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RF Vector Network Analyzer
N9923AN
Firmware Related Information
General Description
The analyzer is based on the Windows CE
direct user access 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
N9923AN FieldFox RF Vector Network Analyzer User's Guide (Part Number N9923-90006)
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
to user.
• 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
accessing error log 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.
1. Windows® and Windows CE® are U.S. registered trademarks of Microsoft Corporation.
Service Guide N9923-90005
1
operating system. This is a closed system; no
Chapter
"Error Log"
further on in this section for
Theory of Operation
Firmware Related Information
3)—not directly available
5-23
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Table of Contents
Troubleshooting
