General Information 1-16 Secure Environment Workplace
MS20xxB UG PN: 10580-00301 Rev. D 1-11
1-16 Secure Environment Workplace
This section describes the types of memory in the VNA Master, how to delete stored user files
in internal memory, and recommended usage in a secure environment workplace.
VNA Master Memory Types
The instrument contains non-volatile disk-on-a-chip memory, EEPROM, and volatile DRAM
memory. The instrument does not have a hard disk drive or any other type of volatile or
non-volatile memory.
Disk-On-A-Chip (DOC)
DOC is used for storage of instrument firmware, factory calibration information, user
measurements, setups, and *.jpg screen images. User information stored on the DOC is
erased by the master reset process described in section “Erase All User Files in Internal
Memory” on this page.
EEPROM
This memory stores the model number, serial number, and calibration data for the
instrument. Also stored here are the user-set operating parameters such as frequency range.
During the master reset process, all operating parameters that are stored in the EEPROM
are set to standard factory default values.
RAM Memory
This is volatile memory used to store parameters needed for the normal operation of the
instrument along with current measurements. This memory is reset whenever the
instrument is restarted.
External USB Flash Drive (not included with the instrument)
This memory may be selected as the destination for saved measurements and setups for the
instrument. You can also copy the contents of the internal disk-on-chip memory to the
external flash memory for storage or data transfer. The external Flash USB can be
reformatted or sanitized using software on a PC.
Refer to the Chapter 4, “File Management” for additional information on saving and copying
files to the USB flash drive.
Erase All User Files in Internal Memory
Perform a Master Reset:
1. Turn the instrument on.
2. Press the Shift button then the System (8) button.
3. Press the System Options soft key (submenu key).
4. Press the Reset key, then the Master Reset key.
5. A dialog box is displayed on the screen warning that all settings will be returned to
factory default values and all user files will be deleted. This deletion is a standard file
delete and does not involve overwriting exiting information.
6. Press the ENTER button to complete the master reset.
7. The instrument reboots, and the reset is complete.