#LOOPBACK PLUGS MANUAL#
#LOOPBACK PLUGS PLUS#

Backlit display allows test readings to be visible in dark areas.

Tests both shielded and unshielded cable in local and remote mode.

Includes (4) remote locator plugs, each programmed with a unique ID number so multiple drops can be tested before moving the plugs to new outlets.

#LOOPBACK PLUGS PLUS#

Identifies (8) different wiring schemes plus (1) temporary user-defined scheme.

A pin mapping of the current cable is displayed while the unit performs the test.

Easy to read LCD display shows continuity, opens, shorts, and pin mismatches.

Please note: the Network Cable Tester requires a separate 9V battery (not included) to operate. The cable tester also identifies several common pinnings and displays the applications for each. The network cable tester provides a basic continuity test with a pin-map that will identify wiring errors, allowing them to be quickly corrected. If several cables need to be tested, users can put a loop-back plug on the end of each cable run and go to the other end to test and identify each one. The network cable tester uses remote loop-back plugs, each with their own unique, easy-to-identify ID number. For a diagnostic tool like this to be useful, it has to work 100% of the time, but this experience has shown that it's very 's Advanced Network Cable Tester (RJ45) lets you test several long network cables faster and more efficiently than ever before.

#LOOPBACK PLUGS MANUAL#

Consult the equipment manual of the equipment being tested to determine if gigabit loopback is supportedįrom all my testing and research on this subject my conclusion is that unless you're dealing with exclusively ancient 100Mbps equipment, the loopback adapter concept is now obsolete due to advanced signalling in modern switches. The Gigabit Loopback Jack & Plug is intedned solely for testing systems where the Near End Crosstalk (NEXT) function can be disabled and the equipment under test can support being looped back to itself. Not all gigabit Ethernet systems support loopback operation. Gigabit switches may behave differently (but I’m not sure what the spec says or the real-world variation is)Īlso, even commercial loopback adapters come with a lengthy caveat regarding gigabit compatibility Meaning it’s often only useful on NICs which let you disable crosstalk detection.

Gigabit NICs have crosstalk detection (detects how much signal interferes onto other wires), and will likely decide that the loopback is an extreme amount of crosstalk - any may not show link. If you want to use your plug on appliances from other manufacturers too, that maybe need a higher throughput during testing, it may be needed to create an eight pin self-loopback plug. Turns out 'Gigabit loopback is a limited concept' This is the simpliest version of a four pin self-loopback plug which is used to test interface rx/tx operations on FastEthernet (100mbit/sec) interfaces. so maybe 100Mbps works ONLY on 100Mbps switch? I could live with that if that's how that works, but what about 1Gbps loopback with 4 pairs? Why is that not lighting up?)Ĭan anyone shed some light on this? I just don't get why it's behaving the way it is. But maybe that's to be expected because that's also what happens when I plug in my other 2 pair 100Mbps RJ45 loopback.

The other weird thing is that 1Gbps switch that's 100Mbps capable doesn't detect this at least as 100Mbps (I could live with it not showing up as 1Gig). I also tried several switches, and it's always the same: 100Mbps lights up, 1Gbps doesn't. I'm not new to crimping cables either, so I'm 99% sure I succeeded in crimping it well. I triple checked my pinout and I just can't get it to work. The obvious problem could be that I crimped the cable wrong, but now I'm on the 3rd one and I get exactly same frustrating results. 100 Mbps port on 100 Mbps switch lights up no problem.When I plug it into a 1Gbps port on 100/1G switch the port does not light up.

Loopback plugs