Tektronix 1741C Installation and maintenance instructions

1741C
Analog Dual-Standard Waveform Monitor
Declassification and Security
ZZZ
Instructions
xx
www.tektronix.com
077-0153-00

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Table of Contents
Preface.............................................................................................................. iii
Clear and Sanitize Procedures................ .............. ................................ .............. ......... 1
Memory Devices............................................................................................... 1
Data Export Devices........................................................................................... 6
Troubleshooting..................................................................................................... 7
How to Clear or Sanitize a Nonfunctional Instrument............ ........................ ................. 7
How to Recover from Clearing or Removing the Instrument’s Memory................................ 7
1741C Declassification and Security i

Table of Contents
ii 1741C Declassification and Security

Preface
This document helps customers with data security concerns to sanitize or remove
memory devices from the 1741C Analog Dual-Standard 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 This document covers the Tektronix 1741C Analog Dual-Standard Waveform
Monitor.
Related Documents Document Part number Purpose
1741C Analog Dual-Standard
Waveform Monitor User Manual
071-0150-XX Installation and instrument
operation
1741C Analog Dual-Standard
Waveform Monitor Specifications
and PV Technical Reference
077-0152-XX Specifications and procedures
for checking instrument
performance
1741C Analog Dual-Standard
Waveform Monitor Service Manual
077-0155-XX Optional manual supporting
module-level servicing of the
instrument
1741C 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 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 1741C 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 2
FPGA 1.9 Mb Mapper#1 No Programmed
by onboard
flash memory
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
SRAM 512 K X 18 Mapper#1 RAM No Static
memory
for mapper
FPGA
Main boardRemove thepower
source from the
instrument for at least 20
seconds
Remove theMain
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
SDRAM 16 M X 16 Mapper#1 RAM
FPGA
Yes User can
initiate
capture to this
memory
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
FPGA 1.9 Mb Mapper#2 No Programmed
by onboard
flash memory
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
1741C 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 2
SRAM 512 K X 18 Mapper#2 RAM No Static
memory
for mapper
FPGA
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
SDRAM 16 M X 16 SDRAM for
Mapper#2 FPGA
Yes User can
initiate
capture to this
memory
Main board Remove the power
source fromthe
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
FPGA 1.9 Mb Rasterizer No Programmed
by onboard
flash memory
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
SDRAM 16 M X 16 Rasterizer
SDRAM
Yes User can
initiate
capturetothis
memory
Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
2 1741C Declassification and Security

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 2
SDRAM 16 M X 16 CPU RAM No CPU access Main board Remove the power
source from the
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tektronix for
board replacement
and adjustment
SRAM 256 K X 16 PLD RAM No PLD access Main board Remove the power
source fromthe
instrument for at least 20
seconds
Remove the Main
board; see the product
service manual for
removal instructions.
Store the removed
board in a secure
area or destroy it.
Contact Tek tronix for
board replacement
and adjustment
1During normal instrument operation.
2Before you remove any module or board for the purpose of sanitizing the instrument, please contact your local Tektronix Customer Service Center to check on
the availability and cost of replacement parts.
Table 2: Nonvolatile Memory Devices
Type and
minimum size Function
User
modifiable1
Data input
method Location To clear To sanitize 2
Serial EEPROMs
256 X 8
Stores Composite
calibration
coefficients
No Programmed
during
calibration
Composite boards Recalibrate
Composite
Remove the Composite
boards; see the product
service manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
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 page 4,
Clear Presets
Procedure.)(See
page 5, Clear IP
Address Fields
Procedure.)
Remove the Main board;
see the product service
manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
PLD 8 Kb Display controller No Programmed by
flash memory
during power
up
Main board None Remove the Main board;
see the product service
manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
1741C Declassification and Security 3

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 2
Real Time Clock Stores time set by
user
Yes UI 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
calibrationand
diagnostics
Main board (See page 5, Clear
Diagnostic Log
Procedure.)
Recalibrate Pix mon
to overwrite existing
values.
Remove the Main board;
see the product service
manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
Serial Flash Future expansion No Tested on
power up
Not used
Main board None Remove the Main board;
see the product service
manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
Serial EEPROM MAC address No Set at factory Main board None Remove the Main board;
see the product service
manual for removal
instructions. Store the
removedboardina
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
1During normal instrument operation.
2Before you remove any module or board for the purpose of sanitizing the instrument, please contact your local Tektronix Customer Service Center to check on
the availability and cost of replacement parts.
Clear Presets Procedure 1. Press and hold the PRESET button to display the preset configuration menu.
Then select Recall Preset >Factory Preset >SEL.Thisrestoresthepresets
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”.
4 1741C Declassification and Security

Clear and Sanitize Procedures
Clear Diagnostic Log
Procedure
1. Press the CONFIGbutton. 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 Address Fields
Procedure
1. Press the CONFIG button. Then select Network Settings.
2. Set IP ConfigModeto Manual to display the IP address.
3. Navigate to IP 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 and Gateway Address.
5. Press the CONFIG buttontoexittheconfiguration menu.
1741C Declassification and Security 5

Clear and Sanitize Procedures
Data Export Devices
The following table lists the data export devices. 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 page 6, Disable Ethernet Access
Procedure.)
USB Data storage Yes Standard USB protocol Frontofinst
rument 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.
Enable Ethernet Access
Procedure
To enable Ethernet access, use the same procedures you would use to disable
these devices, but select On to enable each device.
6 1741C Declassification and Security

Troubleshooting
How to Clear or Sanitize a Nonfunctional Instrument
To sanitize a nonfunctional 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 according to the software loading instructions.
1741C Declassification and Security 7