1. Command to USB device returns error or invalid data: Check the connection to the USB device and try again.

2. Device not ready: Device being accessed is not ready or responding. Try to access again.

3. EEPROM corrupted: EEPROM device being accessed has been corrupted. Perform a Factory Reset under the Preset Menu and then cycle the instrument power. If the error message persists, call your Anritsu Service Center.

4. Encountered error in loading cable list. Default file restored: 
The cable list file has been corrupted and will not be loaded. The default file has been used.

5. Encountered error in loading keyboard settings. Default file restored: The onscreen keyboard file has been corrupted and will not be loaded. The default file has been used.

6. Encountered error in loading shortcut icon settings. Default file restored: The menu shortcut file has been corrupted and will not be loaded. The default file has been used.

7. Encountered error in restoring last setup. Default file restored: The last setup file has been corrupted and will not be loaded. The default file has been used.

8. Error executing remote command: The remote command sent to the instrument has generated an unexpected error. Perform a Factory Reset and then cycle the power to the instrument. If error message persists, call your Anritsu Service Center.

9. Error executing remote query command: The remote query command sent to the instrument has generated an unexpected error. Perform a Factory Reset and then cycle the power to the instrument. If error message persists, call your Anritsu Service Center.

10. Error occurred while zeroing. Please zero sensor without RF input: When zeroing a USB power sensor, the RF input connector of the sensor must not be connected to any source of RF power. If RF power is detected during the zeroing, then the calibration will fail and the zeroing will not be applied.

11. File cannot be recalled: File being recalled failed because the instrument model used when the file was saved does not match the current instrument model.

12. File missing: File being accessed cannot be found. The file has either been deleted or moved to a different location.

13. Forward relative not applicable: For the USB In‑line power sensor, relative readings do not apply when making forward measurements of CCDF.

14. Hardware driver failed to load: One of the hardware drivers required has not loaded correctly. Perform a Factory Reset and then cycle the power to the instrument. If error message persists, call your Anritsu Service Center.

15. Loading USB Sensor ... : The USB power sensor has been detected and a connection is being established to this sensor.

16. Model Mismatch: When recalling a setup file or measurement file, this message is displayed if the file being recalled was generated by an instrument that is not the same model as the one being used to recall the file.

17. PLL Lock failed: Phase Lock Loop hardware has failed to lock. Perform a Factory Reset and then cycle the power to the instrument. If error message persists, call your Anritsu Service Center.

18. Recalling File...Failed: An error was encountered while recalling the file. The recall process was aborted. Try again. If the error persists, then the file may be corrupted.

19. Reverse relative not applicable: For the USB In‑line power sensor, relative readings do not apply when making reverse measurements of Reflection Coefficient, Return Loss, or VSWR.

20. Saving File…Failed: An error was encountered while saving the file. The save process was aborted. Check that the destination location is accessible and try again. If the problem persists, then the current setup may have corrupted parameters or data. Preset the instrument and try saving the file again.

21. USB drive missing. Please connect one to either USB port: 
No USB flash drive was found while copying log files. Check that the USB drive is installed correctly and try again.

22. Verifying easyTest File ... : When an easyTest file is first opened, a check is performed to ensure that the file is compatible with the instrument and that the file is not corrupted. After the verification passes the file is recalled. If it fails, then a message box is displayed with more specific information about the failure.

23. Zero Sensor completed: The zeroing function performed on the attached USB power sensor has been completed.