Fluke PM3082 Service Manual page 432

6 - 6
6.3.5 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)
Test set-up:
5500A
Settings/procedure:
1 - Apply a 50 Hz sine wave signal of 8 V(pp) to input CH1;
2 - Press the AUTOSET key and adjust the input signal to an amplitude of 8 divisions.
3 - Using the CH1 POS control, adjust the display around the center of the screen.
4 - Press the TB MODE menu key to display the TB MODE menu.
5 - Select X-DEFL 'on' in this menu; the text 'on' must be intensified. The name of the menu now
changes into TB MODE X-DEFL.
6 - Select 'ch2' in the TB MODE X-DEFL menu.
7 - Using the X POS control, shift the vertical line across the center 8 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.
OSCILLOSCOPE UNDER TEST
60S! CABLE
PERFORMANCE TEST