Agilent Technologies J3972A - Manual (Page 90)

Installation
Verifying the Installation
70
Out-of-Band Troubleshooting
For the Ethernet or Token-Ring telemetry interface, if the Activity LED is off,
verify that the probe is properly connected to the telemetry network and that there
is traffic on the network. Also, verify that you have the correct Physical Connector
selected from the Modify/View Interface Values menu.
If the ~ Line On or Power LED is off, verify that power is properly connected to
the probe and to the correct power source.
If the Fault LED is on, the probe failed the self-test. Repeat the installation
procedures and verification of installation. If you have an option installed, you can
look at each port’s Fault LED to see which port is generating the fault condition.
For the Token-Ring telemetry interface, if you are still having difficulty, call your
local Agilent service representative. For the Ethernet telemetry interface, continue
with the following “Ethernet Telemetry Interface” section.
Ethernet Telemetry Interface
If you selected Auto Negotiate for the Link Speed parameter, verify that the
connected Hub or switch supports this mode of operation. If you are not sure,
configure the link speed and full-duplex or half-duplex manually.
CAUTION If you manually selected the Link Speed, be careful to configure it correctly. If
you configure the Link Speed for 100 MB/s and you connect the probe to a
10MB/s network, the probe will generate 100% utilization for that segment.
If you manually selected the link speed, verify that you are using the correct
speed. Also, if you manually selected the link speed, verify that you are using the
correct mode of operation (full-duplex or half-duplex). 10MB/s Ethernet is always
half-duplex.
If you are still having difficulty, call your local Agilent service representative.