Service Guide N5242-90001 4-19
PNA Series Microwave Network Analyzers Troubleshooting
N5242A Rear Panel Troubleshooting
Ping Command
The analyzer has the built-in capability of performing a “ping” operation. Ping will request
the analyzer to send a few bytes of information to a specific LAN device. That device will
then signal the analyzer that it has received the information. The analyzer computes the
approximate round trip time of the communication cycle and displays it. For a full test of
two-way communications, a ping test should be performed in two directions.
• First: you should ping from the analyzer to the local area network.
• Second: you should ping from the local area network to the analyzer.
NOTE
In the second case, any other network device capable of sending a ping
command could be used, assuming it is connected to the same network. This
could be a computer or even another analyzer.
How to Ping from the Analyzer to the Local Area Network (LAN)
Follow the steps below to verify proper LAN operation (assuming you have a functioning
LAN). If no network LAN is available, see “Testing Between Two Analyzers” on page 4-20.
1. Make sure the IP address on the analyzer is set properly and that it is unique. If unsure
how to check the IP address, refer to the embedded help in the analyzer.
2. Make sure the subnet mask is 0.0.0.0. If not, note the current setting (to allow setting
it back later) and then set it to 0.0.0.0.
3. Find and note the IP address of another working LAN device on the same network.
Make sure this device is turned on, connected, and is functioning properly.
4. To ping the network device:
a. If the Windows Desktop is not displayed, press UTILITY , then ,
then to view the
Windows Taskbar menu at the bottom of the display.
b. On the
Windows Taskbar menu, click Start, point to Programs, Accessories, and then
click
Command Prompt.
c. The command prompt window is displayed.
d. At the prompt, type ping xxx.xxx.xxx.xxx
1
and press ENTRY on the front
panel. Refer to Step 5 for the results of a successful ping.
5. The analyzer attempts four cycles of communications with the indicated LAN device.
• It displays the time it took to complete each cycle.
• Each cycle times-out after one second if no communication is established and the
message, Request timed out, is displayed.
• It is common for the first of the four cycles to time-out even though subsequent cycles
pass.
• See below for an example output of a successful ping.
1. The letters x represent the IP address of the other device on the network.
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