Rear Panel Troubleshooting; Checking The Usb Ports; Checking The Controller Port - Keysight N5224A Service Manual

PNA Series Microwave Network Analyzers
N5224A and N5225A

Rear Panel Troubleshooting

Each rear panel connector is associated with a hardware group in the analyzer. You can use the data at these
rear panel connectors to help troubleshoot these hardware groups in addition to testing the connectors.
The connectors discussed in this section are:
• USB x 4
• Monitor (VGA)
• GPIB (0) CONTROLLER
• GPIB (1) TALKER/LISTENER
• LAN

Checking the USB Ports

To verify proper operation of any rear panel USB port:
• Connect a known good USB device, such as a USB mouse.
• Wait 15 seconds for the analyzer to verify the device connection, and then check the operation of the
USB device.
• If the device performs correctly, the USB port is functioning properly.
• If the device does not perform correctly, remove the non-working USB device, wait 15 seconds, and then
reconnect the device to the rear panel USB port.
• If the USB device still does not work and has been verified to work elsewhere, then the A21 CPU board is
faulty. Refer to "Removing and Replacing the A21 CPU Board Assembly" on page

Checking the CONTROLLER Port

The network analyzer uses a National Instruments 488.2 GPIB controller and associated driver software.
This software includes a test utility that scans the GPIB bus and returns the status of all the connected
peripherals.
To run the test utility software and check the GPIB status:
1. Connect a known good peripheral to the analyzer using a known good GPIB cable.
2. Press UTILITY System
displayed.
3. In the block, click
GPIB
configure, and then click
4. If the Window Desktop is not displayed, press UTILITY
Control Panel...
to view the
5. On the
Windows Taskbar
click to open the
Explore GPIB
Service Guide N5225-90001
, then Configure , then
to establish the analyzer as a controller. Wait for the analyzer to
System Controller
.
OK
Windows Taskbar
menu, click then point to
Start
Measurement & Automation
SICL/GPIB... . A
SICL/GPIB/SCPI
Configure
System , then
menu at the bottom of the display.
Programs, National Instruments NI-488.2,
window.
Troubleshooting
Rear Panel Troubleshooting
7-22.
dialog box is
, then
and then
4-17