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Page 78

Appendix C: Examples of UTP Cable Faults

During the wire map test, you probably noticed that the indica-
tor lights on the remote probe (connected to the far end of the
cable) continue to flash. This is another indication of a problem.
If a cable has a short in the middle, the wire map looks like this:

Figure C-7. Bad cable: wire map of shorted pair.

The LPV is both a LP verifier and troubleshooting tool. It
identifies the faults and gives you the distance to the opens,
shorts, and split pairs.

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Содержание TS580A-R4

Страница 1: ...s a week Call 724 746 5500 or fax 724 746 0746 Mailing address Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com Customer Support Informat...

Страница 2: ...hen the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required t...

Страница 3: ...espetadas 4 Todas las instrucciones de operaci n y uso deben ser seguidas 5 El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de ba o lavabo s tano mojado o cerca de...

Страница 4: ...el instructivo de operaci n o como se indique en el aparato 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 13 Los cables de la fuente d...

Страница 5: ...ndo A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar n...

Страница 6: ...Double Diamond logo are registered trademarks of BB Technologies Inc Microsoft Excel Windows and MS DOS are registered trademarks of Microsoft Corporation UNIX is a registered trademark of X Open Comp...

Страница 7: ...tion Button 20 6 3 Main Menu 20 6 3 1 CAT5 6 UTP Cable Testing 21 6 3 2 CAT5 6 UTP LPV Level 1 22 6 3 3 CAT5 6 UTP LPV Level 2 29 6 3 4 Reviewing CAT5 6 UTP Test Results 32 6 3 5 CAT5 6 Basic Test 40...

Страница 8: ...ns 1 Specifications Power 2 9 V batteries one for test unit and one for probe Size Test unit 6 H x 3 125 W x 1 5 D 15 2 x 7 9 x 3 8 cm Probe 1 5 H x 1 5 W x 8 L 3 8 x 3 8 x 20 3 cm Weight Kit 2 05 lb...

Страница 9: ...ing improper lengths and low signal levels from hubs switches PCs and other LAN hardware It digitally certifies cables and devices in Gigabit Ethernet networks You can also decode your network devices...

Страница 10: ...port 2 3 What s Included 1 tester 1 tuner probe 2 CAT5e cables 1 RJ 45 to coax adapter 1 USB cable 1 results tablet Passed stickers 2 9 volt batteries 1 software CD 1 case This user s manual CAUTION W...

Страница 11: ...ed pair UTP plus the LPV s own sophisticated crosstalk timing and cable parameter tests that yield a UTP cable s category CAT3 CAT5 CAT5e CAT6 and speed capability 10 100 1000 Mbps And the LPV can use...

Страница 12: ...nstalled in steps First cables are installed Then hubs switches and PCs follow Cables and network interfaces are known as the physical layer The higher software layers provide addressing file transfer...

Страница 13: ...AT 3 5 5e 6 Speed Projection Displays test results as a graph projecting the cable s speed capability up to 1 Gbps UTP CABLES LAN Performance Verification Level 2 tests Adds Attenuation Graphs level o...

Страница 14: ...NAMING TEST RESULTS PRINTER AND TONER PROBE Naming tests Test names can be up to 16 characters each Toner probe Includes a full featured toner probe Tones coax and all 4 UTP pairs to locate wires in...

Страница 15: ...hat the cabling is terminated properly and test that the cable is proper for the intended use for example CAT5e for Gigabit networks Phase II Use the LPV after the switches and PCs are installed Befor...

Страница 16: ...port Use to transfer stored testing data up to 250 tests to a PC This requires Excel USB data transfer cable is included 4 Power and LCD backlighting Press the recessed power button To backlight the...

Страница 17: ...724 746 5500 blackbox com Page 17 Chapter 4 Faceplate Description Figure 4 1 LAN Performance Verifier and Remote Probe...

Страница 18: ...stickers included to wall outlets and LAN devices to verify their capability 3 You can print the results Printer Memory stores test results for up to 250 LAN performance verification tests basic UTP...

Страница 19: ...and release to turn ON the tester The backlighting screen appears see Figure 6 1 Pressing the select SEL button while this screen is present turns on LCD lighting backlighting Backlighting is importa...

Страница 20: ...lighting SEL SELECT Press to perform task Appears as u on LCD The UP arrow Appears as p on LCD The DOWN arrow Appears as q on LCD The SELECT button s function always selects the task But the function...

Страница 21: ...ax cables See Section 6 3 6 u NETWORK PORTS Perform tests on LAN hubs switches PCs devices Move the cursor to Network Ports and press Select u PRINTER MEMORY Printer memory is used to store the result...

Страница 22: ...split pairs plus distance to these faults and wire map BASIC TEST UTP does not perform LAN performance verification TRACER TONES ON Move the cursor to Tracer Tones On and press Select if you wish to...

Страница 23: ...EST Error Messages If there is a problem that stops the test from proceeding one of the following error messages will be displayed CABLE IS ACTIVE There is an active network port on the far end of the...

Страница 24: ...he cable is installed in a wall it is almost certainly a solid core wire Preassembled cable with end fittings already attached is usually stranded cable Also stranded cable is more flexible than solid...

Страница 25: ...es until you are prompted to connect the Remote Probe and perform a wire map test If all is OK testing will finish the speed screen is displayed NOTE If there is a problem with the cable the problem w...

Страница 26: ...ble to follow the tone The Main Unit s wire map test is triggered when the Remote Probe is connected to the far end of the cable there are no buttons to push The wire map tests for correct cable pairi...

Страница 27: ...gure 6 13 LPV Level 1 final screen when you see this Level 1 is completed and available for review When the above screen appears the Level 1 LPV is complete If you select REVIEW SAVE you will enter th...

Страница 28: ...r and do not continue to Level 2 testing The next sequential Reading Number 1 250 will be assigned along with any name that has been created see EDIT TEST NAME below LPV TEST PORT Continue to Level 2...

Страница 29: ...ification Level 2 this screen appears LAN Performance Verification Level 2 adds to the battery of tests conducted in Level 1 by testing the cable with real live data from any hub switch or PC NOTE The...

Страница 30: ...cable Level 2 adds to the testing with the use of real live data from a NIC hub or switch Use Level 1 for new cable installations or anytime a LAN device hub switch PC is not available Figure 6 17 Te...

Страница 31: ...s the down arrow key q to continue Data Signal Levels Immediately following the link pulse test the Main Unit tests the data signal levels from the LAN device The levels are not displayed at this time...

Страница 32: ...Chapter 6 Operation Figure 6 20 Review create a name for the test and or save the test results 6 3 4 Reviewing CAT5 6 UTP Test Results Figure 6 21 Review the readings from the most recent test or sto...

Страница 33: ...n came CAT5 used in networks up to 100 Mbps Followed by CAT5e gener ally considered adequate for up to 1000 Mbps networks As you become familiar with cable category you will notice that few cables get...

Страница 34: ...et 330 feet 100 m is the longest cable allowed by the 802 3 standard The LAN Performance Verifier can test cables up to 1250 feet 381 m in length Propagation delay The time it takes for a data signal...

Страница 35: ...f the cable SPLIT OK The wire contains no split pairs See Appendix D for a definition of split pairs and notes on making a correct cable MAP OK The pair wiring of the cable is correct See Appendix D P...

Страница 36: ...e in a noisy environment large electro mechanical machines etc Figure 6 26 A correct wire map for a straight through cable WIRE MAP The wire map displays the pairing of the wires in the cable The exam...

Страница 37: ...the propagation delay and skew for each pair in the cable Large variations between pairs indicate trouble NOTE A given pair s skew is the difference in propagation delay between that pair and the slo...

Страница 38: ...plenty of headroom Press the down arrow key q to continue The two examples above show the differences between Gigabit devices and 10 and 100 Mbps devices With a Gigabit device it is possible to view r...

Страница 39: ...his to the test data gathered during Level 1 testing creates Level 2 testing The end result of LAN Performance Verification Level 2 is the speed graph shown above It verifies the measured data speed c...

Страница 40: ...Test results option screen EXIT See Section 6 4 for Saving and Naming instructions NOTE Once a reading is SAVED it is too late to create a NAME 6 3 5 CAT5 6 Basic Test Test UTP for opens short split...

Страница 41: ...Basic test results can be stored in Printer Memory NOTE BASIC TEST UTP is often used when a cable fails to pass the LPV test Or it is used to test 2 pair UTP wiring LPV can only be performed on 4 pair...

Страница 42: ...CABLE END A voltage is present on one or more of the cable pairs or the REMOTE PROBE is connected to the cable end when it is not needed You will need to unplug it to proceed NO CABLE There is no cab...

Страница 43: ...e Probe needs to be connected only for a brief period Flashing LED s indicate the test is pro gressing A steady LED indicates the test is completed This saves you an extra trip to retrieve the probe I...

Страница 44: ...res The map above indicates that the first pair 12 Pins 1 and 2 is 203 feet long and terminates in Pins 1 and 2 12 on the far end of the cable If there were any problems they would be dis played Press...

Страница 45: ...Wire map and toning is also available from this menu Coax cable test is a quick test and does not perform LAN Performance Verification Test results can be stored in Printer Memory RJ 45 COAX ADAPTER...

Страница 46: ...F connector on the Main Unit and select coax The test begins At the beginning of the test the far end of the cable should not be connected to anything Figure 6 45 The coax pair Pins 1 and 2 and lengt...

Страница 47: ...IEW TEST Review test results before they are SAVED After reviewing the test results you can return to this screen SAVE READINGS Store the results from the latest test in PRINTER MEMORY for later print...

Страница 48: ...ss the DOWN arrow labeled REVIEW SAVE or SAVE and the above screen appears Select EDIT TEST NAME NOTE Creating a name EDIT TEST NAME for a test result is optional The LPV automatically assigns a seque...

Страница 49: ...t for creating the next cable reading name See the next section Naming Your Tests for more details Naming Your Tests Test name line A maximum 16 character name appears here Rotating letter loop Figure...

Страница 50: ...always copied up to the TEST NAME line If it is a space a space is copied If it is a u the cursor moves to the right 4 To exit back to the menu use the arrow keys to position MENU as the left most cha...

Страница 51: ...amiliar with the EDIT TEST NAME routine try using EDIT OLD NAME The EDIT OLD NAME routine requires a prior cable name to edit Perform a cable test and when naming select EDIT OLD NAME It speeds creati...

Страница 52: ...mbined Level 1 and Level 2 Basic UTP tests and coax tests for later printing After each test is conducted you have the option to review save and or name the test results readings in printer memory for...

Страница 53: ...There is no way to selectively erase readings This screen verifies that you wish to erase all of Printer Memory Figure 6 56 Erase screen FLASH MEMORY The test readings are stored in nonvolatile flash...

Страница 54: ...connected to the PC for the driver to properly install STEP 2 TRANSFERRING TEST READINGS LPV TO PC 1 Connect the LPV to a USB port on your PC and turn the LPV ON 2 Run the LPV xls spreadsheet found o...

Страница 55: ...Excel Select FILE OPEN and select LPV xls either from your LPV software CD or hard drive 2 Excel asks you if you wish to Enable macros Select Enable macros Say No if asked if you want to open as a Re...

Страница 56: ...it will respond with the error message No Network Testers found Verify the tester s power is ON and try again If the problem still persists see Error messages below 6 Press the Import Readings button...

Страница 57: ...able 2 etc in the spreadsheet along with any custom name that you created The Reading can only be modified in the spreadsheet NOTE The LPV allows duplicate custom names but when they are printed in Ex...

Страница 58: ...0 blackbox com Page 58 Chapter 6 Operation Figure 6 63 LPV XLS spreadsheet Typical LPV printout NOTE If Level 2 testing was not performed the Data Signal Levels and the LP Verification 2 charts will h...

Страница 59: ...724 746 5500 blackbox com Page 59 Chapter 6 Operation Figure 6 64 Sample LPV printout...

Страница 60: ...com Page 60 Chapter 6 Operation 6 7 Network Testing Display the advertised and negotiated speeds of LAN devices and view the signal levels of real live data Figure 6 65 Network ports Figure 6 66 Use r...

Страница 61: ...ominator for communicating on the link For instance a Gigabit switch with an advertised capability of 1000 Mbps full duplex will negotiate down to 100 Mbps half duplex when connected to a 100 Mbps hal...

Страница 62: ...made to a live hub switch or PC without affecting the communication of the other connected devices See the following paragraphs in this section for examples of advertised capability and the Signal Dat...

Страница 63: ...evices use all four pairs In Figure 6 70 the LPV has found a 100 Mbps device on Pairs 3 6 that is capable of transmitting at 10 Mbps and 100 Mbps at half duplex Typically devices that transmit on Pair...

Страница 64: ...show the differences between Gigabit devices and 10 and 100 Mbps devices With a Gigabit device it is possible to view real live data on all four pairs whereas a 10 Mbps and 100 Mbps device can only t...

Страница 65: ...speed detailed steps are on the next page 1 Plug in one PORT to the LEFT SOCKET of the LPV 2 Pause for a few seconds and then plug the second PORT into the RIGHT SOCKET 3 The LPV displays the negotiat...

Страница 66: ...in two ports screen CAPABILITY SCREEN This screen or similar appears as the LPV monitors the devices When complete the LPV will automatically continue to the next screen Figure 6 77 Capability screen...

Страница 67: ...aximum of the last data rate used For example if a PC and a switch communicate at 100 Mbps and a new Gigabit switch is installed the PC port may drag the switch down to 100 Mbps even if the PC is capa...

Страница 68: ...CON Use the Port Beacon to locate cable connections in crowded areas To activate the port beacon move the cursor to Port Beacon and press Select The Port Beacon is a link pulse that the Main Unit send...

Страница 69: ...oting a LAN you might need a straight through cable coupler The LPV s Main Unit jacks makes it easy The tester must be OFF to use this feature Figure A 1 Straight through coupler NOTE If you suspect o...

Страница 70: ...roubleshoot network problems at the software level TCP IP basics TCP IP has 4 layers 1 The lowest layer is the Physical layer that deals with cabling 2 The next layer is the Internet layer This is the...

Страница 71: ...s included with most systems and there are also many shareware implementations USE Determine if a workstation is connected to the network Routers servers and workstations are identified by an IP addre...

Страница 72: ...enter nslookup www blackbox com and see if the IP address is displayed If it is your DNS appears to be working correctly Ping yourself You can use the ping com mand to ping yourself either using your...

Страница 73: ...e command line prompt enter ipconfig The server s IP address will be displayed Return to the earlier workstation and perform the ping test to this address tracert USE Determines how many router hops a...

Страница 74: ...hen enter your command On Windows XP systems click on START PROGRAMS and select ACCESSORIES then COMMAND LINE Then enter your command On other systems select Run from the main menu and enter cmd Then...

Страница 75: ...good cable A cable that passes its first set of cable tests will have summary screen similar to this Figure C 1 Length Timing summary screen of a good cable Bad cable Split pair If errors are found th...

Страница 76: ...nce to the split pair to help locate it and facilitate repair High cost certifiers display dBs of crosstalk but do not help you locate the repairable split pair fault Turn on the trace tones and use t...

Страница 77: ...wn The skew difference in delay between pairs is much greater than 50 ns Another problem is that the cable length is only shown as 98 feet Press details and continue the tests All will become clear wh...

Страница 78: ...e probe connected to the far end of the cable continue to flash This is another indication of a problem If a cable has a short in the middle the wire map looks like this Figure C 7 Bad cable wire map...

Страница 79: ...twisted together to minimize crosstalk If a wiring error is made and one pair of wire is split with another split pairs the excess crosstalk will most likely keep the link from operating properly To m...

Страница 80: ...45 sockets and plugs The RJ 45 socket has eight pins The pins are numbered 1 to 8 Looking at the socket with insertion key facing down Pin Number 1 is to the left Figure D 1 Colors The first color is...

Страница 81: ...724 746 5500 blackbox com Page 81 NOTES...

Страница 82: ...724 746 5500 blackbox com Page 82 NOTES...

Страница 83: ...724 746 5500 blackbox com Page 83 NOTES...

Страница 84: ...ection products to media converters and Ethernet switches all supported by free live 24 7 Tech support available in 30 seconds or less Copyright 2011 Black Box Corporation All rights reserved Great te...

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