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MAN_Easyflex_com_eng_01.doc

6.3

Table: NVP and

for Common Types of Cables

Typical propagation time

Insulation

m/µs

, ft/µs

NVP

Oil-
impregnated
paper

75-84

246-276

0.50-

0.56

Poly, cross-
linked

78-87

256-285

0.52-

0.58

Poly, filled with
Petrolat

96.0

314.8

0.64

Polyethylene

100.5

329.6

0.67

PTFE

106.5

349.3

0.71

Paper

108-132 354-433

0.72-

0.88

Poly, foamed

122.9

403.4

0.82

Air

141-147 462-482

0.94-

0.98

Содержание Easyflex Com

Страница 1: ...kationsnetze Communication Networks Elektrizit tsnetze Power Networks Rohrleitungsnetze Water Networks Leitungsortung Line Location Date of release 2003 34 Mess und Ortungstechnik Measuring and Locati...

Страница 2: ...2 MAN_Easyflex_com_eng_01 doc...

Страница 3: ...MAN_Easyflex_com_eng_01 doc 3 Easyflex Com compact and light weight Time Domain Reflectometer...

Страница 4: ...4 MAN_Easyflex_com_eng_01 doc...

Страница 5: ...tion 28 3 8 How to Locate a Fault 29 3 8 1 Fields of Application 30 3 8 1 1 Faults Causing a Negative Reflection 30 3 8 1 2 Faults Causing a Positive Reflection 31 3 8 1 3 Further Fields of Applicatio...

Страница 6: ...46 4 2 Operation 47 4 2 1 Safety Precautions 47 4 2 2 Modes of Operation 47 4 2 3 Practical Hints 48 4 3 Troubleshooting 49 5 CARE UND MAINTENANCE 49 6 APPENDIX 50 6 1 List of Abbreviations Used 50 6...

Страница 7: ...ification test performed by the department of Quality Assurance of Hagenuk KMT Kabelmesstechnik GmbH Conformance with the directive on Electromagnetic Compatibility was verified in accordance with the...

Страница 8: ...8 MAN_Easyflex_com_eng_01 doc...

Страница 9: ...471 Radeburg Dresden D 96148 Baunach TELEFON 49 35208 84 0 TELEFON 49 9544 68 0 TELEFAX 49 35208 84 249 TELEFAX 49 9544 22 73 SERVICE HOTLINE TELEFON 49 35208 84 211 TELEFON 49 9544 68 0 TELEFAX 49 35...

Страница 10: ...uk KMT Warranty claims on Hagenuk KMT lapse 12 months after the delivery date Parts supplied by Hagenuk KMT within the framework of the warranty are also covered by this warranty for the remaining war...

Страница 11: ...staff Other persons must be kept away This manual must be available for the supervisory operating and maintenance staff to refer to Improper use may endanger life and limb the Easyflex Com and connect...

Страница 12: ...dead and then only by a skilled electrician in accordance with current accident prevention regulations A skilled electrician in the sense of the accident prevention regulations is a person who can ass...

Страница 13: ...the connected test object In every place where the electric characteristics of the cable have changed part of the transmission pulse is reflected and caused to travel back to the Easyflex Com where i...

Страница 14: ...pairs Location of crosstalk NEXT Pair versus Pair k1 measurement There are two display modes the user can choose between When you wish to get a revealing overview of the cable under test and at the s...

Страница 15: ...out alternately on cables connected to sockets L1 L2 Diff Measurement of difference between cables connected to sockets L1 and L2 NEXT Location of crosstalk between cables connected to sockets L1 and...

Страница 16: ...e 4000 m 2 5 m for range 7500 m 5 m for range 15 km Accuracy 0 1 of range of measurement 1 cursor step Gain 0 80 dB in steps of 1 dB Dynamic range 90 dB Distance reading m ft or s Setting range of sig...

Страница 17: ...h of test inputs 250 V AC DC 50 60 Hz CAT II overvoltage category Memory locations 16 Measuring rate up to 11 reflectograms per second averaging mode short range Display rate up to 4 screen images per...

Страница 18: ...orage temperature accumulator 20 C 50 C Dimensions mm 176 x 260 x 70 L x W x H 186 x 260 x 70 incl measuring terminals Weight approx 1 5 kg Interelement protection class II with accumulator compartmen...

Страница 19: ...of Easyflex Com G E two languages on request 2 pcs set of test leads Case for Easyflex Com Accumulator 7 2 V 1 7 Ah NiMH Charge case Plug in mains unit for charger case according to country EURO 230...

Страница 20: ...the on site preparation of test reports Transportation case for printer set Plug in mains unit external source of power Adapter cable for charging the accumulator from a vehicle electric mains using...

Страница 21: ...a reference for comparison with the test object connected to L1 In mode Diff this facilitates the detection of small fault reflections in the tested line connected to L1 because each reflection cause...

Страница 22: ...the reflectograms Press Display when you want to work with two images of the trace see Fig 3 The upper is the reflectogram of the full range of measurement There is a black bar below this overview ind...

Страница 23: ...r operation Replace the accumulator or charge it in order to restore readiness for operation Switch the instrument off before replacing the accumulator to retain all data Press one of the following ke...

Страница 24: ...y the Easyflex Com will display informations on one of the following topics key select with rotary encoder press key Mark key for return Information on help Fault location Operation Compensation Avera...

Страница 25: ...Zoom Propagation velocity NVP Single or Dual Display Menu Menu Units Menu Interface Menu Printer Menu System Menu Power supply Help Cursor Range Measuring Range Gain dB Compensation Modes Single Cont...

Страница 26: ...d Menu Printer Printer Layout HP Deskjet Epson compatib Epson 9 pin Kodak Diconix Normal Special Menu System Self test Date time Language Software version Serial number mm dd yy hh mm ss AM PM German...

Страница 27: ...r s logo will be shown for about 2 seconds After run up has been completed the Easyflex Com can be switched off any time by pressing key When being switched off the device saves all device settings so...

Страница 28: ...o as to be able to detect and locate a fault at close range i e at a distance of up to 10 meters When a faultless pair of conductors of the same type of cable as the faulty one is available and when i...

Страница 29: ...ent and do not remove the cap of the serial interface 3 The Easyflex Com is able to measure the length of the cable and the distance to a point of fault It is not able however to find out the route of...

Страница 30: ...egative reflection see Fig 4 Fig 4 Type of Fault Causing a Negative Reflection 2 Short circuit to shield One conductor in a cable is in contact with the metal shield of the cable For locating this typ...

Страница 31: ...me detached To locate such faults and to suppress noise signals on the display connect the test leads to the shield and to as many conductors of the cable as possible This type of fault generates a fa...

Страница 32: ...roken line Moisture in a cable filled with petrolatum may possibly result in very small fault reflections as the volume of moisture is only limited 3 8 1 3 Further Fields of Application 1 T joints Tap...

Страница 33: ...e 2 3 Press key to switch the Easyflex Com on Menu Measurement will appear after a few seconds 4 Press key Line to select the appropriate mode of measurement e g Diff when a good pair is available or...

Страница 34: ...ch that the reflection is located above the bar Then use the rotary encoder to move the cursor in the lower part of the screen to the place where the foot point of the fault is located see Fig 6 10 Th...

Страница 35: ...able junctions and other connections resulting in a trace which is normally similar to that shown in Fig 7 good pair In Fig 8 Faulty pair in addition to the fault other cable reflections are visible w...

Страница 36: ...to solve this problem the Easyflex Com is equipped with an averaging mode Press function key Mode and use the rotary encoder to enable mode Averaging The display will display the number of measuremen...

Страница 37: ...ance the device can determine the beginning and the end of a split pairs section in a longer trunk line which is composed of a number of sections The point of crosstalk coupling is located as in any n...

Страница 38: ...en a cable is composed of sections with differing NVP v 2 values for measurements in relation to a known point of reference this will increase measuring accuracy and for determining the NVP v 2 value...

Страница 39: ...00 ns 4 km 200 ns 200 750 3000 ns 7 5 km 750 ns 750 3000 ns 15 km 750 ns 750 3000 ns The offered combinations of pulse width and display range take into account that not every pulse width is suitable...

Страница 40: ...ice to have the Lithium accumulator replaced Error code 2 asks for setting the clock 2nd Menu Menu System Mark go with rotary encoder to Date Time Mark select unit of time with rotary encoder Mark sel...

Страница 41: ...y change of the v 2 setting will also change this value in the reflectogram When a trace is loaded v 2 is re set to its stored value In mode ALT two adjacent memory locations are made available for st...

Страница 42: ...in front of Cursor Use key combination 2nd Recall for a quick download of a trace from memory location 1 The traces stored in memory can later be used for processing or for printing out a hardcopy It...

Страница 43: ...extra is installed on the PC Winkis Com can also be used for re loading a reflectogram including its set up Furthermore Winkis Com gives you access to all reflectograms stored Please refer to the sof...

Страница 44: ...tput voltage 12 V DC Interelement protection class II Operating temperature range 0 40 C Storage temperature range 40 70 C Charger Input voltage 12 0 V DC Maximum input current 580 mA Interelement pro...

Страница 45: ...arger circuit see enlarged details The amber indicator lamp shall light up continuously after the accumulator has been inserted If it does not shortly disconnect the charger from the mains After charg...

Страница 46: ...er Case 4 1 3 General Instructions on How to Handle a NiMH Accumulator ATTENTION Do not short circuit a accumulator Do not dismanntle or modify a accumulator Do not dispose of in fire Protect batterie...

Страница 47: ...ose vicinity of storage media Only use the plug in mains unit supplied 4 2 2 Modes of Operation OPERATION The green LED is alight Indicates that the charger is ready for use STATUS Waiting mode The am...

Страница 48: ...has been completed the device will change over to trickle charging to compensate for natural self discharge The optimum way of operation is to have two accumulators with one remaining in the charger...

Страница 49: ...solve the problem please submit the device to your service station for inspection or contact the Hagenuk KMT hotline 5 CARE UND MAINTENANCE Neither the Easyflex Com nor any of its accessories contain...

Страница 50: ...agnetic compatibility IEC International Electrotechnical Committee LCD Liquid crystal display LED Light emitting diode NEXT Near end cross X talk NiMH Nickel metal hydrid NVP Nominal velocity of propa...

Страница 51: ...MAN_Easyflex_com_eng_01 doc 51 6 2 Conversion NVP v 2 Conversion NVP v 2 m s 2 s m 299 79 NVP 2 v Conversion v 2 m s NVP s m 299 79 2 v 2 NVP...

Страница 52: ...Insulation v 2 m s v 2 ft s NVP Oil impregnated paper 75 84 246 276 0 50 0 56 Poly cross linked 78 87 256 285 0 52 0 58 Poly filled with Petrolat 96 0 314 8 0 64 Polyethylene 100 5 329 6 0 67 PTFE 106...

Страница 53: ...MAN_Easyflex_com_eng_01 doc 53 From your own measurements Propagation time Insulation or type of cable v 2 m s v 2 ft s NVP...

Страница 54: ...ansmitter signals A pulse is an electrical signal with high amplitude and short duration When travelling along the cable each pulse is more and more deformed attenuation of amplitude increase in signa...

Страница 55: ...faktor in German is a way to describe the propagation velocity of a signal along a line It specifies the ratio of signal propagation velocity to the velocity of light If for instance the NVP of a cabl...

Страница 56: ...ich is enclosed in a common shield Balanced Line Two wire line with the voltages of either conductor versus earth being equal in size but opposite in polarity Usually two wire line are twisted twisted...

Страница 57: ...e this is a usual way of taking twice the signal travel path into account To depict a reflection on the screen the signal has to travel from the meter to the fault and back If the v 2 values of variou...

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