Calibration
1502C MTDR Service Manual
6–21
10. Verify that the distance is less than or equal to 0.096 ft
D
.
O
F
F
O
N
ac
O
F
F
O
F
F
0.076 ft
n
Figure 6–35: Cursor on Rising Edge at Last Horizontal Graticule
NOTE. If the instrument fails this check, refer to Troubleshooting in the Maintenance
chapter and Driver/Sampler in the Circuit Descriptions chapter of this manual.
Jitter Check
NOTE. If you have just completed the previous check, the instrument might still be
in HORZ SET REF mode. This will not have any effect on the Jitter Check. If you
wish to exit HORZ SET REF, either turn the power off and on, re-initializing the
instrument, or follow the directions for HORZ SET REF in the Operator chapter.
1. Set the front-panel controls:
CABLE 50
W
terminator
NOISE FILTER 1 avg
VERT SCALE 500 m
r
DIST/DIV .1 ft/div
V
P
.99
2. Using the
n
o
POSITION and the
n
o
POSITION controls, center the rising edge
of the pulse on the center horizontal graticule line.
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