19
LOOP MODE
Measuring hookup:
Measuring section:
The loop is measured between only
А
&
В
wires. The measurement result is counted in the
cable length if you have selected a cable type.
Страница 1: ...1 Insrtruction Manual SVPRIBOR IRK PRO gamma Tver Russia ...
Страница 2: ...resistance loop ohmic disbalance electrical capacity of all cable types Color TFT display 800x480 Multifunctional menu PC communication through USB or IRDA EXPLOITATION CONDITION Operational Temperature from 20 to 50ºC Relative humidity to 90 at 30ºC Atmospheric pressure from 86 to 106 kPa CERTIFICATES The state register 17719 07 the certificate on the statement of measurement device type RU C 34 ...
Страница 3: ...0 3000 Ohm 0 1 1 LSU 3 kOhm 10 kOhm 0 1 kOhm Maximal error of ohmic disbalance measuring 0 1 1 LSU Maximal error of insulation resistance measuring In the range 0 999 kOhm In the range 1МОм 999 MOhm In the range 1000МОм 4999 MOhm In the range 5000МОм 10000 MOhm In the range 10000 MOhm 2 1 LSU 2 1 LSU 5 1 LSU 10 1 LSU TBD Maximal error of electrical capacity measuring 2 1 LSU LSU displayed Least Si...
Страница 4: ... feed Z0 Potentiometer of a match installation Rx Tx Input Output Measuring pulse generator output and TDR input in a combined mode A B C Sockets for Bridge measuring wires of IRK PRO IrDA Window to maintenance of infrared PC communication Tx Measuring pulse generator output in a separated operating mode USB for PC communication ...
Страница 5: ...nt panel To turn off the device press again POWERED OF THE DEVICE Powered of the device is fulfill by 6 accumulators type C NiMh automotive power or by adaptor from AC network During the powered by adaptor the accumulator is charges quickly You can charge the accumulator then the device is turned on or off In any case the time of total accumulators charging doe not exceed 3 hours The controlling o...
Страница 6: ... MENU To view a Main Menu turn ON the device or press the key in the working mode To run the menu item press the ОК key TDR DSP TDR and Bridge measurements are the measurement functionalities described bellow ...
Страница 7: ...On enough long or much faulted cables the reflected signal can be very loosed In the device there is the opportunity of preliminary echo gaining The device connected to a cable is heterogeneity too To eliminate a parasitic echo signal use the controlled load MATCH Rotating a potentiometer MATCH it is possible to achieve a significant loss of repeated reflections Necessity of the match is most actu...
Страница 8: ...new algorithm of muting During the intense noises it is recommended to turn on the muting mode To rise of the trace stability is applied the averaging mode Growth of averaging number is cause e stability rising and reducing of the display refreshing speed TURNING ON THE TDR Preliminary choose a cable in Main Menu The device will adjust on the selected cable gauges If you does not choose a cable th...
Страница 9: ... the cable and work with default cable it is necessary to establish VF or CC and a range of a cable viewing The distance between cursors will be calculated according to VF in selected view range If the VF is unknown the device will establish it on a Cable Type For this purpose select e necessary mark in Main Men Cable selection Cable Type MEASUREMENT OF THE DISTANCE Measurement of the distance mus...
Страница 10: ...there are 3 discrepancies 1 Positioning of the measuring cursor In classical TDR the cursors are always starts of the pulse beginning that is very difficult on a long or problem cables In DSP TDR the displayed the result of mathematical treatment and the cursors are always starts of the signal extreme vertex maximal or minimal value This method is rather accurate 2 VF or CC VF or CC in DSP TDR is ...
Страница 11: ...hole cable The AVERAGING key is used to eliminate the occasional noises and to rice picture stability during the averaging increasing The keys on the left vertical part of the menu are changing the TDR working mode trace recording trace memory activation of the logged trace for the comparison memory work in separate or combined mode adjusted pulse amplitude the mode of averaging for a line with in...
Страница 12: ...ic scale more usual there are realized an additional viewing mode log Logarithmic scale Logarithm These logarithmic scale is taken into account a signal character or the positive signal levels are displayed in the top part of the screen the negative signal levels are displayed in the bottom part of the screen from the top part 0 dB of the positive signal 60 dB 60 dB 0 dB of negative signal You can...
Страница 13: ...use the measuring scheme of asymmetry attenuation LBal You can detect a balance failure and noise security failure Disbalance of the cable pair is lead to the loss of noise security What fact can cause a symmetry breaking of the cable pair The protection elements and defective cross connections defective splices and splitter insulation defects split location Defective connections can cause an ohmi...
Страница 14: ...p For the cable of 4th category from 0 1 Ohm Leakage The insulation fault can cause the cable pair misbalancing if there is damaged the one wire in the cable pair the leakage on the shield or on the wire of another pair The expected limit of leakage definition is increasing for the cable of Category 3 from the value 110 Ohm up to 11 kOhm of Category 4 from 40kOhm up to 50 kOhm Example We are use t...
Страница 15: ... cable pair symmetry In much the same way the measuring pulse is attenuated and causes a difficult identification To positioning of the first cursor on the measuring pulse switch the device in to combined mode The reflection polarity is defined from TDR connecting and cable pair asymmetry character or Splice with ohmic asymmetry During the amplification of 39 dB on the cable of 600m were obtained ...
Страница 16: ...select the switching section mode on the left part of the screen press the F1 F6 keys 3 the measurements section The given measurements are displayed in the measurements section according to whole 3 cable connecting АС ВС and АВ You can see the measurement result of selected cable connection in the big window To switch the cable connections press the keys 4 the Menu bottom line is control the meas...
Страница 17: ...efects searching 180 V for work without turning off the equipment Averaging quantity of filters averaging during the unstable indications it is recommended to increase the averaging quantity For rapid measurements you should to decrease the averaging quantity Filter auto regular restart of the filter manual start by the ОК key Before turning on the manual filter it is necessary the cables complete...
Страница 18: ...18 CAPACITY MODE Measuring hookup Measuring section ...
Страница 19: ...19 LOOP MODE Measuring hookup Measuring section The loop is measured between only А В wires The measurement result is counted in the cable length if you have selected a cable type ...
Страница 20: ...o any back wires Connect the А and В wires to the test wires and the С wire connect to the shield Turn on the filter in the LOOP After the creeping line working the device will remember a loop resistance In the LEAKAGE mode press the asymmetry key The result will be recorded Measuring hookup Measuring section ...
Страница 21: ...stance from 0 to 20 MOhm High metrological characteristics of ours BRIDGE cause impression what it is enough to connect the device to a line and you will always receive the accurate distance to cable fault in the result However it is necessary to remember what even the ideal device is necessary to use correctly else there can be mistakes because of incorrect work not because of device error What k...
Страница 22: ...o change the entered temperature on 3 5 С and you will see how the result will change You should remember that when you use function of length calculation on Cable Type and temperature you obviously receive approximate result The accurate result can be received if you enter the accurate cable length It is not possible to pick up the good wire If all wires are faulted then the good wire will be fau...
Страница 23: ...default at turning on of the device Therefore it is possible to make a measurement immediately The result shows in of length Only for a cable without sections Distance in meters Input of the cable length without sections To receive result in meters it is necessary to enter a known cable length into Cable 100 Only for a cable without sections How to calculate a cable length on Cable Type and temper...
Страница 24: ...urements described in protocol To find a fault you should fill a protocol 1 Back wire searching Connect a С wire to cable shield During open circuit find a wire with low insulation by the B wire Insulation resistance is controlled in B C line After select a good wire by A wire The insulation resistance is controlled in A C line ...
Страница 25: ...or must be not more than 0 005 3 Turn on the LOOP mode connect a loop at the far end between good and bad wires Control the connection quality at the far end according the device indication After connection completing start a filter loop measurement pressing the ОK key The filter is necessary ...
Страница 26: ...ng by the OK key The device will display the distance to the insulation fault location 5 The result is calculated according to K factor will be shown in a corresponding row If there is impossible to select a good wire select a wire with the lowest K factor ...
Страница 27: ...will be if wires A and B are mixed and the bad wire is connected to A On the screen you will see and near to distance X Under the scheme it is required that the cable core B is faulted Хв If it is shown Ха it does not influence the result but we recommend changing places of a wireAand B else the measurement is made not only through a faulty cable core and initially through a good cable core that c...
Страница 28: ...le Only for a cable without sections The searching consists of 3 stages described in protocol To find a fault you should to fill protocol 1 To find a good wire you should to measure a wire capacity 2 Fault searching Connect the open wire and good wire to the wires A and B The wires C connect to the cable shield Measure the wires capacity Select a good wire with great capacity and press SAVE GOOD 3...
Страница 29: ...29 ...
Страница 30: ...ou will work After return to the Menu and launch the SCHEDULED MEASUREMENT application ATTENTION If you for the first time make a scheduled measurement of the cable with high quantity of the cable pairs then the device request a time to create an empty table Don t hurry and wait for job completing and the cursor will be positioning on the zero cable pair If you see a partially filled table there a...
Страница 31: ...t results on to PC memory If there is no scheduled measurement of selected cable you will see an empty table SETUP OF THE MEASUREMENT GAUGES There are 4 types of commutations defined by AC BC AB 1 R C to measure an insulation resistance and capacity 2 R to measure only insulation resistance 3 C to measure only capacity 4 without measurements ...
Страница 32: ...y 2 Rloop Ra measurement of loop resistance and ohmic asymmetry The PAIR key allows establishing a pair from which it is recommended to start begin a measurement You can select a pair by pressing the keys WORKING RESULTS It is possible to transfer the scheduled measurements results to PC memory For this purpose press CREATE REPORT key and use the PC CONNECTION application select the communication ...
Страница 33: ...ents the device will select the Default Cable You can edit a range and VF or CC in the TDR s menu Cable 100 this cable is used for the bridge measurements At turning on the bridge measurements the device will select by default the Cable 100 The Cable Type contains the list of cables types with the following reference values VF or CC loop resistance capacitance per km You can edit the reference val...
Страница 34: ...34 SETTINGS You can change some parameters Date setting Auto power down and sound ...
Страница 35: ...s Definition of blocked loss at TDR measurements yes yes CALIBRATING MEANS The list of means necessary for calibration carrying out Monitor name Type Note Resistance box range 0 001 Ohm 100 Ohm with accuracy 0 001 Ohm Resistance box Р40103 ТУ 25 7762 003 86 accuracy rating 0 1 range 1 MOhm 10 GOhm Capacitance box Р5025 Accuracy range 0 1 range 100 pF 100 mkF Oscilloscope С1 104 Frequency meter Ч3 ...
Страница 36: ...e resistance box For insulation resistance more than 1000 MOhm you should to waiting for stable indications After each set up you should make a measurement of insulation resistance pressing the OK key and to fix the indications You must to make not than 3 measurements for each value on the resistance box The absolute error of measurement Δl is defined from equation Δl Amsd A0 Where Amsd the averag...
Страница 37: ... box you must make not less than 3 measurements To repeat press OK The absolute error of measurement Δ3 is defined from equation Δ3 Xmsd X0 where Xmsd the average of indications X0 the value from the table The accepted error Δ3 must be not more than tolerated error on the table Definition of an absolute error of a cable capacity measurement Switch the devise in to CAPACITY mode Changing of B C Con...
Страница 38: ...ng to figure Switch TDR in separate inputs mode Select the default cable from the List with the VF is 0 667 CC 1 499 Input the range 16742m gaining 0 dB Set up on the pulse generator the mode of external turning on the pulse width 10ms shift 50ms Control the pulse width by the frequency meter which operates in the mode of width pulse measurement with resolution not worse than 0 01ms Put the zero a...
Страница 39: ...amplitude on the generator obtain the maximal pulse amplitude indicated on the TDR screen Change the hookup according to the figure having entered the loss 80 db without turning off the device Set up on the TDR the gaining 60 dB Turn on the Averaging 128 At ending of the averaging estimate the noise level The result is good if the pulse amplitude more than the noise signal not less than in 1 4 tim...
Страница 40: ...x 100 SVPRIBOR phone 7 0822 41 29 91 fax 7 0822 41 29 91 www svpribor ru Technical support service support svpribor ru At sending in repair please accompany the device with the following data 1 Fault description 2 Your notes and desires about the device 3 Your address Send the device to repair to the address of 170043 Tver box 43100 ACCEPTANCE SERTIFICATE Serial number _________ Date _________ Sig...
Страница 41: ...03 500 MOhm 489 511 1 GOhm 949 MOhm 1 06 GOhm 5 GOhm 4 49 5 51 10 GOhm 8 99 11 1 Loop resistance measuring 0 Ohm 0 1 Ohm 0 0 2 0 5 Ohm 0 4 0 6 1 0 Ohm 0 9 1 1 10 0 Ohm 9 9 10 1 50 0 Ohm 49 9 50 1 100 0 Ohm 99 8 100 2 500 0 Ohm 499 4 500 6 1000 0 Ohm 998 9 1001 2000 Ohm 1997 2003 5 kOhm 4 9 5 1 9 kOhm 8 9 9 1 Electrical capacity measuring 0 nF 0 0 1 1 nF 0 8 1 2 10 nF 9 7 10 3 100 nF 97 103 200 nF ...
Страница 42: ...ns actually 100 0 0 0 2 50 50 99 8 100 500 0 0 0 2 250 250 99 8 100 Signature Date TDR Value Data Under specifications Actually Defining of monitoring pulse amplitude 10V Defining of the distance measuring error 10 mks 9 97 10 03 mks Defining of overlapping attenuation 80 dB 80 dB Signature Date ...
