Tektronix THS3014 Installation and maintenance instructions

THS3000 Series Oscilloscopes
Declassification and Security
ZZZ
Instructions
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Clear and Sanitize Procedures
If you have data security concerns, this document helps you to sanitize memory
devices in the THS3000 Series Oscilloscopes.
If you have any questions, contact the Tektronix Technical Support Center at
http://www.tektronix.com/support.
Products
The following Tektronix products are covered by this document:
THS3014
THS3024
Terms
The following terms may be used in this document:
Clear. This eradicates data 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. A device that is used to store or export
data from the instrument, such as a USB port/USB flash drive.
Sanitize. This removes the data from media/memory so that the data cannot
be recovered using any known technology. This is typically used when the
device will be moved (temporarily or permanently) from a secured area to a
nonsecured area.
Scrub. This is equivalent to sanitize.
Remove. This is a physical means to clear the data by removing the memory
device from the instrument. Instructions are available in the product service
manual.
User Accessible. User is able to directly retrieve the memory device contents.
User-Modifiable. The memory device can be written to by the user during
normal instrument operation, using the instrument user interface or remote
control.
Volatile memory. Data is lost when the instrument is powered off.
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
THS3000 Series Oscilloscopes Declassification and Security Instructions 1

Clear and Sanitize Procedures
instrument in Standby mode does not qualify as powering off. For these
products, you must either press a rear-panel OFF switch or remove the power
source from the instrument.
Instrument Declassification. A term that refers to procedures that must be
undertaken before an instrument can be removed from a secure environment.
Declassification procedures include memory sanitization and memory
removal, and sometimes both.
Memory Devices
The following table lists the volatile and nonvolatile memory devices in the
oscilloscopes.
Table 1: Memory Devices
Reference
designator Description Use
D4000 Controller “Spider” Contains a mask ROM 4k x 32 with a initial program with the operating
code for the oscilloscope and a RAM 1k x 32 to temporarily store stack
values for computing actions.
D4001 1x4MbSRAM.SRAMmemory Used to store the actual screen and oscilloscope setup, and saved screens
and oscilloscope setups.
D5000, D5002 2 x 32 Mb Flash EEPROM Non-volatile memory used to store operating code (oscilloscope firmware)
for the product, and to store calibration constants.
D5001, D5003 2 x 8 Mb SRAM SRAM memory used to store the actual screen and oscilloscope setup,
and saved screens and oscilloscope setups.
Memory Erasure
The operating code (instrument firmware)storedinD5000andD5002canbe
read and loaded using dedicated remote interface commands only available for
internal use by Tektronix.
Calibration constants stored in D5000 and D5002 can be read using special remote
interface commands only available for internal use by Tektronix. The calibration
constants are generated when the oscilloscope is sent through its calibration
process and are fundamental to the oscilloscope operation.
The saved screens and oscilloscope setups can be cleared from the oscilloscope by
using the following procedure:
1. Press the Save button.
2. Press F4 – FILE OPTIONS.
3. Select DELETE with the up/down arrow keys.
4. Press the Enter button.
2 THS3000 Series Oscilloscopes Declassification and Security Instructions

Clear and Sanitize Procedures
5. Press F2 – SELECTALL.
6. Press the Enter button.
7. Press F4 – YES to confirm the Clear action.
To clear all data stored in SRAM, disconnect the oscilloscope from all voltage
sources, open the battery door at the rear panel, and lift the battery out of the
instrument. Replace the battery after 10 minutes.
THS3000 Series Oscilloscopes Declassification and Security Instructions 3