Fluke 754 Положение об энергозависимости памяти онлайн

Model SOMV 1 of 1 9/14/2012

Instrument Security Procedures

Model:

Fluke 753, Fluke 754

Product Name:

Documenting Process Calibrator

Instrument Description:

Documenting Process Calibrator

Memory Description:

1. U16, U104, U225, U416, U605, MICROCONTROLLER, TI MSP430F2491, 16 bit

microcontroller with 60 Kbyte + 256 byte flash memory and 2 Kbyte RAM. This flash

is nonvolatile memory containing operating code for the product. The RAM is volatile

memory that is used for program volatile variables and stack and holds Real Time

Clock information. The program using this RAM is a control program controlling the

software and hardware measurement process. This RAM is not accessible to the

user and its contents are lost when the product is disconnected from external power

and the battery is removed for 4 hours.

2. U2, MICROPROCESSOR, Freescale IMX27L,32 bit. This device contains a 24 Kbyte

ROM holding the Freescale bootstrap loader and a 45 Kbyte VRAM . The ROM and

VRAM are not accessible to the user or an external application program. The VRAM

contents are maintained when the power is on and lost when the product is turned

off.

3. U3, SDRAM, DDR, 1Gbit, volatile memory. The product’s embedded code is loaded

into this memory at power on time. This memory also holds the program volatile

variables, stack, and heap space. The contents of this memory are maintained when

the power is on and lost when the product is turned off.

4. U5, FLASH, 28F512M29EW, 512MBbit. This flash is non-volatile memory containing

embedded code for the product. This memory also stores the following: stored

procedure data+, procedure results*, saved as found/as left results*, saved

readings*, logged data*, user ID information*, time/date/language local settings**,

default pressure unit**, default temperature unit**, other setup information**, product

calibration data++, and program error log++.

5. U18, REAL TIME CLOCK/CALENDAR, NXP PCF8563. This part contains time-of-

day and calendar information**.

+ Data written under secure control of external application program

++ Data not accessible to user or external application program

* Data can be cleared with front panel service command(s)

** Data are selectable only from a fixed list

Memory Cleaning Instructions:

N/A