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The Klein Tools Ranger™ TDR is a portable time domain reflectometer
(TDR) and voice-data-video cable tester. It measures cable length,
calibrates Nominal Velocity of Propagation (NVP) values, finds faults in
cables, and provides built-in tone generation for cable tracing.
± (1% + 3 ft. / 1 m) length accuracy.
Stores up to two NVP values.
Displays length reading in feet or meters.
Extra large seven-segment, back-lit LCD screen.
Tests most types of copper cable including data, voice, video, lamp
wire, siamese, and NM cables.
Discovers NVP values for cables with known length.
Automatic pre-test voltage checks.
6.8" x 3.15" x 1.3" (17.3 x 8.0 x 3.3 cm)
12.0 oz. (340 grams) with batteries
32° to 122°F (0° to 50°C)
-4°F to 140°F (-20° to 60°C)
10% to 90%, non-condensing
10000 ft. (3050 m) maximum
At maximum of Safety Extra Low Voltage limits
Spread Spectrum Time Domain Reflectometry
Constant output amplitude of 3Vpp, 4 cadences
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Connect the F-connector coupler (barrel connector) to the input
The cable to be tested should be terminated with an F-connector
The opposite end of the cable to be tested should be le ft.
Attach the cable to be tested to the Ranger™ TDR by carefully
Connect the F-connector coupler (barrel connector) to the input
The cable to be tested should be terminated with a female RJ45
The opposite end of the cable to be tested should be le ft.
Attach the included F-connector-to-male-RJ45 plug adapter to the
Attach the RJ45 plug adapter end to the female RJ45 jack of the
Connect the F-connector coupler (barrel connector) by carefully
The cable to be tested should have a pair of exposed conductors
The opposite end of the cable to be tested should be le ft. open
Attach the included F-connector to alligator clips adapter to the
Securely attach the alligator clips to the exposed conductors of
Connect the BNC coupler (barrel connector) by carefully screwing
The opposite end of the cable to be tested should be le ft.
Attach the BNC connector of the cable to be tested to the female
Prepare a length of the same type of cable for which you need to
The Ranger™ TDR can calculate an NVP from a test cable length
Determine the physical length of the test cable length. Use the
Connect the test cable length to the Ranger™ TDR as described in
Select the unit of measurement (feet or meters) by pressing and
Enter the known cable length using the Calibration button and Up
Press the Test button. A ft.er a few seconds, the calculated NVP
Press and hold the Memory button to save the new NVP in the
If the calculated NVP is outside of the range 20 to 99.9, the LCD
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Use the Up and Down buttons to set the NVP value shown in the
Press the Memory button repeatedly to toggle between memory
Press and hold the Memory button. The up and down arrows
Recall a stored value by pressing the Memory button until the
Attach the cable to be tested as instructed in Preparing to Test
Note that the connection to the cable to be tested should be as
Determine the correct NVP value for the cable to be tested as
Change the unit of measurement if necessary by pressing and
The screen will display “Short” if the two conductors are directly
The screen will display “Open” if the two conductors are not
The screen will display “Error” and show dashes instead of the
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The screen will momentarily flash “LOOP”, then run a test every
Pressing any other button except the Power button exits
Attach the cable to be toned as instructed in Preparing to Test
Press the Up button or Down button to switch cadences (HI, LO,
Use a tone probe to trace the cable being toned.
See the tone probe's instruction manual for more information on
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6,8" × 3,15" × 1,3" (17,3cm × 8,0cm × 3,3 cm)
12,0oz (340g) con baterías
32°F a 122°F (0°C a 50°C)
-4°F a 140°F (-20°C a 60°C)
10% a 90%, sin condensación
10000pies (3050m) como máximo
en los límites máximos de voltaje extra bajo
Reflectometría de dominio temporal con
amplitud de salida constante de 3Vpp,
yvelocidad de propagación de onda, la NVP