52070956 12/14© 2014 Greenlee Textron Inc.
TS90 TelScout
®
Time-Domain Reflectometer
Quick Reference Guide
Distance/Open/Short
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the test leads to the cable under test.
5. Press TEST TYPE.
6. Use pq to select TEST PAIR.
7. Press EXIT.
8. Press MORE CABLE until the reflection is seen.
9. Use pq to adjust the waveform height.
10. Press tu to move the cursor to the leading edge of
the reflection.
Bridged Taps and Laterals
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the test leads to the cable under test.
5. Press TEST TYPE.
6. Use pq to select TEST PAIR.
7. Press EXIT.
8. Press MORE CABLE until the reflection is seen.
9. Use pq to adjust the waveform height.
10. Press tu to move the cursor to the leading edge of
the bridged tap.
Load Coils
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the test leads to the cable under test.
5. Press TEST TYPE.
6. Use pq to select TEST PAIR.
7. Press EXIT.
8. Press MORE CABLE until the reflection is seen.
9. Use pq to adjust the waveform height.
10. Press tu to move the cursor to the leading edge of
the load coil.
Typical Open
Typical Short
Single Bridged Tap
Multiple Bridge Taps
Note: If there is more than one bridged tap on the pair, the
additional lateral might be sufficient to obscure the end of
the cable. If necessary, remove the first bridged tap and
retest the cable to locate the next tap.
Typical Load Coil
Note: Load coil waveforms look very similar to an open
waveform. Typically, the load coil will be located at its
appropriate spacing, depending on the loading scheme
being used.
Water
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the test leads to the cable under test.
5. Press TEST TYPE.
6. Use pq to select TEST PAIR.
7. Press EXIT.
8. Press MORE CABLE until the reflection is seen.
9. Use pq to adjust the waveform height.
10. Press tu to move the cursor to the beginning of the
wet section (see A below). This is the distance to the
water.
11. Press tu to move the cursor to the end of the wet
section (see B below).
12. A to B is the wet section.
Split Pair
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the TEST leads to the first split pair.
5. Connect the REFERENCE leads to the second split pair.
6. Press TEST TYPE.
7. Use pq to select SPLITS OR CROSSTALK.
8. Press EXIT.
9. Press MORE CABLE until the reflection is seen.
10. Use pq to adjust the waveform height.
11. Press tu to move the cursor to the split.
Comparing Two Pairs
1. Press RESET TO METRIC or RESET TO US
(notnecessary if previously set).
2. Press SETUP.
3. Use pq to select the cable type to be tested.
4. Connect the TEST leads to the first pair.
5. Connect the REFERENCE leads to the second split pair.
6. Press TEST TYPE.
7. Use pq to select TEST PAIR/REFERENCE PAIR.
8. Press EXIT. Both the test pair waveforms and the
reference pair waveform are displayed (test pair
waveform I on top).
9. Press MORE CABLE until the reflection is seen.
10. Use pq to adjust the waveform height.
11. Press tu to move the cursor to the leading edge of
the event..
Typical Water Waveform
A B
Typical Split (Crosstalk Mode) Comparing Two Waveforms
Split End of
Cable
Note: The distance from the front panel to the water (A)
is correct. The wet section distance (A to B) is not correct
due to the Vp being changed by the water. Subtract the
dry section distance from the cable map to obtain the wet
distance, or measure from both ends of the cable to the
wet section.
TelScout is a registered trademark of
Textron Innovations Inc.