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  ● 

Tests for a physical hub/switch or PC connection on the cable  

    that is plugged into the jack. If a device exists, the wiring pairs  
    involved are displayed on the adjacent LEDs. See below.

  ● 

Places a tone and a wiring pattern signal on the cable  

 

    connected to the jack. Use the Remote Probe and the tone  
    to trace the location of the cable (e.g. in the wiring closet).   
 

  Displays the pair configuration and other characteristics of the  

    cable on Remote Probe's LED display. Further explanation of the  
    use of the Remote Probe can be found in section V "Learning the  
    Remote Probe's faceplate.” 

Cable Tests without the use of the Remote Probe.

The TVR1000 Main Unit’s Cable Test jack senses LAN device 
connections (without the use of the Remote Probe). Connections 
are displayed on the LED panel below the jack (e.g. if LEDs “1,2” 
and “3,6” are lit, it means that pairs 1,2 and 3,6 are connected to a 
device). The LAN device can be ON or OFF. This test is most often 
used to verify the presence of a LAN device at the far end of a cable 
but it also can be used to locate cables that cannot support 100 
or 1000 Base-T operation (some 100 Base-T and all 1000 Base-T 
devices require 4 pairs of wire so all 4 LEDs must light). In summary, 
the tests performed by the Cable Test jack (without the Probe) are:

  ● 

Tests connection to hub (cable pairs connected to hub).

  ● 

Tests connection to PC (cable pairs connected to PC).

  ● 

Tests number of pairs required by a PC or hub (plug directly  

    into PC or hub).

 16

Section V. Learning the Remote Probe's Faceplate

The TVR1000’s Remote Probe adds cable tracing and 
pairs testing capability to the TVR1000. It must be used 
with the Main Unit’s Cable Tests jack. The Remote 
Probe traces cables and tests the pairs configuration of 
the cable by tracing signals placed on the cable by the 
Cable Tests jack on the Main Unit. By combining cable 
tracing and pairs testing in one unit, the TVR1000 Re-
mote Probe has uniquely turned a two step procedure 
into a one-step process.

Tests performed by the Remote Probe (using the Main Unit’s 
Cable Tests jack)

  ● 

Locates miswired cables.*

  ● 

Locates missing cables.*

  ● 

Tests installed cables (pairs wired and type).

  ● 

Tests patch cables (pairs wired and type).

  ● 

Locates and traces inactive cables.

  ● 

Locates active cables to hubs/switches and PCs 

    without interfering with LAN performance.

* Main unit only. Does not require the use of the Remote Probe

Tracing tones.

 The Remote Probe’s tip traces tones transmitted 

from the Main Unit's Cable Test jack. Any tone detected is amplified 
and emitted from the Remote Probe’s built-in speaker. 

Use this capability to trace the location of wires inside a wiring 
closet or wherever cables are bundled. For instance, it is very com-
mon for switch ports to be mislabeled or not labeled at all. These 
problems can be solved by placing a tone on the wire

 17

CABLE TESTS Jack

The Cable Test section of the Main Unit 

is an easy-to-use and very powerful 

part of the TVR1000. 

Содержание TS029A-R4

Страница 1: ......

Страница 2: ...hub switch to verify the device type speed and duplex single port test Test example 2 Cabling a PC to a switch Inline test Test example 3 Testing a switch or PC at the far end of a cable for activity using the Main Unit s 10 100 1000 LAN tests section Test example 4 Testing a switch or PC at the far end of a cable for continuity using the Main Unit s Cable Tests section Test example 5 Tracing a ca...

Страница 3: ...00MB s half or full duplex See example 1 Is the hub switch PC reducing my LAN speed See example 2 Does the hub switch PC appear as such See example 1 LAN cabling questions answered Is a hub switch PC connected to my cable See example 4 Does my hub switch PC require 2 or 4 pair cable See example 4 What pairs are terminated in my cable See example 6 Where is my cable in the wiring closet See example...

Страница 4: ...rstanding of Base T LAN terms such as hub switch and PC and are aware that every connection to a LAN device requires the use of a straight thru or crossover cable It does not expect you to be a LAN expert 4 TVR10 100 1000 TVR1000 List of Functions The TVR1000 performs the following functions 10 100 1000 BASE T LANTests The TVR1000 plugs into active hubs switches and PCs to verify 10 100 and 1000 B...

Страница 5: ...sing theTVR1000 after the hubs switches and PCs are installed BeforeconnectingthecablestoLANdevices verifythateach hub and switch port and PC are operational To do this Plug the 6 TVR1000MainUnit s10 100 1000LANTestjack greenborderedjack directly into the device use the supplied straight thru patch cable and verify the equipment s Device Type i e is it a hub switch or PC and its maximum speed 10 1...

Страница 6: ...re connected to the hub switch or PC Indicates whether hub switch or PC expects 2 or 4 pair cable SPEED DUPLEX LEDs Shows 10 100 and or 1000 MB s Color shows full or half duplex Single port and inline mode TONE GENERATOR PROBE Generates a locating tone for use by the Remote probe The Remote probe finds cables in crowded wiring closets etc by detecting the tone gener ated by the main unit Also usefu...

Страница 7: ...EEN JACK Single port and Inline tests The most used jack of the three is the Green jack named by its green border All three jacks will verify the device type hub switch PC the presence of Data and Link pulses and Speed Duplex but the Green jack is used most often because it is a straight thru connection to the tester s circuitry making it the best choice for single port tests If a device is plugge...

Страница 8: ... TVR1000 plug two LAN devices into the leftmost jacks making a straight thru connection between the two devices Allow 3 seconds between plugging in devices the time it takes the TVR1000 to make a read ing A reading is taken for each device and displayed across two columns of LEDs The device that appears as hub or switch has its column of LEDs as does the device that appears as a PC For communicati...

Страница 9: ... negotiated speed Speed and Duplex are important considerations because two LAN devices will not to communicate unless they both are operating at the same speed and duplex For more detailed information about Data and Link pulses see Appendix B Negotiating the speed between two LAN devices When all de vices were 10 Base T half duplex two LAN devices linked together operated at 10 MB s half duplex T...

Страница 10: ...le pairs connected to PC Tests number of pairs required by a PC or hub plug directly into PC or hub 16 SectionV Learning the Remote Probe s Faceplate The TVR1000 s Remote Probe adds cable tracing and pairs testing capability to the TVR1000 It must be used with the Main Unit s Cable Tests jack The Remote Probe traces cables and tests the pairs configuration of the cable by tracing signals placed on ...

Страница 11: ...e Remote Probe decodes the wiring data sent by the TVR1000 Main Unit s Cable Test jack the 18 same jack that transmits the tone and displays the results of the decoding on the Remote Probe s four LEDs The LEDs meaning is defined by it labeling 1 2 3 6 etc color Off Green or Red and direction of scanning top to bottom or bottom to top Labeling If the LED labeled 1 2 is ON wire pair 1 2 is wired The ...

Страница 12: ... The TVR1000 can be connected to any LAN device even when the LAN is operating When the Main Unit is connected it will display the device s Data and Link pulses as well as its Device Type hub switch PC Speed and Duplex II Inserted inline between two LAN devices The TVR1000 can be inserted in a LAN segment without disrupting LAN communications between the two LAN devices Because the TVR1000 can dis...

Страница 13: ... and duplexes all appropriate LEDs will light Analysis of test example 1 Using the Green jack to verify activity and whether the device is a hub switch or a PC The first step in determining whether the LAN device is operating and whether it is cabled as a hub switch or PC is to plug the device into the GREEN JACK The LEDs on the left side labeled DATA and LINK display whether a pulse received from ...

Страница 14: ...ake the connections Plug a straight thru patch cable provided between the GREEN JACK and the wall plug that connects to the switch Use the other straight thru patch cable to connect the middle jack of the TVR1000 to the LAN port on the PC the middle jack is a straight thru connection to the GREEN JACK A straight thru connection now exists between the switch and the PC assuming no crossover cables ...

Страница 15: ...on the far right making a crossover connection between the two devices Once both columns have a LED lit the devices are communicating and the required patch cable has been determined i e if the two leftmost jacks are being used a straight thru patch cable is required to make the connection 26 If only one column of LEDs comes on in either jack configuration you are not communicating If this is the c...

Страница 16: ...vity 28 between and test You should see activity a Data Link LED and a Speed Duplex LED If you don t the LAN device is faulty If you do the cable is faulty Test example 4 TEST for Hub Switch or PC at the far end of a cable using theTVR1000 s CableTest Jack continuity test Note This test uses the CABLE TESTS section of the Main Unit to perform its tests It is a quick way to determine the number of ...

Страница 17: ...Main Unit s tone generator circuitry steps the tone from one pair to the next i e 1 2 then 3 6 then 4 5 then 30 7 8 Listening to the missing gaps in the tone signal can some times be helpful in understanding a problem Maximum sensitivity occurs when the Remote Probe s tip is held parallel to the conductors carrying the tone It is normal for the volume to change along a cable s path volume can chan...

Страница 18: ...s if a device has autocrossover capability Number of pairs All 10 Base T and most 100 Base T devices called 100 Base TX use 2 pairs to function but 100 Base T X4 devices and all 1000 Base T devices require 4 pairs 33 see Appendix A See note below for required pairs INVERTED PAIRS If any of the pairs are present but have incorrect polarity i e the 1 2 pair is really 2 1 the pair s LED will light re...

Страница 19: ...standard for telephones this configuration is never used to connect network devices The pinouts do not match what is required for Ethernet AT T paired configuration also known as AT T 258A EIA TIA 568B Twisted Pair Networks The older 10Base T standard defined and required pairs 1 2 and 3 6 to be wired but all new cabling almost always includes the other two pairs 4 5 and 7 8 This is because some 100 ...

Страница 20: ...f wire must be twisted together after crimping the wire should be twisted right up to the connector Do not make the number one wiring mistake Split pairs a wire from one pair is swapped with a wire from another pair To minimize mistakes use a standard color code throughout your project See the prior pages for the correct connector pin numbers associated with each Base T pair and the most popular c...

Страница 21: ...on the other hand can communicate at multiple speeds Most LAN devices are capable of negotiating down to lower speeds to be compatible with other devices As an example it takes two 100Base T full duplex devices to establish a communication link at 100 MB s full duplex See 100 and 1000 Base T Link Pulses and Data packets on the following page for additioanl combinations of devices HUB SWITCH PC SPE...

Страница 22: ...ring link pulse and data transmission the link speed and duplex will be displayed on the Speed Verification LEDs Notes Some single speed 100 and 1000 Base T devices do not send link pulses just data packets Also 41 some devices are programmable allowing you to force their speed and duplex Forced devices likewise may not send link pulses Because the TVR1000 uses link pulses to determine the speed an...

Страница 23: ...ut errors made on the other jack by swapping wires on the correct wall jack This mixes pairs which makes LANs unreliable may cause LAN ports to drop to low data rates causing bottlenecks in the LAN operation Wire both sides of cables correctly and remember two wrongs do not make a right If there is a short or open on pairs 1 2 and 3 6 all communications will be prevented If there is a short or ope...

Страница 24: ...ght in Straight order If you suspect a problem with the Main Unit replace the battery weak tone generator dim LEDs etc The battery compartment is located in the lower back of the Main Unit Remove the snap fit cover Use a 9V alkaline battery NEDA type 1604A Testing the Remote Probe To test the Remote Probe s tone detec tion capability hold the probe s tip next to the Main Unit s Cable Tests jack and...

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