Tektronix 1741C, Declassification And Security Instructions

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Clear and Sanitize Procedures
Table 1: Volatile Memory Devices (cont.)
Type and
minimum size
Function
User
modi
fi able 1
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 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
1
During normal instrument operation.
2
Before 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
modi
fi able 1
Data input
method
Location To clear To sanitize 2
Serial EEPROMs
256 X 8 Stores Composite
calibration
coef
fi cients
No Programmed
during
calibration Composite boards Recalibrate
Composite Remove the Composite
boards; 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
Flash Memory
512 M X 16 Loads FPGAs on
power up
Contains
instrument SW,
network access
parameters, and
user-de
fi ned
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
removed board in a
secure area or destroy
it. Contact Tektronix for
board replacement and
adjustment
PLD 8 Kb Display controller No Programmed by
fl ash memory
during power
up
Main board None 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 Declassi fi cation and Security 3