xx
PWS4000 Series
Linear DC Power Supplies
ZZZ
Declassification and Security
Instructions
www.tektronix.com
P077064000*
*
077-0640-00
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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
Data Export
Troubleshooting..................................................................................................... 3
How to Clear or Sanitize a Nonfunctional Instrument. ..... . ..... . ..... . ..... . ..... . ... . . ..... . ..... . ..... 3
How to Recover from Sanitizing the Nonvolatile Memory of the Instrument .... . ..... . .... . . .... . .... 3
Device............................................................................................ 2
PWS4000 Series Declassification and Security Instructions i
Table of Contents
ii PWS4000 Series Declassification and Security Instructions
Preface
This document helps customers with data security concerns to sanitize or remove
memory devices from the PWS4000 Series Linear DC Power Supplies.
These products have data storage (memory) devices and a data output device
(USB port). These instructions tell how to clear or sanitize the memory devices
and disable
the data output de vice. The instructions also tell how to declassify
an instrument that is not functioning.
Products
The following Tektronix product is covered by this document:
PWS4205
PWS4305
PWS4323
PWS4602
1
Related Documents
PWS472
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
OM, or on the Tektronix Web site.
CD-R
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
Programmer Manual
Specifications and procedures for
checking instrument performance.
SCPI command reference for remotely
controlling the instrument.
Product Documentation CD and available at
www.tektronix.com/manuals
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.
PWS4000 Series Declassification and Security Instructions iii
Preface
Media storage/
to store or export data from the instrument, such as a USB port.
Nonvolatile m
Power off. Some instruments have a “Standby” mode, in which power is
still suppl
instrument in Standby mode does not qualify as powering off. For these
products, you will need to either press a rear-panel OFF switch or remove the
power source from the instrument.
Remove. Thisisaphysicalmeanstoclearthedatabyremovingthememory
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
cured area.
non-se
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.
data export device. Any of several devices that can be used
emory. Data is retained when the instrument is powered off.
ied to the instrument. For the purpose of clearing data, putting the
iv PWS4000 Series Declassification and Security Instructions
Clear and Sanitize Procedures
Memory Device
s
The following tables list nonvolatile and volatile memory devices. Detailed
procedures to sanitize or clear these devices are shown after the tables.
Table 1: Non
Type an d
minimum size Function
EEPROM, 8k x 8
bit
Flash 8k x bit ListData Yes Firmware
AT91SAM7X256,
256k Flash
STM32F103C8,
64k – 128k Flash
2: Volatile memory devices
Table
volatile memory devices
User
modifiable
Current setup,
saved setups,
and calibration
constants
Yes Fi rmware
No Firmware
No Firmware
Data input
method Location To clear To sanitize
operations and
user input
operations and
user input
update
update
Main board
Main board
CPU board
Main board
See Clear Flash
and EEPROM
Procedure
following this
table
See Clear Flash
and EEPROM
Procedure
following this
table
nd
Type a
minimum size Function
AT91SAM7X256,
64k SRAM
STM32F103C8,
20k SRAM
Clear Flash and EEPROM
cedure
Pro
Clear STM32F103 and
AT91SAM Procedure
User
modifiable
No Firmware
No Firmware
nput
Data i
method Location To clear To sanitize
operations
operations
CPU board Cycle power with
Main board
a minimum of 15
seconds off
Cycle power with
a minimum of 15
seconds off
1. Press the front-panel Shift button.
2. Press the front-panel . button.
3. Press the front-panel 2 button.
1. Press the front-panel power button to turn the instrument off.
2. Wait at least 15 seconds before turning the instrument back on.
PWS4000 Series Declassification and Security Instructions 1
Clear and Sanitize Procedures
Data Export Device
Table 3: Data export devices
Type and
minimum
size Function
USB
device port
Supports re
and data transfer to a PC
mote control
The following table lists the data export device. There are no procedures to
disable this device.
User
modifiable Data input method Location To disable
Yes Remote control through
USBTMC
Rear-panel
instrument
of
Cannot be di
sabled
2 PWS4000 Series Declassification and Security Instructions
Troubleshooting
How to Clear or Sanitize a Nonfunctional Instrument
To sanitize a nonfunctional instrument, remove the Main and CPU boards and
return the instrument to Tektronix for installation of replacement boards.
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.
PWS4000 Series Declassification and Security Instructions 3
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