128 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Troubleshooting
Communication Issues
3. Verify that the instrument IP address is set to the same address that the
PC trying to communicate with it is using by pressing Utility, I/O Config,
LAN Setup.
4. Verify that the PC attempting to communicate with the instrument can
identify it using the Keysight Connection Expert.
5. Verify that the ethernet connector on the rear panel of the instrument is
not damaged. If damaged, replace the A3 RF assembly.
6. If the problem persists after the preceding steps have all been taken
replace the A5 CPU assembly.
7. If the problem persists after replacing the A5 CPU assembly replace the A3
RF assembly.
USB
The instrument can be controlled via USB, can access USB flash memory
devices, and can control USB power sensors. All ports are USB 2.0.
Instrument Control (Device Side)
The instrument can be controlled by an external device using the rear panel
USB 2.0 Type-B control port. The functionality of this can be verified with a PC
running the Keysight Connection Expert and IO Libraries. When connected to
the instrument the Connection Expert should recognize and identify the
instrument. If it doesn’t recognize the device try the following in the order listed
to isolate the problem:
1. Try using a known good certified USB 2.0 cable connected from the PC
USB port to the instrument rear panel USB Type-B control port.
2. Verify that the PC can communicate with another USB controllable
instrument.
3. If the problem persists after the preceding steps have all been taken
replace the A5 CPU assembly.
4. If the problem persists after replacing the A5 CPU assembly replace the A3
RF assembly.
External Device Control (Host Side)
Using either the front or rear panel USB 2.0 Type-A ports the instrument can
access USB flash memory devices and control Keysight USB power sensors.
However, not all flash memory devices are compatible.
USB flash devices used with these instruments must be formatted with a FAT
file system, they cannot be NTFS. FAT32 or exFAT are the preferred file systems.
If a USB port does not recognize a supported device the easiest way to
troubleshoot a USB problem is with a supported FAT formatted USB flash
memory device. Use the following steps in the order listed to isolate the
problem:
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