Tektronix Series 2268 850-Watt Power Supplies Security,Declassification Instructions Declassification and Security Instructions
Series 2268 Power Supplies
Keithley Instruments
28775 Aurora Road
Cleveland, Ohio 44139
1-800-935-5595
http://www.keithley.com
Declassification and Security Instructions
Introduction
If you have data security concerns, this document tells you how to clear or sanitize Series 2268 850-Watt DC
Power Supply memory devices. It also explains how to declassify an instrument that is not functioning.
The procedures in this document are written to meet the requirements specified in:
• NISPOM, DoD 5220.22-M, chapter 8
• ISFO Process Manual for Certification and Accreditation of Classified Systems under NISPOM
Contact information
If you have any questions after you revie w the information in this documentation, please contact your local
Keithley Instruments office, sales partner, or distributor, or call Keithley Instruments corporate headquarters
(toll-free inside the U.S. and Canada only) at 1-800-935-5595, or from outside the U.S. at +1-440-248-0400. For
worldwide contact numbers, visit the Keithl e y Instruments website (http://www.keithley.com).
Products
This document contains procedures for the following Keithley Instruments models:
• 2268-20-42
• 2268-40-21
• 2268-60-14
• 2268-80-10
• 2268-100-8
• 2268-150-5
Terminology
The following terms may be used in this document:
• Clear: Removes data on media or in memory before reusing it in a secured area. Clears all reusable memory
to deny access to previously unsecured information.
• Demo setups: Demonstration modules that come loaded on the instrument; you cannot modify them.
• Direct method of modification: You can modify data directly.
• Erase: Equivalent to clear (see above).
• Indirect method of modification: The instrument system resources modify the data; you cannot modify it.
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Series 2268 Power Supplies Declassification and Security Instructions
• Instrument declassification: Procedures that must be completed before an instrument can be removed
from a secure environment. Declassification procedures include memory sanitization and memory removal.
• Media storage and data export device: 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 power is turned off.
• Protected user data area: Contains data that is protected by a password.
• Remove: Clears instrument data by physically removing the memory device from the instrument.
• Sanitize: Eradicates instrument data from media and memory so it 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 nonsecured area.
• Scrub: Directly retrieve and clear the contents of the memory device.
• User accessible: You can directly retrieve the contents of the memory device.
• User data: Measurement data that represents signals that you connect to the instrument.
• User-modifiable: You can write to the memory device during normal instrument operation using the
front-panel interface or remote control.
• User settings: Instrument settings that you can change.
• Volatile memory: Temporary memory; data is lost when the instrument is turned off.
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Series 2268 Power Supplies Declassification and Security Instructions
chip)
PCF8570T/F5
Temporary storage
operation
No
None
processor)
Main board
Turn instrument
Turn instrument
A44 32 KB SRAM
Temporary memory
No
None
GPIB board
Turn instrument
Turn instrument
operation
Lantronix XPORT
Temporary storage
Not in
None (internal
Ethernet
Turn instrument
Turn instrument
Memory devices
The following tables list the volatile and nonvolatile memory devices in the standard instrument and listed options.
Volatile memory devices
The following table lists Ser ies 2268 volatile memory dev ices and relev ant memory-rel ated inform ation. If the table i ndicate s that
a device can be cleared or sanitized by the user, see the detailed instructions in Clear and sanitize procedures (on page 4).
Type and
minimum size
P89V51RD2FBC
1 kb static RAM
Function User
Temporary memory
used by the
microprocessor
controller for
internal processor
operations (on the
microprocessor
modifiable
No None Main board
Data input
method
Location To clear To sanitize
Turn instrument
power off
Turn instrument
power off
256 bit x 8 bytes of
static RAM
at U1
P89V51RD2
Processor with
1 KB RAM
XP1001000-03R
256 KB SRAM
of system variables
and data during
used by the
microprocessor
controller for
internal processor
operations (on the
GPIB board)
Temporary storage
of system variables
and data during
for LAN protocol
firmware
(communicates
only with the
No None GPIB board
normal use
communication
within LAN
chipset only)
board
power off
power off
Turn instrument
power off
power off
power off
power off
Turn instrument
power off
power off
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Series 2268 Power Supplies Declassification and Security Instructions
EEPROM
Contains
Yes1
Front-panel or
control
Main board
Perform a hard
Follow Clear
page 4)
P89V51RD2FBC
memory
Contains the
Not in
Firmware
Main board
Follow Clear
page 4)
Follow Clear
page 4)
P89V51RD2FBC
GPIB board)
Contains factory
Not in
Factory
GPIB board
Remove and
Remove and
Lantronix XPORT
Contains the
Not in
Reset to factory
Reset to factory
Lantronix XPORT
ROM
Contains the
Not in
Remove and
device
Remove and
device
1
Clearing the calibration data from memory will cause the instrument to operate outside of its specifications. You will have
(ttp://www.lantronix.com/).
Nonvolatile memor y devices
The following table lists Series 2268 no nv olati le m emory devices and relev ant memory-related information. If the table indicat e s
that a device can be cleared or sanitiz ed by th e user, see the detai led in str u cti ons in C le ar a nd s ani t ize procedures ( on page 4).
Type and
minimum size
Function User
modifiable
Data input
method
Location To clear To sanitize
25LC1/5N, 16 KB
Processor with
64 KB flash
Processor with
64 KB flash
memory and
calibration data
and user settings
instrument
firmware
data
normal use2
normal use3
remote
interface
update
or soft reset
and sanitize
procedures (on
destroy
110-0312-01-0
1 GPIB board
and sanitize
procedures (on
and sanitize
procedures (on
destroy
110-0312-01-0
4
1 GPIB board
secondary 8 KB
block of flash
memory (on
110-0312-01-01
Factory Ethernet board
XP1001000-03
device 512 KB
flash memory
operating system
for the ethernet
port and the LXI
web server
normal use
default through
the ethernet
port and
Lantronix
Device Installer
software
5
default through
the ethernet
port and
Lantronix
Device Installer
software
Factory Ethernet board
XP1001000-03
device 16 KB
to return the instrument to the factory to be recalibrated.
2
Writing to this memory is not recommended because overwriting t he flash memory will render the power supply
inoperative and you will have to return the instrument to the factory for repair.
3
Writing to this memory is not recommended because it requires specific actions that are not documented.
4
There is no user means to clear the flash memory or EEPROM on the 110-0312-01-01 board.
5
The Lantronix Device Installer software and instructions are available at http://www.lantronix.com/
boot program for
the device
normal use
destroy XPORT
XP1001000-03
destroy XPORT
XP1001000-03
Clear and sanitize procedures
If the memory device you want to clear or sanitize can be modified by users, you can use one of the following
procedures to do so.
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Series 2268 Power Supplies Declassification and Security Instructions
Front-panel procedure
To use a soft reset to restore defau lt parameter settings, but retain calibration data:
1. Turn off the power supply, and then turn it on again. When the instrument is powering on, 8888 8888 is visible
on the output voltage and current displays.
2. Press and hold both the OUTPUT ENABLE Main button and OUTPUT ENABLE Aux button for three
seconds. Π5ΥΣρΣ is displayed.
When the soft reset has been triggered, ΠΣΥΧΛρ is displayed for one second on the output voltage display,
and then the model number is displayed for one second before the instrument returns to normal mode. When
the soft reset is complete, the instrument settings are restored to their defaults (see the following table for
those settings). Existing calibration data is retained.
Default settings after a soft reset
Parameter Setting
Address 1
Data rate (Kbps) 9.6
Communication mode RS-232
Vout setting 0 V
Iout setting 0 A
Output Off
AUX out Off
Trigger Off
External on/off Polarity Negative
Autostart mode Off
AUX autostart mode Off
UVP 0 V
Foldback trigger None
Foldback delay 0.5 s
Current share mode CONTroller
Alarm output latches 263 (0 x 107, all latches enabled)
Alarms mask 2047 (0 x 7FF, all enabled)
Interlock Disabled
Voltage analog programming Off
Voltage APG scale 10 V
Current analog programming Off
Current APG scale 10 V
Voltage output protection Off
Current output protection Off
Voltage output enable protection Off
Current output enable protection Off
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Series 2268 Power Supplies Declassification and Security Instructions
Remote command procedure
To clear or sanitize a memory device using remote commands over a remote interface, send one of the following
commands:
*RST
[:]SYStem[<channel>]:RESet
The reset command does the following:
• Sets device-specific functions to factory default settings
• Forces the device into the OCIS and OQIS states (see IEEE Std 488.2, sections 12.5.2 a nd 12.5.3
respectively)
The reset command does not affect the follo wing:
• The state of the IEEE-488.1 interface
• The state of the IEEE-488.1 device address
• The output queue
• The Standard Status Register Enable setting
• The Standard Event Status Enable (SESR) setting
• The Operation and Questionable SCPI status registers and their fanout registers
• Calibration data that affects device specifications
• The Protected User Data query response
Clear or sanitize a nonfuncti ona l instrument
To sanitize a nonfunctional instrument, remove the main and CPU boards and return the instrument to Keithley
Instruments for installation of replacement boards.
6 077108200 / October 2014
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