Data Memory for measured values
11.2 Data Memory for measured values
The basic information on saving data in ALMEMO
®
devices is provided in the
Manual, Section 6.9. The internal data memory on the ALMEMO
®
2890-9 is a
512-KB EEPROM with capacity sufficient for 64,000 to 100,000 measured val-
ues (depending on the number of channels). In the event of a failure in the sup-
ply voltage the measured data is retained intact. The EEPROM can be
reconfigured from linear memory to ring memory. (see Manual, Sec.
6.10.13.2)
11.2.1 Memory connector with SD card
If memory capacity proves insufficient or if the data needs to be evaluated
elsewhere, you can, as additional external memory, use a memory connector
(ZA 1904-SD) with a conventional SD card, available from our range of acces-
sories. The measured data is written to it via the memory connector in table
mode and in standard FAT16 format. The SD card can be formatted and its
contents can be read and deleted via any normal PC using any card reader.
Measured data can be imported into MS-Excel or into the accompanying mea-
sured value software Win-Control.
The memory connector with the additional memory card can be connected at
socket A2; it is recognized automatically. You can see that it is properly con-
nected in menu
Record to memory
in the function
External memory
, by the
higher memory capacity, and a file name in the function
File name
. (s.10.3.1 )
If the external memory is connected at the start of any measuring operation, it
will be used. In the course of the measuring operation it must not be un-
plugged; this would cause temporarily buffered measured values to be lost.
External memory capacity available
External memory 64.00 MB
Memory capacity still free
Memory free
21.75 MB
File name (maximum 8 characters)
File name ALMEMO.001
In the function
File name
, before starting any measuring operation, you can en-
ter an 8-character file name. In the absence of a user-assigned file name, the
default name “ALMEMO.001” or the name most recently used will be provided
automatically. So long as the connector configuration is not altered, you can
save several measuring operations, either manual or cyclic, even with num-
bers, in the same file. (s. 10.3.2) If, however, the
connector configuration
has been changed
since the most recent measuring operation and if no new
file name has been programmed, then a new file is always created and in so
doing the index in the file name extension is automatically incremented by 1,
e.g. “ALMEMO.002”. Similarly, if the file name entered already exists, then a
new file will be created with the same file name prefix but with a new index.
To check that the memory connector is
functioning properly
there is an LED
incorporated in the end of the handle; this indicates the following states :
●
No memory card detected :
LED flashes once long and then three times short.
●
Data is being recorded :
LED flashes in the same rhythm as the cycle.
ALMEMO
®
2890-9
49