Rear Panel Troubleshooting; Checking The Usb Ports; Checking The Controller Port - Keysight Technologies N5221A Service Manual

Troubleshooting

Rear Panel Troubleshooting

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:
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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
— If the device performs correctly, the USB port is functioning properly.
— If the device does not perform correctly, remove the non-working USB
— If the USB device still does not work and has been verified to work

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
2. Press UTILITY
3. In the GPIB block, click System Controller to establish the analyzer as a
Keysight N5221A/22A Service Guide
USB x 4
Monitor (VGA)
GPIB (0) CONTROLLER
GPIB (1) TALKER/LISTENER
LAN
check the operation of the USB device.
device, wait 15 seconds, and then reconnect the device to the rear panel
USB port.
elsewhere, then the A17 CPU board is faulty. Refer to
Replacing the A17 CPU Board Assembly" on page
GPIB cable.
System
SICL/GPIB/SCPI dialog box is displayed.
controller. Wait for the analyzer to configure, and then click OK.
, then , then
Configure
"Removing and
7-25.
. A
SICL/GPIB...
4-21