Scope Input A, B, C, D Tests; Input A, B, C, D Vertical Accuracy Test - Fluke ScopeMeter 190 II Series Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual
10. Press
The test pattern is removed and the Test Tool shows
11. Press
12. Press
The Test Tool shows a light display. The test pattern shown in Figure 4-2
may not be visible or hardly visible.
Observe the display closely and verify that the display shows no
abnormalities.
13. Turn off and turn on the Test Tool to exit the calibration menu and return to
the normal operating mode.
If the maximum, minimum, or default display contrast is not OK, then you can
adjust these items without performing a complete calibration adjustment; refer to
Section 5 for detailed information.

Scope Input A, B, C, D Tests

Input A, B, C, D Vertical Accuracy Test

To prevent possible electrical shock, fire, or personal injury,
ensure that the calibrator is in standby mode before making any
connection between the calibrator and the Test Tool.
Dangerous voltages are present on the calibration source and
connection cables during these steps.
The test steps for channels C and D are only for the models
190-104, 190-204, or 190-504.
Proceed as follows:
1. Connect the Test Tool to the 5502A as shown in Figure 4-3. The vertical
channels A, B, C, and D are checked in succession so that there is one
waveform on the display at a time to facilitate amplitude adjustment.
4-8
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F2
.
F2
again to do the next step
F3
( .
CALIBRATE)
 Warning
Note
Contrast (CL 0110):
Contrast (CL 0120):