test pattern is removed; the test tool shows
Contrast (CL 0110):MANUAL
12. Press (CAL) .
The test tool shows the display test pattern shown in Figure 3-1, at default contrast.
Observe the test pattern closely, and verify that the no pixels with abnormal contrast are
present in the display pattern squares. Also verify that the contrast of the upper left and
upper right square of the test pattern are equal.
13. Press .
The test pattern is removed; the test tool shows
Contrast (CL 0120):MANUAL
14. Press (CAL) .
The test tool shows a light display; the test pattern as shown in Figure 3-1 may not be
visible or hardly visible.
Observe the display closely, and verify that no dark pixels are shown.
15. Turn the test tool OFF and ON to exit the calibration menu and to return to the normal
operating mode.
3.5 Input A and Input B Tests
During verification you must open menus, and to choose items from the menu.
Proceed as follows to make choices in a menu (see Figure 3.2):
•
Open the menu, for example press (new) or (old) .
•
Press to highlight the item to be selected in a menu.
•
Press to confirm the selection and to jump to the next item group (if present). Item
groups in a menu are separated by a vertical line.
•
After pressing in the last menu item group, the menu is closed.