Service Guide E8364-90038 4-19
PNA Series Microwave Network Analyzers      Troubleshooting
E8362C, E8363C, E8364C Rear Panel Troubleshooting
Troubleshooting Systems with Controllers 
Passing the preceding test indicates that the analyzer's peripheral functions are operating normally. 
Therefore, if the analyzer has not been operating properly with an external controller, check the following:
• The GPIB interface hardware is incorrectly installed or not operational. (Refer to the embedded help in 
your analyzer.)
• The programming syntax is incorrect. (Refer to the embedded help in your analyzer.)