Tektronix WFM4000 Series Manual de usuario

WFM4000 and WFM5000 Waveform Monitors

Declassiﬁcation and Security

ZZZ

Instructions

www.tektronix.com

071-2443-00

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Contacting Tektronix

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Table of Contents

Preface.............................................................................................................. iii

Clear and Sanitize Procedures...................... .............. .............. ................................ ... 1

Memory Devices............................................................................................... 1

Data Export Devices........................................................................................... 5

Troubleshooting..................................................................................................... 7

How to Clear or Sanitize a Non-Functional Instrument .............. .......... .............. ............. 7

How to Recover from Clearing or Removing Memory from the Instrument ........................... 7

WFM4000 and WFM5000 Declassiﬁcation and Security i

Table of Contents

ii WFM4000 and WFM5000 Declassiﬁcation and Security

Preface

The instructions in this document describe how to clear or sanitize the data

storage (memory) devices and disable the data output devices (USB ports) in

the products listed below. The instructions also describe how to declassify an

instrument that is not functioning. These procedures can be useful for customers

with data security concerns.

Products The following Tektronix products are covered by this document:

WFM4000

WFM5000

Related Documents WFM4000 and WFM5000 Waveform Monitors Service Manual

Terms The following terms may be used in this document:

Clear. This removes 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. Any of several 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 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

instrument in Standby mode does not qualify as powering off. For these

products, you will need to either pressarear-panelOFFswitchorremovethe

power source from the instrument.

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.

Sanitize. This eradicates the data from media/memory so that the data 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. This is equivalent to sanitize.

User-modiﬁable. The user can write to the memory device during normal

instrument operation, using the instrument interface or remote control.

Volatile memory. Data is lost when the instrument is powered off.

WFM4000 and WFM5000 Declassiﬁcation and Security iii

Preface

iv WFM4000 and WFM5000 Declassiﬁcation and Security

Clear and Sanitize Procedures

Memory Devices

The following tables list the volatile and nonvolatile memory devices. Detailed

procedures to clear or sanitize these devices, if any, are shown following each

table.

Table 1: Volatile Memory Devices

Type and

minimum size Function

User

modiﬁable1

Data input

method Location To clear To sanitize

SRAM 256 K X 16PLD RAM No PLD access Main board None Remove the power

source from the

instrument for at

least 20 seconds

FPGA 1.9 Mb Mapper#1 No Programmed

by onboard

ﬂash memory

Main board None Remove the power

source from the

instrument for at

least 20 seconds

SRAM 512 K X 18 Mapper#1 RAM No Static

memory

for mapper

FPGA

Main board None Remove the power

source from the

instrument for at

least 20 seconds

SDRAM 16 M X 16 Mapper#1 RAM

FPGA

Yes User can

initiate

capture to this

memory

Main boardNone Remove the power

source from the

instrument for at

least 20 seconds

FPGA 1.9 Mb Rasterizer No Programmed

by onboard

ﬂash memory

Main board None Remove the power

source from the

instrument for at

least 20 seconds

SDRAM 16 MX16 Rasterizer

SDRAM

Yes User can

initiate

capture to this

memory

Main board None Remove the power

source from the

instrument for at

least 20 seconds

SDRAM 16 M X 16 CPU RAM No CPU access Main board None Remove the power

source from the

instrument for at

least 20 seconds

1During normal instrument operation.

WFM4000 and WFM5000 Declassiﬁcation and Security 1

Clear and Sanitize Procedures

Table 2: Nonvolatile Memory Devices

Type and

minimum size Function

User

modiﬁable1

Data input

method Location To clear To sanitize

Flash Memory

512 M X 16

Loads FPGAs on

power up

Contains

instrument SW,

network access

parameters, and

user-deﬁned

presets

Yes Programmed

by software

during software

upgrade

Main board See Clear Presets

procedure and Clear

IP and SNMP Address

Fields Procedure

See Clear

Presets

procedure and

Clear IP and

SNMP Address

Fields Procedure

Real Time Clock

and NVRAM

Stores time

set by user

and instrument

conﬁguration

settings

Yes UI Main board Set to GMT Set to GMT

PLD 8 Kb Display controller No Programmed by

ﬂash memory

during power

Main board None None

EEPOT 256 X 1

Serial I2C

Backlight

brightness

Yes UI Backplane board Set backlight

brightness to 100%

Set backlight

brightness to

100%

EEPOT 256 X 1

Serial I2C

Battery volts low

Battery voltage

error

No Factory/Service

calibration

procedure

Backplane board None None

1During normal instrument operation.

2 WFM4000 and WFM5000 Declassiﬁcation and Security

Clear and Sanitize Procedures

Clear Presets Procedure 1. Restore the instrument settings to the factory defaults as follows:

a. Press and hold the PRESET button to display the preset menu.

b. Select Recall Preset >Recall Factory Preset.

c. Press the SEL button.

2. Overwrite all saved presets with the factory default as follows:

a. Press and hold the PRESET button.

b. Select Save Preset >Select Group A.

c. Selectapresetthatisnotempty“<e>”.

d. Press the SEL button to overwrite that preset with the factory defaults.

e. Repeat for all presets in Group A that are not empty.

f. Repeat for all groups.

3. Rename all named groups and presets as follows:

a. Navigate to the top level menu.

b. Select Rename Preset >Select Group A.

c. Selectapresetthatisnotempty“<e>”.

d. Press the SEL button to overwrite that preset with the factory defaults.

e. Repeat for all presets in Group A that are not empty.

f. Repeat for all groups.

4. Press the PRESET button the exit the Preset menu.

Clear Diagnostic Log

Procedure

1. Press the CONFIG button.

2. Select Utilities >View Diagnostic Log.

3. Press the SEL button to display the log.

4. Clear the log as follows:

a. Press the >button until the box by “Erase Log” is highlighted.

b. Press the SEL button to remove all entries in the diagnostic log.

c. Press the >button until the box by “Exit” is highlighted.

d. Press the SEL button to exit the log display.

5. Press the CONFIG buttontoexittheconﬁguration menu.

WFM4000 and WFM5000 Declassiﬁcation and Security 3

Clear and Sanitize Procedures

Clear IP and SNMP

Address Fields Procedure

1. Press the CONFIGbutton.

2. Select Network Settings.

3. Select IP ConﬁgModeand set it to Manual to display the IP address.

4. Clear the IP address as follows:

a. Navigate to IP Address.

b. Press >to enter the edit mode.

c. Enter “000.000.000.000” for the IP address.

d. Repeat for the Subnet Mask, Gateway Address, and SNMP Trap Address

1throughSNM

P Trap Address 4.

5. Press the CONFIG buttontoexittheconﬁguration menu.

4 WFM4000 and WFM5000 Declassiﬁcation and Security

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