|In LinkWare Stats, you will see a graph similar to that below: |
What may seem strange at first, are the results from 250 MHz to 275 MHz. How can this be given the limit line stops at 250 MHz?
250.0 <= x < 275.0
In other words, these are records at 250 MHz exactly, no other frequency. If it wasn't done that way, a negative margin bar from -1 to 0 would include a 0.0 data point; which would be annoying.
A full version of LinkWare Stats is included in LinkWare PC..
Testing todays advanced cabling plants is so complex that a single Category 5e test report includes more than 400 data fields. With typical jobs including hundreds to thousands of links, even if you sift through all the results and see that they all pass, critical questions remain.
Fluke Networks has the answer with LinkWare Stats, a results analysis software option that integrates with our LinkWare Cable Test Management Software. LinkWare Stats generates statistics on the cabling links within your LinkWare database then transforms the performance results into summary graphics that give you the analytical information you need, fast.
LinkWare Stats gives you an instant overview of your installed cabling plants performance, with plenty of detail if you want it. Were you promised 3 dB of headroom above the limit line? In a simple picture, LinkWare Stats tells you if its there.
LinkWare Stats makes it easy for cabling contractors to demonstrate a level of professionalism and attention to quality that sets them apart in a competitive industry. It provides a customizable cover sheet and graphical summary of the entire installation job to demonstrate the quality of your work to your customer. Ever worked on a large job, only to discover after a week of testing that someone was using the wrong test standard or adapter? With LinkWare Stats, a quick review of the first days results immediately lets you know if youre on track as expected.
LinkWare Stats also allows analysis over a large population of installed products, so you can review performance by contractor. Whos doing the best terminations? If the average NEXT margins are 5 dB, why is one cluster of results only 2 dB? Are your near and far-end results consistent?
- Fiber Testing
|Worst Case and Worst Case Margin |
PentaScanner reports individual tests with the worst values. These are not comparable to worst margin test results from other testers, so they are not included in Stats calculations.
OMNIScanners can be set to operate in either worst value or worst margin mode. If results were taken in worst value mode, overall margin values are recorded, but not for main and remote individually, nor for worst pair or frequency. So these results would not be included in LinkWare Stats calculations.
3 dB and 4 dB Rules
Cat 5 and higher, and Class D and higher test standards say that when the attenuation is below 3 dB, the Return Loss is not evaluated against a limit. Also, when the attenuation is below 4 dB, NEXT is not evaluated. In either case, if the attenuation never goes above the amount described, no individual test result is calculated. With OMNIScanner, a margin is still calculated. On DSPs, no valid margin is calculated. In either case, these results do not figure into LinkWare Stats calculations for Return Loss or NEXT.
Fiber Results Without Limits
Some cable testers do not calculate a margin against a test limit when testing fiber. These results would not be figured into margin calculations in Stats.