Tektronix WFM6120 Installation and maintenance instructions

WFM6120, WFM7020, and WFM7120 Waveform Monitors
Declassification and Security
Instructions
www.tektronix.com
071-2295-00

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Table of Contents
Preface.............................................................................................................. iii
Clear and Sanitize Procedures............ .............. .............................................. ............. 1
Memory Devices............................................................................................... 1
Data Export Devices........................................................................................... 4
Troubleshooting..................................................................................................... 5
How to Clear or Sanitize a Non-Functional Instrument .............. .......... .............. ............. 5
How to Recover from Clearing or Removing the Instrument’s Memory................................ 5
WFM6120, WFM7020, and WFM7120 Declassification and Security i

Table of Contents
ii WFM6120, WFM7020, and WFM7120 Declassification and Security

Preface
This document helps customers with data security concerns to sanitize or remove
memory devices from the WFM6120, WFM7020, and WFM7120 Waveform
Monitors.
These products have data storage (memory) devices and data output devices (USB
ports). These instructions tell how to clear or sanitize the memory devices and
disable the data output devices. The instructions also tell how to declassify an
instrument that is not functioning.
Products The following Tektronix products are covered by this document:
WFM6120 (Options CPS, EYE, PHY, AD, BAS, PER, ALY, AVD, DAT)
WFM7020 (Options HD, CPS, AD, DL, BAS, PER, ALY)
WFM7120 (Options HD, CPS, EYE, PHY, AD, DDE, DL, SIM, BAS, PER,
ALY, AVD, DAT)
Related Documents WFM6120, WFM7020, and WFM7120 Waveform Monitor Service Manual
WFM6120, WFM7020, and WFM7120 Declassification and Security iii

Preface
Terms The following termsmaybeusedinthisdocument:
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 press a rear-panel OFF switch or remove the
power source from the instrument.
Remove. Thisisaphysicalmeanstoclearthedatabyremovingthememory
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.
iv WFM6120, WFM7020, and WFM7120 Declassification and Security

Clear and Sanitize Procedures
Memory Devices
The following tables list the volatile and nonvolatile memory devices in the
standard instrument and listed options. 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
FPGA 1.3 K Audio
measurement
No Programmed
by onboard
flash memory
Plugs into optional
Digital Audio board, IC8
on Dolby Audio board
None Remove the power
source from the
instrument for at
least 20 seconds
FPGA 920 Kb Audio
measurement
No Programmed
by onboard
serial
EEPROM
U521 on Audio 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
U652 on Main board None Remove the power
source from the
instrument for at
least 20 seconds
SRAM 512 K X18 Mapper#1 RAM No Static
memory
for mapper
FPGA
U742, U751 on 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
U752 on Main board None Remove the power
source from the
instrument for at
least 20 seconds
FPGA 1.9 Mb Mapper#2No Programmed
by onboard
flash memory
U631 on Main board None Remove the power
source from the
instrument for at
least 20 seconds
SRAM 512 K X 18 Mapper#2 RAM No Static
memory
for mapper
FPGA
U723, U743 on Main
board
None Remove the power
source from the
instrument for at
least 20 seconds
SDRAM 16 M X 16 SDRAM for
Mapper#2 FPGA
Yes User can
initiate
capture to this
memory
U731 on Main board None Remove the power
sourcefromthe
instrument for at
least 20 seconds
FPGA 1.9 Mb Rasterizer No Programmed
by onboard
flash memory
U641 on Main board None Remove the power
source from the
instrument for at
least 20 seconds
SDRAM 16 M X 16 Rasterizer
SDRAM
Yes User can
initiate
capturetothis
memory
U651, U661 on Main
board
None Remove the power
source from the
instrument for at
least 20 seconds
WFM6120, WFM7020, and WFM7120 Declassification and Security 1

Clear and Sanitize Procedures
Table 1: Volatile Memory Devices, (cont.)
Type and
minimum size Function
User
modifiable1
Data input
method Location To clear To sanitize
SDRAM 16 M X 16 CPU RAM No CPU access U422, U423, U521,
U522 on Main board
None Remove the power
source from the
instrument for at
least 20 seconds
SRAM 256 K X 16 PLD RAM No PLD access U511, U513, U512,
U514 on Main board
None Remove the power
source from the
instrument for at
least 20 seconds
1During normal instrument operation.
Table 2: Nonvolatile Memory Devices
Type and
minimum size Function
User
modifiable1
Data input
method Location To clear To sanitize
Flash Memory
4Mb
Audio
measurement
No Programmed
by software
during software
upgrade
Plugs into optional Digital
Audio board, IC9 on Dolby
Audio board
None Reload the
system software
per the loading
instructions
Serial EEPROM
256 X 8
Stores audio
calibration
coefficients
No Programmed
during
calibration
U421 on Analog Audio
board
Recalibrate Audio None
Serial EEPROM
256 X 8
Stores Eye
calibration
coefficients
No Programmed
during
calibration
U343 on Eye board Recalibrate Eye None
Serial EEPROM
256 X 8
Stores Composite
calibration
coefficients
No Programmed
during
calibration
U12 on Composite board Recalibrate Composite None
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
U311, U313 on Main
board
See
Clear Presets
Procedure and Clear
IP and SNMP Address
Fields Procedure
None
PLD 8 Kb Display controller No Programmed by
flash memory
during power
up
U413 on Main board None None
Real Time Clock Stores time set by
user
Yes UI U933 on Main board Set to GMT Set to GMT
Serial EPROM Diagnostic logs,
Main board Pix
Mon calibration,
and factory only
Looping diagnostic
mode control
No Programmed by
software during
calibration and
diagnostics
U445 on Main board See Clear Diagnostic
Log Procedure.
Recalibrate Pix mon
to overwrite existing
values.
None
2 WFM6120, WFM7020, and WFM7120 Declassification and Security

Clear and Sanitize Procedures
Table 2: Nonvolatile Memory Devices, (cont.)
Type and
minimum size Function
User
modifiable 1
Data input
method Location To clear To sanitize
Serial Flash Future expansion No Tested on
power up
Not used
U432 on Main board None None
Serial EEPROM MAC address No Set at factory U221 on Main board None None
1During normal instrument operation.
Clear Presets Procedure 1. Press and hold the PRESET button to display the preset configuration menu.
Then select Recall Preset >Factory Preset >SEL. This restores the presets
to the factory state.
2. Press and hold the PRESET button. Then select Save Preset >Select Group
A. For all presets that are not empty “<e>”, select Save and then press SEL
to overwrite that preset with the factory settings.
3. Check each group and overwrite presets that are not empty as described in
the previous step.
4. Navigate to the top level menu and select Rename Preset. Rename all named
groups and presets with the label “Default”.
Clear Diagnostic Log
Procedure
1. Press the CONFIG button. Then press Utilities >View Diagnostic Log.
Press SEL to display the log.
2. Press >until the box by “Erase Log” is highlighted. Then press SEL to
remove all entries in the diagnostic log.
3. Press >until the box by “Exit” is highlighted. Then press SEL to exit the
log display.
4. Press the CONFIG buttontoexittheconfiguration menu.
Clear IP and SNMP
Address Fields Procedure
1. Press the CONFIG button. Then select Network Settings.
2. Set IP ConfigModeto Manual to display the IP address.
3. Navigate toIP Address. Then press >to enter the edit mode. Enter
“000.000.000.000” for the IP address.
4. Repeat Step 3 for the Subnet Mask, Gateway Address, and SNMP Trap
Address 1 through SNMP Trap Address 4.
5. Press the CONFIG buttontoexittheconfiguration menu.
WFM6120, WFM7020, and WFM7120 Declassification and Security 3

Clear and Sanitize Procedures
Data Export Devices
The following table lists the data export devices in the standard instrument and
listed options. Detailed procedures to disable these devices, if any, are shown
following the table.
Table 3: Data Export Devices
Type and
minimum
size Function
User
modifiable 1Data input method Location To disable
Ethernet Communications Yes Standard Ethernet
protocol
Rear of instrument See Disable Ethernet Access Procedure
USB Data storage Yes Standard USB protocol Front of instrument None
1During normal instrument operation.
Disable Ethernet Access
Procedure
1. Press the CONFIG button. Then select Network Settings.
2. Navigate to the Web Enable and set it to Off.
3. Press the CONFIG buttontoexittheconfiguration menu.
Disable SNMP Access
Procedure
1. Press the CONFIG button. Then select Network Settings.
2. Navigate to the Web Enable and set it to Off.
3. Navigate to SNMP Enable and set it to Off.
4. Navigate to SNMP Trap Enable and set it to Off.
5. Press the CONFIG buttontoexittheconfiguration menu.
Enable Ethernet and SNMP
Access Procedure
To enable Ethernet and SNMP access, use the same procedures you would use to
disable these devices, but select On to enable each device.
4 WFM6120, WFM7020, and WFM7120 Declassification and Security

Troubleshooting
How to Clear or Sanitize a Non-Functional Instrument
To sanitize a non-functional instrument, remove the Main board and return the
instrument to Tektronix for installation of a new Main board. This procedure does
not clear calibration constants stored on the Audio, Eye and Composite boards.
How to Recover from Clearing or Removing the Instrument’s Memory
Reload the system software per the loading instructions.
WFM6120, WFM7020, and WFM7120 Declassification and Security 5