xx
PWS2000 Series
Linear DC Power Supplies
ZZZ
Declassification and Security
Instructions
www.tektronix.com
P077063900*
*
077-0639-00
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or suppliers, and are protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication
supersedes that in all previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 5 0 0
Beaverto
USA
For product information, sales, service, and technical support:
n, OR 97077
In North America, call 1-800-833-9200.
Worl dwid e, visi t www.tektronix.com to find contacts in your area.
Table of Contents
Preface .............................................................................................................. iii
Clear and Sanitize Procedures. . ..... . ..... . .... . . .... . ..... . ..... . ..... . ..... ..... . ..... . ..... . ..... . ... . . . .... . .. 1
Memory Devices............................................................................................... 1
Troublesho
How to Clear or Sanitize a Nonfunctional Instrument. ..... . ..... . ..... . ..... . ..... . ... . . ..... . ..... . ..... 3
How to Recover from Sanitizing the Nonvolatile Memory of the Instrument .... . ..... . .... . . .... . .... 3
oting..................................................................................................... 3
PWS2000 Series Declassification and Security Instructions i
Table of Contents
ii PWS2000 Series Declassification and Security Instructions
Preface
This document helps customers with data security concerns to clear or sanitize
existing memory devices in the PWS2000 Series Linear DC Power Supplies and
to declassif
y instruments that are not functioning.
Products
The following Tektronix products are covered by this document:
PWS2185
PWS2323
PWS2326
PWS2721
Related Documents
The following table lists the documentation that is available for these products and
shows where you can find it: in a printed manual, on the product documentation
CD-ROM, or on the Tektronix Web site.
Table i: Product documentation
Item Purpose Location
User Manual Provides operation and application
information. This manual is available
in English, Spanish, French, German,
Portuguese, Italian, Russian, Korean,
Simplified Chinese, and Traditional
Chinese.
Specifications and Performance
Verification Technical Reference
Specifications and procedures for
checking instrument performance.
Product Documentation CD and available at
www.tektronix.com/manuals
Product Documentation CD and available at
www.tektronix.com/manuals
Terms
The following terms may be used in this document:
Clear. This removes d ata on media/memory before reusing it in a secured
area. All reusable memory is cleared to deny access to previously stored
information by standard means of access.
Erase. This is equivalent to clear.
Media storage/data export device. Any of s everal devices that can be used
to store or export data from the instrument, such as a USB port.
Nonvolatile memory. Data is retained when the instrument is powered off.
Power off. Some instruments have a “Standby” mode, in which power is
still supplied to the instrument. For the purpose of clearing data, putting the
instrument in Standby mode does not qualify as powering off. For these
products, you will need to either pressarear-panelOFFswitchorremovethe
power source from the instrument.
PWS2000 Series Declassification and Security Instructions iii
Preface
Remove. This is
device from the instrument. Instructions are available in the product Service
Manual.
Sanitize. This eradicates the data from media/memory so that the data cannot
be recovered by other means or technology. This is typically used when the
device will be moved (temporarily or permanently) from a secured area to a
non-secured area.
Scrub. This is equivalent to sanitize.
User-modifiable. The user can write to the memory device during normal
instrument operation, using the instrument interface or remote control.
Volatile memory. Data is lost when the instrument is powered off.
aphysicalmeanstoclearthedatabyremovingthememory
iv PWS2000 Series Declassification and Security Instructions
Clear and Sanitize Procedures
Memory Device
Table 1: Non
Type an d
minimum size Function
EEPROM, 256k x
8bit
STM32F103C98T6,
64k –128k Flash
C8051F350, 8k
Flash
Table 2
Type an
minimum size Function
STM32F103C98T6,
20k SRAM
C8051F350, 768b
SRAM
volatile memory devices
Current setup,
saved setups,
and calibration
constants
: Volatile memory devices
d
s
The following tables list nonvolatile and volatile memory devices. Detailed
procedures to sanitize or clear these devices are shown after the tables.
User
modifiable
Yes Fi rmware
No Firmware
No Firmware
User
modifiable
No Firmware
No Firmware
Data input
method Location To clear To sanitize
operations and
user input
update
update
put
Data in
method Location To clear To sanitize
operations
operations
Main board
Main board
Main board
Main board
Main board
Cycle power with
a minimum of 15
seconds off
Cycle power with
a minimum of 15
seconds off
See Clear
EEPROM
Procedure
following this
table
Clear Flash and EEPROM
edure
Proc
1. Press the front-panel Enter button.
2. Press the front-panel ESC button.
3. Press the front-panel 2 button.
Clear STM32F103C98T6
and C8051F350 Procedure
1. Press the front-panel power button to turn the instrument off.
2. Wa
it at least 15 seconds before turning the instrument back on.
PWS2000 Series Declassification and Security Instructions 1
Clear and Sanitize Procedures
2 PWS2000 Series Declassification and Security Instructions
Troubleshooting
How to Clear or Sanitize a Nonfunctional Instrument
To sanitize a nonfunctional instrument, remove the Main board and return the
instrument to Tektronix for repair or replacement.
How to Recover from Sanitizing the Nonvolatile Memory of the Instrument
After performing the Clear Flash and EEPROM Procedure, the power supply
will return to the factory default setting. Therefore, a recovery procedure is not
necessary.
PWS2000 Series Declassification and Security Instructions 3
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