Agilent Technologies N5242A Service Manual page 95

PNA Series Microwave Network Analyzers
N5242A
Set the IP addresses on two analyzers. The addresses can be set to anything, but they must
be different. Make sure the subnet mask and gateway addresses are set to 0.0.0.0 and
that the LAN is active on both analyzers. Connect the two analyzers together using either
a crossover cable or a crossover hub.
Now follow the steps in
on page 4-19 to have the first analyzer ping the second analyzer. When done, repeat the
procedure having the second analyzer ping the first. If both procedures function properly,
the LAN circuitry on both analyzers is verified.
If neither function properly:
• One or both IP addresses could be wrong.
• One or both LAN states could be set to off.
• The crossover cable could be miswired.
• One or both analyzers could be defective.
If possible, eliminate the possibility of a defective analyzer by substitution of a known
working unit. Once the analyzer has been proven to be working properly, concentration can
be placed on the network itself to determine the cause of the failure.
Constructing a Crossover Cable
A crossover cable can be made from a standard LAN cable by connecting pin 1 from each
connector to pin 3 of the other connector, and pin 2 from each connector to pin 6 of the
other connector.
1. Strip away a few inches of the outside jacket insulation from the middle of a standard
LAN cable that has an RJ-45 connector on each end.
NOTE Pins 1, 2, 3, and 6 of the connectors must be located to determine which wires
to cut in the following steps. Most, but not all, LAN cables use the color
coding listed in
will have to determine the locations of the appropriate wires before
proceeding with this procedure.
Service Guide N5242-90001
"How to Ping from the Analyzer to the Local Area Network (LAN)"
Table 4-3. If your cable does not use this color scheme, you
Troubleshooting
Rear Panel Troubleshooting
4-21