Technical data

Connecting Instruments to LAN 5
Agilent Connectivity Guide 123
plugs into the computer; it should be glowing steadily. If it is not
lit or flashes intermittently, you may have a cable problem, a
problem with the network card, hub, switch, etc.
b Try disconnecting and reconnecting or replacing each network
cable. Make certain you are using a known-good cable.
c Do any error messages appear on the computer screen or device
display? If so, attempt to resolve those errors.
d Restart your computer and the instrument.
e Can anyone else access the instrument from their computer? If so,
you may have a problem with your computer, account
management, or the routing of the network connections.
f Finally, try connecting the instrument directly to your computer
(see Figure 22, “Direct Connect,” on page 93). This eliminates all
routers, switches, hubs, etc. in the network. If Connection Expert
still does not recognize the instrument, the instrument may be
defective.
Verify PC and Instrument IP Address Configuration If the
instrument IP address is manually configured, make sure the subnet
mask is set correctly for the subnet to which the instrument is attached.
A symptom of an incorrect subnet mask is that the instrument does not
show up in the Connection Expert LAN discovery window but it can be
manually configured successfully.
If you have multiple NIC cards in your PC (for example, if you have a
hard-wired network connected to one router AND
a wireless network
connected to a different router), use the DOS Command Prompt to
execute an ipconfig /all command. The network address (the first two or
three octets of the IP Address) for each NIC card MUST be different.
Each instrument on the NIC card subnet must also use the same network
address.
Using the ping Command
If there are no hardware problems, but normal communication has not
been established, the next step is to make communication checks using
the
ping command. In addition, for private LANs only, you may need to
use the
route add command to establish communication. If you can
establish communication using these checks, but the web browser
display is not correct, go to Web Browser Checks.