Keysight Technologies E4981A, Service Manual

Page: 61 / 152

Chapter 4 59
Troubleshooting
Function Specific Troubleshooting
4. T
roub
lesho
o
ting
b. Click "Programs" and "MS-DOS Prompt" (or "Command Prompt") to open the DOS
(Command) Prompt window.
c. Type a ping command followed by the E4981A IP address as "ping xxx.xxx.xxx.xxx"
(where, xxx.xxx.xxx.xxx is the IP address such as 192.168.0.1 assigned in step 3-d.)
Press [Enter] key on the keyboard.
d. The external computer displays a message of ping command response from the
E4981A.
Figure 4-7 shows an example of normal result that indicates the IP address,
packet size, and a response time counted by the computer. The ping command is
repeated 4 times.
Figure 4-7 Example of normal ping command test result
If the E4981A doesn't return the response, the external computer displays a message of
"Request timed out" as shown in
Figure 4-8 . In this case, a failure in the PPMC PCA is
suspected.
Figure 4-8 Example of no response for ping command
To Check the GPIB
Procedure
Perform the E4981A performance test program. If the controller cannot detect the E4981A,
the problem seems in the PPMC PCA or the connection of the GPIB cable.