OptiView
TM
Getting Started Guide
18
Testing Network Cables
Cable testing is performed through the 10/100BASE-T jack. Measurable cable
lengths are from 1 meter to 305 meters (approximately 3 feet to 1000 feet). The
correct cable type must be selected in the Cable Test screen to report correct
measurements. UTP 100 Ohm Category 5 is the default cable type selected.
It is not necessary to disconnect the far end of the cable for the length to be
measured. Cable length can be measured while the cable is connected to nothing,
or connected to an active hub, switch, or NIC. A cable is automatically tested
when it is connected to the 10/100BASE-T jack on the analyzer and during the
power-up sequence. If needed, the cable may be re-tested by pressing the Rerun
Cable Test button on the Cable Test screen, or by simply disconnecting and
reconnecting the cable to the analyzer.
Note
Due to the various manufacturing techniques used by equipment
vendors in NICs, hubs and switches, the length shown may be the
distance to a connector or cross-connect that is causing a larger
signal reflection than the end-equipment. Examining the Cable Test |
Twisted-Pair Detail screen shows the actual end-length and
reflection values. This is not an issue with non-terminated (open)
cables.
Changing the GBIC Module (Pro Gigabit version only)
To remove a GBIC module, press and hold the tabs on the sides of the GBIC
module and pull it gently out of the gigabit slot.
To install a GBIC module, make certain the GBIC’s “D” shaped connector is
aligned with the connector in the gigabit slot.
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