4-22 Keysight N5221A/22A Service GuideTroubleshootingRear Panel Troubleshooting4-4. If the Window Desktop is not displayed, press UTILITY , then, then to view the Windows Taskbar menu atthe bottom of the display.5. On the Windows Taskbar menu, click Start then point to Programs,National Instruments NI-488.2, and then click Explore GPIB to open theMeasurement & Automation window.6. On the left side of the Measurement & Automation window under folders:a. Click the plus sign to expand the Measurement & Automationfolder.b. Click the plus sign to expand the Devices and Interfaces folder.c. Right click GPIB0 (AT-GPIB/TNT) to open a submenu.7. On the submenu, click Scan for Instruments to run the test.8. The state of all the peripherals found on the bus is returned.9. If problems are detected, check the connections of all GPIB cables, andcheck all the GPIB addresses of the instruments on the bus.Troubleshooting Systems with ControllersPassing the preceding test indicates that the analyzer's peripheral functionsare operating normally. Therefore, if the analyzer has not been operatingproperly 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 youranalyzer.)LAN TroubleshootingProblems with the Local Area Network (LAN) can be difficult to solve. Softwareand protocol problems can make it difficult to determine whether theanalyzer's hardware is working properly, or if there is a problem with the LAN orcabling.SystemConfigure Control Panel...Address Information— Each device must have its own unique address.— The network analyzer’s default GPIB address in the controller mode is21.— The address set on each device must match the one recognized by theanalyzer (and displayed).Refer to the manual of the peripheral to read or change its address.
