GSE Scale Systems - 197
Chapter 19 Memory Expansion (OPTION) Technical Reference Manual
Chapter 19 Memory Expansion
(OPTION)
19.1 Memory Expansion Option
(GSE Part #: 09-30-24164)
The 574 uses EEPROM (electrically erasable,
programmable, read only memory, also referred to as E
2
memory) to store all setup parameters and other retained
data, such as calibration data, accumulated totals, entered
ID data, stored data rows, incrementing registers, etc. E
2
memory provides excellent protection against
undesirable loss of data.
Included standard with the 574 instruments are two 8 pin
sockets for data storage IC's. Each socket can hold either
a 512 or a 2K byte E
2
. From GSE, one of the sockets
has a 2048 byte E
2
installed and the other is empty.
(The 574 must have at least a 2K E
2
chip installed (2048
bytes) for standard default settings.)
Of these 2048 bytes, about 382 are used for all the
standard setup parameters in the instrument (including
34 bytes for the default selections for Custom Transmit
Setup and ID Setup), leaving 1666 for optional setup
parameters. The features which use variable amounts of
storage are listed in Table 37 along with the calculations
to determine the amount required.
While setting up the unit, if the error message EEROM
Full! appears after making an entry or selection, then the
setup you are attempting will not fit into the currently
installed memory storage space. Either reduce the size
of storage required or install more memory space by
adding memory. The unit automatically senses how
much memory has been installed.
If more memory storage space is required, several
options are available. One option is to add a second E
2
(2K x 8) to the unit in the empty 8 pin socket labeled U2
(GSE Part #09-30-24164) which can be obtained from
GSE, Inc. This will provide a maximum of 4096 storage
bytes.
If only a little more storage space is required, the smaller
512 byte E
2
which may also be installed to augment the
standard memory storage space.
19.2 INSTALLATION OF ADDITIONAL
MEMORY
When replacing the main E
2
(U1), it is recommended
that an E
2
copy be performed first. This will let you
maintain all of the setup data, including important
calibration data, the serial numbers and the audit trail
value. The procedure is as follows: (Refer to figure 28
Main Board PC746B).
a. Disconnect the unit from the AC power source.
b. Remove the plastic top of the unit.
c. Install the new E
2
(Part #09-30-24164) in U2.
d. Power up the instrument.
e. Allow for changes to be made by keying in <1>
<0> <0> <SELECT> <2> <3> <6> <4> <0>
<ID> <ENTER>
f. Select the Setup Mode 65000 by pressing <6>
<5> <0> <0> <0> <SELECT>.
g. Press <ENTER>. The next prompt reads:
Enter Copy?.
h. If you wish to proceed with the copy, press
<ENTER> again. Pressing any other key will
abort the copy.
i. The copy process will begin automatically. A
counter will be displayed which increments by
one as each byte is copied. It will take about 3
seconds to copy 512 bytes. The number of
SECTION - 19.2
Install the Memory Expansion Option to increase
memory to 4K bytes.
CAUTION!
The following procedure should be performed only
by authorized service personnel!
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