Tektronix 3760 Declassification

Model 3760, 3761, 3762, and 3765

Keithley Instruments

28775 Aurora Road
Cleveland, Ohio 44139
1-800-935-5595

http://www.tek.com/keithley

Declassification and Security Instructions

Introduction

If you have data security concerns, this document tells you how to clear or sanitize the Model 3760, 3761,
3762, and 3765 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 review 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 [phone].
For worldwide contact numbers, visit the Keithley Instruments website

(http://www.tektronix.com/keithley).

Products

This document contains procedures for the following Keithley Instruments models:

• 3760 10-channel High Current Multiplexer Card

• 3761 10-channel Low Current Multiplexer Card

• 3762 10-channel High Voltage Multiplexer Card

• 3765 Hall Effect Card

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.

• 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.

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Model 3760, 3761, 3762, and 3765 Declassification and Security Instructions

• 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 non-secured 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.

Description of memory

All Model 3760, 3761, 3762, and 3765 instruments share common volatile and nonvolatile memory
components. These instructions will work for all instruments listed in the Products

All Model 3760, 3761, 3762, and 3765 instruments contain the following volatile and nonvolatile memory:

FPGA (U2): Volatile memory of instrument logic

Flash Memory (U8): Nonvolatile memory of instrument logic

section above.

FRAM (U7): Nonvolatile memory of relay cycle counts and card data (e.g. serial number, model number)

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