Handheld Tdr Cable Fault Finder Tester Locator Price

Name: 0-8km visual Cable Fault Locator Power Meter This Cable Fault Locator (hereafter referred as locator) can measure the exact fault location such as the broken line, cross faults, earthing, poor insulation and poor contact of the lead covered cables as well as plastic cables.The highlights for this locator are that it can test numbers of typical faults, features are as follow:Digital gain Adjustment control to make the gain adjustment very easy.Digital waveform automatically Identify technique to make sure no test dead zone.Top grade ARM single chip micro computer can make calculation and judge the fault waveform exactly.Large colorful LCD display; humanized operation interface; six function keys can do all the tests.High-energy Li battery, continuous work 10 hours (with special charger).  SPECIFICATIONS  Max range: 8 km (16km/32km are optional)Highest resolution: 1mDead Zone: 0 mPower consumption: 1WWeight(kg): 0.38kgDimension(mm): 204×100×36mm3Working temperature: -15ºC to + 45ºCStorage temperature: -20ºC~ + 55ºC  USB storage (optional): transmit wave form to U disk, and analyze the wave form on computer  WORKING PRINCIPLEPulse testing is a kind of remote testing method; one can locate the fault point without testing on the field or testing with end-to-end coordination. The principle of the theory is:The instrument emits a pulse to the line, when the line has faults, the pulse reflection will change. If the come and back time can be measured, the location of the fault point can be detected.Suppose the pulse transmission velocity in electric cable velocity is V, the come and back time that the pulse travels between the test point and the fault point is T, the fault distance is L, then:  2L = V T  L = V T/2For example, the sending end transmits a pulse to the cable, after 20μs, the sending end get the reflection pulse. If the pulse transmission velocity in the electric cable is 201m/μs, the fault distance L isL = 201×20/2 = 2010m  TESTING PROCEDURESDiagnosis of fault charactersTo insure the accuracy of the testing of fault point, the testing personnel shall diagnose the fault characters correctly and then choose the most suitable testing mode. The characters of telecom cable faults can be simply divided into the following several kinds:  Broken line  One or many cable core line are broken.  Crossed lineThe insulating resistance between the different couple of lines drops and causes the communication amplitude drops.  Earthing faultThe insulating resistance between the core line to the lead cover drops and causes low communication qualityCrosstalk noiseWhen the cable core insulation material is invaded by water or humidity, the insulating resistance will drop and cause low communication quality or even blocks.Bad insulationThe insulating resistance between different couple of lines and the core drops to a very low level, the communication quality comes under serious influences.Fault TestingCut off the cable to be tested both sides lines or equipment. Make sure the cable to be tested is free of voltage. Using this instrument to do intelligence testing first, if the fault cannot be detected and then you can change to manual testing.Locating fault pointThe tester will Judge the approximate location based on the testing result, then check the cable, cable gland, cross boxes, etc., depending on the actual situation.AUTO TESTPress, connect the testing lead line and fault cable line. Press  and then the instrument will show the testing result.Note: The default setting wave velocity is 200m/ μ s, when you perform intelligence testing, the user shall check whether need to adjust the velocity.MANUAL TESTThe relevant setting and parameters will demonstrate on the underneath of the display screen. Press  to adjust the setting and parameters.1) GainPress , until "Gain" shows reverse color display. Then press    orto adjust the amplitude (1~99 adjustable), Press  , the screen will display the waveafter gain adjustment.  2) RangeDuring manual testing, range decides the maximum testing distance of the instrument, so the range value shall be chose as longer than actual length of the cable tobe tested. To adjust the Range, press   , until Range shows reverse color display.Press or  to adjust the Range.3) VOPThe precision of the wave velocity, directly affect the precision of the testing result. So the wave velocity shall be calibrated according to the cable characters. Press ,until VOP shows reverse color display. Then, press  or  to adjust the wave velocity.Adjust the Range and VOP according to the characters and estimated length of the cable to be tested. Appropriately adjust the wave amplitude to make the waveforms on the display screen to be observed easily. Move the cursor to inflection of the reflected waveform. The fault distance will demonstrate on the underneath of the display screen.4) Waveform ComparisonPress  until it displays "Press "-" to memory, "+" to both". Now press "" tosave the current waveform; press