ACT6000 Advanced Communication Tester

Transcription

1 Research, Development and Production of Telecommunications Measuring Instruments Presents

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3 ACT6000 Advanced Communication Tester.what is it? Level Generator Selective Level Meter Spectrum & Network Analyzer TDR Faults Locator Digital Multimeter White Noise Generator Applications for TLC services.what is it useful for? Tests and Analysis on lines or any other communication way Attenuation & Frequency response Noise, Level, Distortion & Cross-talk Return-loss & Longitudinal Balance Faults location & Micro-Interruptions Noise immunity & Data-rate estimation Air Traffic - Voice and data comms. Highway data communications Railway data communications Energy transport data communications (PLC)

4 Summary - Applications - Internal Circuits and Functions - Menu Hierarchy - Connections and Commands - DELT Automatic Line/Channel Certification - SELT Automatic Line Qualification - SELT pre-configured transmissive tests - Electrics Tests - Events Tests - Transmissive Tests - Special Utilities ACT6000 (starting from 2012) The ALT2000 evolution ALT2000 (2001 to 2011) - High Resolution Color Display - Increasing of battery operation time - New battery charger circuit - USB ports to Pen-Drive and PC connection - SELT Sequence without external device and PC - Resistive Bridge to Resistance Faults Location - Operative Band Extension up 6 MHz (base) and up 35 MHz (optional)

5 ACT6000 Advanced Communication Tester Applications: - Qualification and troubleshooting of symmetric copper pairs - Spectral analysis of base and high band signals (up to 6 or 35 MHz) - xdsl preconfigured tests (Bit-Rate estimation and PSD included) Transmissive Qualification & Diagnosis Metallic Qualification Faults Finding & Faults Location Telephone Signalling Tests and Special Functions - Noise - AC and DC Voltage - Telephone Simulation - Return-Loss - AC and DC Capacitance - Power Spectrum Density - Long. Balancement - Insulation and Loop Resistance - Noise Immunity - Cross-Talk - Low Insulation Location - Results and Schreenshot export - Attenuation - TDR Faults location - xdsl S/N ratio evaluation - Microinterruptions test - xdsl Bit-Rate evaluation - Impulsive Noise test

6 ACT6000 Advanced Communication Tester Base Circuits & Measurements - Attenuation - Cross-Talk - Microinterruptions - Noise - Power Spectrum Density - Impulsive Noise Level Generator Active Bridge Selective Level Meter Spectrum Analyzer Digital Multimeter Resistive Bridge - Return-Loss - Long. Balance-Loss - TDR Fault Location - AC/DC Voltage - AC/DC Capacitance - Loop Resistance - Res. Insulation Resistive Faults Location

7 ACT6000 Level Generator & Selective Level Meter 200 Hz 6 MHz (or 35 MHz) operative band Advanced Communication Tester Main Functions Spectrum & Network Analyzer 200 Hz 6 MHz (or 35 MHz) operative band TDR Fault Locator & Events test from 2 to 8,000 meters Digital Multimeter Resistance Faults Locator & Special Functions

8 ACT Functions Group Menu Hierarchy Main Menu From this menu, by selecting the icon-number with the arrows and confirming with Enter it is possible to access the available functions. Quick access is possible by typing on the keypad the icon number. 1- Line Tests Access the sub-menu for automatic and pre-configured copper pairs qualification in SELT or DELT mode and POTS services. 2 - TDR Fault locator Access the TDR sub -menu to find the End-of -Line and possible faults on copper pairs. 5 Signal Analyzer Access the sub - menu for signal generation, selective measurements, spectral or network analysis on copper pairs or other lines or devices. 6 File Manager Access the sub - menu for management and export of saved file-measurements. 3 Event tests Access the sub - menu to monitor some events as microinterruptionsor impulsive noise on copper pairs and other lines types. 7 Config. & Utility Access the sub-menu for the initial setup of the instrument (date/hour, display.. and measurement parameters). 4 Multimeter Access the sub-menu for metallic measurements as voltage, resistance, insulation, capacitance of copper pairs and other devices 8 Slave mode Special configuration to set the instrument as Slave to perform some automatic and pre-configured End-to - End tests on copper pairs and lines.

9 ACT Connections and Commands description The front panel is free from connections to make the usage of the lateral keypad and the bottom function keys easy. All the data and graphs are shown on the color and high resolution display. The powerful human interface allows the quick menu selection to the intuitive use of the instrument. Connections Headset RTX Connector TX Connector Connector (Main Line) (Secondary Line) PC Connection USB port USB port LED Battery Power Supply (Service only) to PC to Pen-Drive status input

10 Copper Pairs / Channel Qualification: DELT Automatic Sequence Introduction MASTER SLAVE data communications from Base Band to xdsl band MASTER SLAVE PCM MUX digital stream PCM MUX voice / data communications in Base Band via digital stream By the use of a couple of ACT6000, each implemented by the advanced optional software ASW-1/II, it is allowed the automatic End-to-End test to perform an accurate and bilateral transmissive Test Sequence to produce the Line / Channel Qualification / Certification.

11 ESPORTAZIONE MISURE SU PC Funzioni Line / Cannel Speciali Certification: : Configuration for DELTesting Automatic Sequence End-to-End Start MASTER configuration (to put on the MDF Central Office or street cabinet ). Connect the line and the ground reference to the RTX connector. From the Main Menu select the item 1 Line Tests, and from this the 1. BALANCED LINE TESTS menu. By the F2 key select DELT mode and by the F3 key select the service type for the line to be test (i.e. MODEM 56k), then push F5 key to start the automatic procedure. From this moment the MASTER sends on the line under test an audible intermittent beep (useful as pair finder). SLAVE configuration (to put on the street cabinet or user side). Connect the line and the ground reference to the RTX connector. From the Main Menu select the item 8 Slave Mode and from this the 1. BALANCED LINE TESTS From this moment, if the line good (no interrupted or shorted), it is audible the beep sent from the MASTER. Push the F5 key to start the automatic sequence.

12 ESPORTAZIONE MISURE SU PC Funzioni Line Certification: Speciali : DELT Test Double-End-Line-Testing Automatic Sequence End-to-End Before the transmissive tests, using the same line under test, the SLAVE sends to the MASTER its data for the right identification, then the MASTER starts the test sequence related to the selected service (e.g. MODEM 56k). From the SLAVE s display it is possible to follow the progress of the test sequence and the related local results. Finished the tests the SLAVE sends automatically to the MASTER its results. The progress of the transmission is shown on the its display Coincidentally, from the MASTER s display it is possible to follow the progress of the tests sequence and the related local results. Received the data stream from the SLAVE, the MASTER s display it is completed with all the results (Central and Subscriber side), included the possible Bit-Rate estimation if selected some masks as ADSL, ADSL2+ or VDSL2 services. Pushing the F1 key it is possible to save the test on the internal memory.

13 ESPORTAZIONE MISURE SU PC Funzioni Line Certification: Speciali : DELT Test Double-End-Line-Testing Automatic Sequence End-to-End Finished the tests sequence all the results are shown on the summary table. All the possible fail results, related to the selected mask, are highlighted in red. Pushing the F5 View it is possible to analyze the graphic details of single transmissive measurement. Each graph (with exception of the Insertion loss) shows the local (Master) and remote (Slave) results with different colors: - Green: local unit - Violet: remote unit

14 Copper Pairs pre-qualification: SELT Automatic Sequence Introduction Applications for copper pairs qualification ACT6000 can perform many measurements in Single-End mode. To operate in confortable way it is possible to perform the measurements from the Central side without technician and remote instrument at the opposite side of the open line under test (with 4500 meters maximum lenght) By a special Automatic Sequence (available with the Advanced Software 1/II) it is possible to perform a complete copper pair qualification, electrics and transmissive tests included, in 90 seconds!

15 Line Qualification: SELT Automatic Sequence Cable setup 1 opened Line Config & Utility 7 From the Main Menu select the 7 Config. & Utility group and then 8.CABLE SETUP. By the arrows select the preponderant * Cable Type, then push Enter to confirm. Note *: preponderant it means the main sector of the line to be test, or the first going out cable from the MDF room if the test is performed by the Central Office.

16 Line Qualification: SELT Automatic Sequence End-of-Line finding by TDR opened Line 1 2 Before to start the Automatic Sequence it is suggested to find the End-of-Line echo by the TDR function (see slide No. 32) and verify the congruent line lenght according to the PVF related to the selected cable type. TDR Fault Locator Notes: Some local measurements (as the Electrics, Noise, Long. Balance-Loss and Next) are valid for any line lenght. Vice-versa for a possible valid SELT Insertion-Loss measurement it is necessary to find (manually by the TDR) the valid End-of-Line echo within 5 km of distance. Return-Loss: due to the impossibility to terminate the line-end for SELT Automatic Sequence, in some cases the bad result of the R.L. can be false, above all when the line under test is short (under meters) or when selected a Base Band mask (Voice or MODEM 56k). In this case it is suggested to apply the termination at the lineend (e.g. 600 Ohm for Base Band masks) and perform the R.L. measurement as single real time test see slide N meters PVF 0.600

17 Line Qualification: SELT Automatic Sequence Setup and Start opened Line 1 Finished the tests sequence all the results are shown on the test summary table. If some measured value is out of the preconfigured threshold limits the result is shown in red. About the Return-Loss see note on slide N 16 Selected the line service type (e.g. SHDSL mask) it is possible to start the test.

18 Line Qualification: SELT Automatic Sequence Setup and Start opened Line Pressing the View key it is possible to analyze the details of the electric and transmissive measurements.

19 SELTests single pre-configured real time transmissive measurements opened or loaded * Line Sequence Noise Ret-Loss Long-Bal NEXT PSD This operative mode (with continuously graphs update) it is very useful to select quickly the good line to assign the possible service according to some transmissive performances. * see the note on slide N 16

20 Electrics Tests by DMM Digital Multimeter opened or shorted * Line Introduction: After the SELT Test Sequence or previous indications, it is possible to perform some metallics measurements to verify the electrics parameters of the line under test, or to localize the possible faults / anomalies. By the DMM Function (allowed with the optional internal Module): - Extraneous AC/DC Voltage on the line (AC power influence or DC voltage coupling). - AC Capacitance to measure the mutual capacitance and Q values between a b wires. - DC Capacitance (capacitor discharge method) to measure the capacitance value (loads included as telephone devices) among a - b - and c (Gnd) wires. - Low Insulation finding, among a - b - and c (Gnd) wires. - Low Insulation location, among a - b - and c (Gnd) wires, by Resistive Bridge (RFL Function). - Loop Resistance between a b wires *, to estimate the line length and verify the junctions quality. - Resistive Line Balancement, between a b * related to c (Gnd) wires. - Impedance Response of the line or load connected to a b

21 Electrics Tests by DMM Digital Multimeter - VOLTAGE opened Line 1 4 DMM Multimeter Select Line voltage

22 Electrics Tests by DMM Digital Multimeter AC CAPACITANCE & Q opened Line 1 4 DMM Multimeter Select Capacitance

23 Electrics Tests by DMM Digital Multimeter DC CAPACITANCE opened Line 1 4 DMM Multimeter Select Capacitance

24 Electrics Tests by DMM Digital Multimeter LOOP RESISTANCE 1 4 DMM For this test it is necessary the support of another technician at the remote side of the line under test Multimeter Select Resistance Short the a - b wires according to the instructions highlighted on the advice.

25 Electrics Tests by DMM Digital Multimeter LOOP RESISTANCE Real time measurement (by ACT-18 optional module) 1 4 DMM For this test it is necessary the support of another technician at the remote side of the line under test Multimeter Short the a - b wires according to the instructions highlighted on the advice.

26 Electrics Tests by DMM Digital Multimeter RESISITVE BALANCEMENT 1 4 DMM For this test it is necessary the support of another technician at the remote side of the line under test Multimeter Select R-Balan R-Balan Short the a-b-c wires according to the instructions highlighted on the advice.

27 Electrics Tests by DMM Digital Multimeter - INSULATION opened Line 1 4 DMM Multimeter Select Insulation

28 Electrics Tests by DMM Digital Multimeter FAULTS LOCATION DMM For this test it is necessary the support of another technician at the remote side of the line under test RFL kω kω Short the right wires according the instructions highlighted on the advices.

29 ACT6000 Resistive Bridge Low Resistive Insulation finding examples b a c b a c b a c A Fault between one wire (i.e. b) and Ground (or other wire) B Fault between b and a wire, using the Ground reference (or other wire) C RX RX a RX b RX a RX b RL RY Rb-c (o a-c) Rb-a Rb-c Ra-c RY a RY b RY a RY b Fault between one wire (i.e. b) and Ground (or other wire) + Fault between one wire (i.e. a) and Ground (or other wire) b a c b a c D RX a RX b Rb-a Ra-c (o b-c) Fault between b and a wire + + Fault between one wire (i.e. a) and ground (or other wire) E RX a RX b Rb-c (o a-c) Rb-a Ra-c (o b-c) RY a RY b RY a RY b Fault between b and a wire + Fault between one wire (i.e. a) and ground or.. + Fault between one wire (i.e. b) and ground or Note: Assigned the right resistivity / km value of the conductors, the tester calulates and shows automatically on the display the related lenght of the RX and RY sectors.

30 Electrics Tests by DMM Digital Multimeter FAULTS LOCATION with extraneous DC voltage finding If during the Insulation test is detected an extraneous DC voltage among the wires connected to a b points and /or to c (GND reference), this advise will appears. WARING! DC VOLTAGE OVER THE LINE VERIFY LINE CONNECTIONS PRESS ANY KEY TO RESTORE In this case is not possible any Insulation test! DMM For this test it is necessary the support of another technician at the remote side of the line under test To localize the possible fault it is possible to select a special test among the functions of the Resistance/Insulation menu. The typical situation is a low insulation for water/oxide presence between the line under test (e.g. Pair 2) and one powered lines (e.g. Pair 1) as represented on the scheme below. Central Office battery set 48 V GND c b a services ACT6000 Resistive Bridge Low Insulations localization with extranesous DC voltage Tester to fault distance Ring Pair 1 Tip Pair 2 good wire Pair 3 RX RX RX RX R.fault R.fault R.fault good line Fault to line-end distance (strap) powered line line under test Rw Rw RY RY RY RY good wire strap GND

31 Fautl Electrics Tests by DMM Digital Multimeter FAULTS LOCATION Line multi-section setup Digital Multimeter b a c By a new menu, it is now possible to configure a multisection line, very useful setup to perfom possible accurate Loop Resistance and Fault Location tests m / 0,4 615 m / 0,57 21 m / 0,6 10kΩ

32 TDR Fault Locator / End-of-Line estimation opened Line 1 2 DMM The TDR function allows the localization of possible faults / anomalies on the line under test or estimate its total length. Any impedance mismatches on the line are shown as upward pulses when the impedance increases (up to the open circuit ), and downward pulses when the impedance decreases (up to the short circuit ) meters PVF To know the distance from the test point it is necessary to find the final echo adjusting the better range and move the Marker at the beginning of the echo as represented at the right picture. For accurate distance estimation it is suggested to select the proper cable type (as described on slide N 15) associated to the correct PVF value.

33 TDR Fault Locator / long term monitor opened Line quiet TDR Function By special setting, the TDR can capture occasional echoes before of the End-of- Line, due to occasional events as short circuit, false contacts, microinterruptions etc. as the example below. Distance to new echo Distance to end-of-line Normal mode quiet quiet Move the Marker on new echo Set peak mode and wait Set Relative mode

34 Events Tests Microinterruptions / Impulsive Noise Microinterruption Test Impulsive Noise Test

35 Special Utilities : Measurements saving and exporting Finished any tests, the results (data and graphics) can be saved on the internal memory of the instrument. The tests can be named by the keypad with 8 characters maximum. For example, typing Cable and Pair number C23_P36 (Cable No. 23 / Pair No. 36) or with last 8 numbers of the Subscriber Telephone number. Without the typing of any name, the test will be saved with the default data (test type and date). By pushing the View key all the saved measurements can be re-viewed in the same way as they were saved. The screenshot is exportable on the USB Pen- Drive as image in BMP format. By pushing the Export key the row data of the saved tests can be exported on the external USB Pen-Drive in CSV format. The CSV file can be opened by Windows Excel application. Selecting and managing the row data it is possible to convert these in graphs and edit the data base.

36 Special : CSV file opening Exported the CSV file on the USB Pen-Drive, and connected it to the USB port of the PC, a folder (named ACT-6000) will be found. Inside of the above folder will be found another sub-folder (named with the Serial Number of the instrument).. i.e. # Inside of the S/N folder will be found one or more folders related to the exported test types, for example: - the automatic SELT tests identified with M111, - the automatic DELT tests identified with M112. Example: inside the folder M112 (DELT Sequence) will be find: - Or a BMP image related to the previous screenshot exporting; - the CSV file related to a DELT Sequence saved with C28_CP36 name. Clicking on the CSV file (if the PC works with Windows Office) a Excel file will be automatically opened on which is included the tester identification and the tests parameters, the summary of the results and the row data of the spectral measurements, very useful to create possible interactive graphics Rumore locale (dbm) Rumore remoto (dbm) Ret, Loss locale (db) Ret, Loss remoto (db) Bilan, Long, locale (db) Bilan, Long, remoto (db) -80 Attenuazione (db)

37 Special : PDF Test Reports (by CSV file Conversion) By the new PC application ACT6000 CSV-PDF Converter is now possible to convert the CSV files related to the SELT or DELT test in PDF Test Reports. By the control panel, it is possible to select the CSV file to be convert. After the possible summary compilation and pushing the Generate Report, a complete Test Report will be shown. It can be saved in PDF format.

38 Special : PC link (by USB standard cable) By the new PC program ACT6000 Utility it is possible to connect the Instrument to the PC by a standard USB cable. This is an alternative method to the USB Pen-drive to export or import various data. After the Serial Com selection (assigned by Windows OS) the utility allows the download of BMP (screen shot), CSV files and the Cables database. Using the special Editor functions it is possible to edit and to upload to the instrument a new Cables database, Transmissives Threshold Limits and a possible Firmware updating.