Tektronix S46-18 User manual

Keithley Instruments

Model S46-18, S46-26, and S46-40

28775 Aurora Road
Cleveland, Ohio 44139
1-800-833-9200

tek.com/keithley

Declassification and Security Instructions

Letter of Volatility

If you have data security concerns, this document tells you how to clear or sanitize the Model S46 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. You can also call the Tektronix corporate headquarters
(toll-free inside the U.S. and Canada only) at 1-800-833-9200. For worldwide contact numbers, visit

tek.com/contact-us

.

Products

This document contains procedures for the following models:

 S46-18 18-GHz Unterminated RF Switch System

 S46-26 26.5-GHz Unterminated RF Switch System

 S46-40 40-GHz Unterminated RF Switch System

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Model S46-18, S46-26, and S46-40 Declassification and Security Instructions

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 applications 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

the data directly.

 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.

Description of memory

All S46 Unterminated RF Switch Systems share common volatile and nonvolatile memory components. These
instructions will work for all of the instruments listed in Products (on page 1

All S46 Unterminated RF Switch Systems contain the following volatile and nonvolatile memory:

FRAM (U4): Nonvolatile memory

SRAM (U11): Volatile memory

Flash Memory (U12): Nonvolatile memory

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