Fluke PM3082 Service Manual page 431

PERFORMANCE TEST
Test set up:
5500A
Settings/procedure:
1 - Press the CAL key for a few seconds to start the autocal procedure. This takes approximately
one minute. When ready, the oscilloscope is fine tuned to optimal accuracy.
2 - Apply a 50 Hz sine wave signal of 8 V(pp) to input CH1;
3 - Press the AUTOSET key and adjust the input signal to a trace- height of 8 div.
4 - Activate the GND function and verify that the straight line is exactly parallel to the horizontal
graticule lines. If not, readjust the TRACE ROTATION.
5 - Switch the GND function off and verify that a signal of 8 divisions is displayed.
6 - Press the TB MODE menu key to display the TB MODE menu.
7 - Select X-DEFL 'on' in this menu; the text 'on' must be intensified. The name of the displayed
menu now changes into : TB MODE X-DEFL.
8 - Select 'ch2' in the TB MODE X-DEFL menu.
9 - Use the X POS control to shift the vertical line to the center of the screen.
Requirements:
1 - Verify that the vertical line is parallel to the vertical graticule line in the center of the screen.
2 - Verify that the angle with respect to the horizontal graticule lines is 90° ± 0.5°x as indicated in
the figure.
< 0 .0 7 d iv
Figure 6.5 Orthogonality
OSCILLOSCOPE UNDER TEST
500 CABLE
OR
S 0 .0 7 d iv
MAT3913
6 - 5