ROHDE SCHWARZ RTE1000 Series RTE Digital Oscilloscope Instruction Manual

ROHDE SCHWARZ RTE1000 Series RTE Digital Oscilloscope Instruction Manual

Overview

Securing important information is crucial in many applications.

Generally, highly secured environments do not allow any test equipment to leave the area unless it can be proven that no user information leaves with the test equipment, e.g. to be calibrated. “Regarding sanitization, the principal concern is ensuring that data is not unintentionally released” [1].

This document provides a statement regarding the volatility of the memory types used and specifies the steps required to sanitize an instrument.

The procedures in this document follow “NIST Special Publication 800-88: Guidelines for Media Sanitization” [1].

In addition, recommendations are provided to safeguard information on the R&S RTE.

References

See the following literature for further information.

1. Kissel Richard L. [et al.] Guidelines for Media Sanitization = Special Publication (NIST SP) = NIST SP – 800-88 Rev 1. – Gaithersburg : [s.n.], December 17, 2014.
2. National Industrial Security Program Authorization Office Defense Security Service (DSS) Assessment and Authorization Process Manual (DAAPM). – May 6, 2019.
3. ACSC Australian Cyber Security Centre Australian Government Information Security Manual, January 2020.

Instrument Models Covered

Table 2-1: Digital Oscilloscope models

Security terms and definitions

Terms defined in Guidelines for Media Sanitization

NIST Special Publication 800-88 [1]

• Sanitization
  “Media sanitization refers to a process that renders access to target data on the media infeasible for a given level of effort.”

• Clear
  “Clear applies logical techniques to sanitize data in all user-addressable storage locations for protection against simple non-invasive data recovery techniques; typically applied through the standard Read and Write commands to the storage device, such as by rewriting with a new value or using a menu option to reset the device to the factory state (where rewriting is not supported).”

• Purge
  “Purge applies physical or logical techniques that render Target Data recovery infeasible using state of the art laboratory techniques.”

• Destroy
  “Destroy renders Target Data recovery infeasible using state of the art laboratory techniques and results in the subsequent inability to use the media for storage of data.”

Control of media

Another option is to keep physical media holding sensitive information within the classified area, see [1], paragraph 4.4.

Volatile memory

“Memory components that do not retain data after removal of all electrical power sources, and when reinserted into a similarly configured system, are considered volatile memory components.” [2]

The volatile memory in the instrument does not have battery backup. It loses its contents when power is removed from the instrument.

If the instrument is battery operated, e.g. handhelds, it retains data in the volatile memory as long as the battery is installed.

Typical examples are RAM, e.g. SDRAM.

Non-volatile memory

“Components that retain data when all power sources are discontinued are non- volatile memory components.” [2].

In the context of this document, non-volatile memory components are non-user accessible internal memory types, e.g. EEPROM, Flash, etc.

Media

Media are types of non-volatile memory components. Media are user accessible and retain data when you turn off power.

In the context of this document, media types are Hard Disk Drives (HDD), Solid State Drives (SSD), Memory Cards, e.g. SD, microSD, CFast, etc., USB removable media, e.g. Pen Drives, Memory Sticks, Thumb Drives, etc. and similar technologies.

Types of Memory and Information Storage in the R&S RTE

The Digital Oscilloscope contains various memory components.

The following table provides an overview of the memory components that are part of your instrument. For a detailed description regarding type, size, usage and location, refer to the subsequent sections.

Memory type| Size| Content| Volatility| User Data| Sanitization procedure
---|---|---|---|---|---
SDRAM/DDR3

(CPU board)

| 4 Gbyte| ●         Temporary information storage for operating sys- tem and instrument firm- ware

●         Waveform data

| Volatile| Yes| Turn off instru- ment power
SDRAM/DDR3

(main board)

| 256 Mbyte
SDRAM/DDR2

(main board)

| 1 Gbyte
EEPROM (board assembly)| 4 kbyte up

to 4 Mbyte

| ●         Hardware information:

–      Serial number

–      Product options

–      Calibration correc- tion data

●         BIOS

| Non-volatile| No| None required (no user data)
Flash (CPU board)| 18 Mbyte| Hardware information:

●         Serial number

●         Product options

●         Calibration correction data

| Non-volatile| No| None required (no user data)
SIM card| 318 kbyte| Hardware information:

●         Serial number

●         Product options

●         Calibration correction data

| Non-volatile| No| None required (no user data)
Hard Disk Drive

(HDD)

(removable)

or

Solid-State Drive

(SSD)

(removable)

| 500 Gbyte| ●         Operating system

●         Instrument firmware and firmware options

●         Instrument states and setups

●         Limit masks

●         Waveform data

●         Measurement results and screen images

| Non-volatile| Yes| Remove HDD

from instrument

or
Remove SDD from instrument
EEPROM (R&S RTE B1 and -B6)| Option R&S RTE-

B1: 128 Mbit

Option

R&S RTE-

B6: 256 Mbit

| ●         Component information

●         FPGA configuration

| Non-volatile| No| None required (no user data)
RAM/DDR3 (R&S RTE-B1)| 2 Gbit| ●         Waveform data| Volatile| Yes| Turn off instru- ment power
SDRAM/DDR2 (R&S RTE-B6)| 4 Gbit| ●         Waveform data| Volatile| Yes| Turn off instru- ment power

Volatile Memory

The volatile memory in the instrument loses its contents as soon as power is removed from the instrument. The volatile memory is not a security concern.

Removing power from this memory meets the memory sanitization requirements specified in the “Clearing and Sanitization Matrix” in Section 5.2.5.5.5 of the ISFO Process Manual for the Certification and Accreditation of Classified Systems under the NISPOM.

SDRAM/DDR3/DDR2

The R&S RTE has 4 Gbyte of SDRAM/DDR3 on the CPU board.
In addition, the main board is equipped with 1 Gbyte of SDRAM/DDR2 and with 256 Mbyte SDRAM/DDR3.

The SDRAM/DDR3 and SDRAM/DDR2 contain temporary information storage for operating system and instrument firmware as well as waveform data. They lose their memory as soon as power is removed.

Sanitization procedure: Turn off instrument power

RAM/DDR3 (option R &S RTE-B1)

The MSO option R&S RTE-B1 has one 2 Gbit DDR3 RAM. The DDR3 RAM contains waveform data. It loses its memory as soon as power is removed.
Sanitization procedure: Turn off instrument power

SDRAM/DDR2 (option R &S RTE-B6)

The waveform generator option R&S RTE-B6 has one 4 Gbit DDR2 SDRAM. The DDR2 SDRAM contains waveform data. It loses its memory as soon as power is removed.

Sanitization procedure: Turn off instrument power

Non-Volatile Memory

The R&S RTE contains various non-volatile memories. Out of these, only the removable Hard Disk Drive/Solid-State Drive (HDD/SSD) contains user data. The HDD/SSD can be physically removed from the R&S RTE and left in the secure area.

All non-volatile memories of the R&S RTE are not a security concern.

EEPROM

Each board assembly in the R&S RTE Digital Oscilloscope has one EEPROM device with a size of 4 kbyte up to 4 Mbyte. The EEPROM contains the BIOS and information related to the installed hardware, such as board serial number, product options and calibration correction data. The EEPROM does not hold user data nor can the user access the EEPROM storage.

Sanitization procedure: None required (no user data)

Flash

The CPU board of the R&S RTE Digital Oscilloscope has one 18 Mbyte Flash memory device. It contains configuration and version data. The Flash memory does not hold user data nor can the user access the Flash memory.

Sanitization procedure: None required (no user data)

SIM card

The R&S RTE is equipped with a SIM card. The SIM card has a memory of 318 kbyte.
It contains information about the R&S RTE, such as model, serial number and installed options. The SIM card does not hold user data nor can the user access the SIM card memory

Sanitization procedure: None required (no user data)

Hard Disk Drive (HDD)/Solid-State Drive (SSD)

The removable HDD/SSD is located on the rear of the R&S RTE. Its size depends on the model you have ordered.

The HDD/SSD is used to store:

• Operating system
• Instrument firmware and firmware options (measurement personalities) with option license keys
• Instrument states and setups
• Limit lines, limit masks
• Waveform data
• Measurement results and screen images

The HDD/SSD holds user data and is non-volatile. Hence, user data is not erased when power is removed from the instrument.

The removable HDD/SSD can be removed from the Digital Oscilloscope to make sure that no user data is stored within the Digital Oscilloscope. This can be done without opening the instrument.

The R&S RTE, equipped with the removable HDD/SSD, addresses the needs of customers working in highly sensitive areas.

Sanitization procedure: Remove HDD or SSD from instrument

EEPROM (options R &S RTE-B1 and R&S RTE-B6) 

The MSO option R&S RTE-B1 has one 128 Mbit EEPROM. The waveform generator option R&S RTE-B6 has one 256 Mbit EEPROM. Both EEPROMs contain information related to the installed hardware, such as component information and FPGA configuration. The EEPROMs do not hold user data nor can the user access the EEPROM storage.

Sanitization procedure: None required (no user data)

Instrument Declassification

Before you can remove the Digital Oscilloscope from a secured area (for example to perform service or calibration), all classified user data needs to be removed. You can declassify the Digital Oscilloscope as follows:

1. Turn off the Digital Oscilloscope and disconnect the power plug. This will sanitize the volatile memory.
2. To remove the HDD/SSD (containing user data), perform the following steps:
   a) Locate the HDD/SSD.
   
   Figure 5-1: Location of the R&S RTE HDD/SSD
   b) Unscrew the two knurled screws.
   c) Remove the HDD/SSD at the rear of the instrument.

Following these steps removes all user data from the Digital Oscilloscope. The Digital Oscilloscope can now leave the secured area.

These declassification procedures meet the needs of customers working in secured areas.

Once the R&S RTE is outside the secured area, installing a second non classified removable HDD/SSD (without any user data) allows the Digital Oscilloscope to function properly for service or other needs.

Prior to re-entering the secured area, the non-classified removable HDD/SSD (without the user data) is removed. When the R&S RTE is back within the secured area, the original classified removable HDD/SSD can be reinstalled.

• To hold classified user data in secure areas, use the removable HDD/SSD comes with the instrument.
• To hold non-classified user data in non-secure areas, use a second HDD/SSD (R&S RTE-B18/B19).

Validity of instrument calibration after declassification

The calibration makes sure that measurements comply to government standards.
Rohde & Schwarz recommends that you follow the calibration cycle suggested for your instrument.

The EEPROM is the only memory type used to hold permanent adjustment values required to maintain the validity of the R&S RTE’s calibration. Therefore, replacing one removable HDD/SSD with another, does not affect the validity of the instrument’s calibration.

After exchanging the removable HDD/SSD, perform a self-alignment once:

Note that the instrument has sufficient warm-up time before you perform the self-alignment.

1. From the “File” menu, select “Self Alignment”.
2. Tap “Start Alignment”.

Using the permanent and temporary values, the necessary adjustment information is then stored in the R&S RTE. Rohde & Schwarz recommends that you perform the selfalignment function once a week.

© 2021 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 – 0
Email: [email protected]
Internet: www.rohde-schwarz.com
Subject to change – data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.

Throughout this manual, products from Rohde & Schwarz are indicated without the ® symbol , e.g. R&S®RTE is indicated as R&S RTE.

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