Operator Tutorial
2–20
1503C MTDR User Manual
17. Press STORE. The display will clear, awaiting STORE to be pressed again,
which would activate another Max Hold monitor cycle.
You can probably see how this function is useful for monitoring lines for changes
over a period of time, or for intermittent conditions. For example:
H
A coastal phone line only has problems during high tide. Overnight monitoring
reveals water in the line during the high tide period.
H
A data communications line is monitored for an intermittent short. Three days
of monitoring reveals the shorts occur only during the hours of darkness.
Rodents are found in the cable ducts.
H
A cable becomes defective only during daytime hours. Monitoring reveals the
line length increases (sags) during the heat of the day, shorting out on a tree limb.
During the night, the cable cools, tightens, and is no longer shorted on the tree
limb.
18. To exit Max Hold, access the Acquisition Control Menu again, turn off Max
Hold, and push MENU repeatedly until the instrument returns to normal
operation.
1. Set the 1503C front-panel controls to:
CABLE
Attach 10-ft cable
IMPEDANCE
93
NOISE FILTER
1 avg
VERT SCALE
0.00 dB (default)
DIST/DIV
1 ft/div (0.25 m)
Vp
.84
PULSE WIDTH
2 ns
2. Pull POWER on.
3. Press MENU to access the Main Menu.
4. Using the
n
o
POSITION control, scroll down to Setup Menu.
5. Press MENU to accept this selection.
6. Scroll down to Acquisition Control Menu.
7. Press MENU to accept this selection.
8. Scroll down to Pulse is: On.
9. Press MENU to toggle this selection. It should now read Pulse is: Off.
10. Press MENU repeatedly until the instrument returns to normal operation.
Pulse On / Off
Summary of Contents for 1503C
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Page 92: ...Appendix A Specifications A 6 1503C MTDR User Manual...
Page 104: ...Appendis B Operator Performance Checks B 12 1503C MTDR User Manual...
Page 122: ...Glossary Glossary 6 1503C MTDR User Manual...
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