JDS Uniphase IP Video Test Option HST-3000, User Manual

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Chapter 2 Running Cable Diagnostics
About cable diagnostics
42
HST-3000 Ethernet Testing User’s Guide
About cable diagnostics
Before testing 10/100/1000 electrical Ethernet, IP, or TCP/
UDP, you can use the HST-3000 with an Ethernet SIM to
examine the state of the cables used to transmit 10/100/1000
electrical signals. Typically this involves out-of-service testing
to determine the link status, the pair status of each MDI or
MDI-X pair, the pair assignments for 1000M links, the polarity
for each MDI pair, and the pair skew. You can also use the
HST to verify whether or not Power over Ethernet (PoE)
service is available on the link (per IEEE 802.3af). Finally, if
the link is inactive, you can use the HST to determine the
nature of the fault.
You must use the R/T 1 port on the Ethernet SIM when
running cable diagnostics.
Running cable diagnostics
Running cable diagnostics involves connecting to the link,
selecting the Cable Diagnostics application, and then
observing the measurements provided in the Cable Status
results category.
To run cable diagnostics
1 Power on the HST-3000.
The Ethernet Measurements menu appears, listing the
applications for 10/100/1G electrical Ethernet testing.
2 Select the Cable Diagnostics application (see “Launching
an application” on page 28 ).
A “Please Wait” screen appears, indicating you should
connect the HST to the link using the R/T 1 port on the left
side of the Ethernet SIM, then the Cable Status results
appear, indicating that the link is inactive and results are
unavailable.