Firmware Related Information; General Description; User Accessible Files; Operational Files - Keysight N9912A Service Manual

RF Analyzer
N9912A

Firmware Related Information

General Description

The analyzer is based on the Windows CE
to the desktop of general operating system functions is provided.
The file system for Windows CE is maintained in flash memory on the A6 SOM board. There is limited
access to the file system. Most memory is in protected region and not directly accessible by the user.
The user accessible memory is under UserData. See the "File Management" section of the FieldFox User's
Guide for instructions on saving, recalling, and managing files in the unprotected memory.

User Accessible Files

• Directory structure below UserData in the A6 SOM board flash memory (approximately 20 MB).
• External USB flash memory plugged in the analyzer.
• External SD memory card plugged into the analyzer.
NOTE: When copying files, a "Copy_...." directory is created at the root of the destination device as the
destination for the copied file(s). This characteristic generally makes it impossible to copy a file into the
desired directory under UserData in the A6 SOM board flash memory. This limits the usefulness of copying
files to or within UserData.

Operational Files

• Results from adjustments performed under TME (see
• File resulting from CAT/NA user calibration—not directly available to user.
• Cal kit definition files—stored in UserData\calkits.
• Cable definition files—stored in UserData\Cables.
• Error log—not directly available to user. See
information.

Erase User Data Utility

A utility to erase all directories and files in the UserData directory is available. After the flash memory is
erased, the boot process returns the UserData directories and files to the state as shipped from the factory.
The System Information screen indicates the time and date of the most recent erase.
See Chapter 8 for instructions on executing the Erase User data utility.

Error Log

See Chapter 8 for instructions on viewing the error log.
1. Windows" and Windows CE" are U.S. registered trademarks of Microsoft Corporation.
Service Guide N9912-90003
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operating system. This is a closed system; no direct user access
Chapter 3)—not directly available to user.
"Error Log" further on in this section for accessing error log
Theory of Operation
Firmware Related Information
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