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itnetworks.softing.com/XG
F R E Q U E N TL Y A S K E D Q U ES TI O N S
Q Does the NetXpert recognize XG PoE (Power over Ethernet)?
A
Yes, the NetXpert XG2 detects PoE, PoE+ and PoE++, PoE mode and min/max
voltages under load.
Q Why is the length wrong and all my outlets show split-pair errors?
A
This problem is common when laying cables on the distribution panel. Some
distribution panels loop the signals through boards that have LEDs, for example,
to display traffic or built-in noise canceling. These features change the cable
properties and thus influence the test results.
Q Why is the length wrong and all my outlets show split-pair errors?
A
This problem is very common when placing cables on distribution panels. Some
distribution panels loop the signals through circuit boards that have, for
example, LEDs to indicate traffic or integrated noise reduction. These features
change the cable characteristics and thus influence the test results.
Q What do the terms miswire, open circuit and short circuit mean?
A
Miswire is any incorrect pin assignment between both ends. An open circuit is
caused by an unfinished conductor between the near and far ends. This can also
happen when cables are cut. A short circuit occurs when two conductors are
shorted together.
Q What is the SNR margin?
A
The signal to noise ratio is determined by measuring the signal generated by the
far end (active remote/switch). The far end device transmits Ethernet signals,
which the NetXpert XG2 uses to measure the quality of the Ethernet signals. If
the signal jitter is outside the Ethernet spectrum, it affects the quality of the
signal, which is identified as SNR dB measurement. The SNR margin is the
margin between the measured value and the application's acceptable limit.