Trace Distortion - Fluke Autoranging CombiScope PM3370B Reference Manual

4 - 8
Requirements:
1 - Verify that the vertical line is parallel to the vertical graticule line in the
center of the screen.
Verify that the angle with respect to the horizontal graticule lines is 90° ± 0.5°
2 -
as indicated in the figure.
≤ 0.07div
Figure 4.1 Orthogonality
4.3.5

Trace distortion

This test checks the distortion of a horizontal line in the central 6 x 8 divisions of
the screen.
Test equipment:
None
Settings/procedure:
1 - Press the AUTOSET key with no input signal applied to the scope.
2 - Use the CH1 POS control to shift the timebase line vertically across the
center 6 divisions of the screen.
Requirements:
- Verify that the deviation from the ideal straight line does not exceed 0.03
divisions in the center of screen and 0.1 divisions elsewhere.
Test equipment:
Fluke 5500A mode: wavegen, wave sine (Alternative: function generator PM5136).
OR
PERFORMANCE TEST
≤ 0.07div
MAT3913