Internal Data Memory; Memory Connector With Sd-Card - Ahlborn ALMEMO 2590-2A Operating Instructions Manual

The device status can be checked by means of the appropriate symbols
(see9.2) appearing in the top status bar of the menu.

Internal data memory

12.5.1
Data loggers ALMEMO 2590-4AS incorporate an internal 500-KB EEPROM
data memory, , sufficient for 60000 to 100000 measured values (depending on
the number of channels). In the event of a failure in the supply voltage the meas-
ured data is retained intact. The total memory capacity and the free memory
available are indicated in functions
EEPROM can be configured either as linear memory or ring memory; (see
12.5.8.5, Manual 6.10.13.2). The basic information on saving data in ALMEMO
devices is provided in the Manual, Section 6.9.
PLEASE NOTE !The first time the device is started only one sensor configuration
is saved to the internal memory; however, with effect from the next start this can
be supplemented by additional sensors. However, if other sensors are con-
nected the memory must be read out and then cleared before the next recording
session.

Memory connector with SD-card

12.5.2
On devices without internal memory or 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 SD-card, available from
our range of accessories. 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 Win-
Control (the accompanying measured value software).
The memory connector with the additional memory card can be connected at
socket A2; it is recognized automatically. You can check that this has succeeded
in the function
External memory
file name in the function File name. If the external memory is connected at the
start of any measuring operation, it will be used. However, in the course of the
measuring operation it must not be unplugged; this would cause temporarily
buffered measured values to be lost.
Memory capacity available, external
Memory capacity free
File name (max. 8 characters, and index)
Before starting any measuring operation you can, in the function
an 8-character file name. In the absence of a user-assigned file name, the de-
fault name ´ALMEMO.001´ or the name most recently used will be suggested au-
tomatically. So long as the connector configuration is not altered, you can save
several measuring operations, either manually or cyclically, also with numerical
assignment, all in the same file (see 12.5.6).
If, however, the connector configuration has been changed since the last
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
Internal memory
by the now increased memory capacity and a
12. Function menus
and
Free memory
External memory: 128.00 MB
Memory free :
File name: ALMEMO.001
File name
. The
®
21.75 MB
enter
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