Sifos Technologies PhyView PVA-3000, Reference Manual

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PVA-3000 Reference Manual
December 2, 2019 Sifos Technologies Page
66
3.16.5. Example 5: Measure Wideband Power Loss of Line Loss Impairment given 100BaseTX DUT
Test port 1,1 should be connected to a DUT that supports 100BaseTX operation.
Hint: If all pairs are impaired, then it won’t matter whether DUT links as MDI or MDI-X. Measure loss on either pair.
Menu Task Screen Shot
Port Select Select the port to use for measurements
Click on
Port 1 in Slot 1 on the Slot Port Select
menu.
Port
Config Configure the port to add the 100m Line
Impairment on Pair 3
Select the Port Config Tab.
Select Impair All under 100 Meter Cat5e
Click Apply Selected Port Settings
Link
Config
Configure the Test Port speed, polarity and duplex
settings.
Select the Link Config Tab.
Select 100BaseTX under Link Speed
Click Arm Configuration
Click RE-LINK
Meters
Measure Power with line impairment switched in.
Select the Meters Tab
Select 100 under Link Speed
Select Power under Meter Type
Click Measure
Port
Config Configure the port to remove the 100m Line
Impairment from Pair 3
Select the Port Config Tab.
Select No Impair under 100 Meter Cat5e
Click Apply Selected Port Settings
Meters Measure Power with line impairment switched in.
Select the
Meters Tab
Select 100 under Link Speed
Select Power under Meter Type
Click Measure
Conclusion: Wideband power loss of the Line
Loss impairment is
-
0.3 dB -
-
7.5 dB = 7.2 dB .