Somat eDAQlite, User Manual

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Somat eDAQ
lite
38 I2773-4.
4
en
files, use the explore eDAQ
lite
files option in the web interface to navigate to the
hd/eDAQ directory. This is not recommended except under the advise of HBM
support.
2.4.2 Data Storage Options
The ELCPU contains several options for data storage including the RAM disk, an
internal CompactFlash card and DRAM memory.
NOTE
The internal CompactFlash and DRAM memory options are referred to collectively as
PC Card storage. For information on selecting the actual media using the eDAQ
lite
web interface, see “Select Storage Device” on page 180 .
RAM Disk
The RAM disk storage option has quite limited use in most test applications. The
default 3.5-MB size is usually much too small for sequential data storage or histogram
data storage of many test runs.
The RAM Disk memory is a section of the volatile DRAM memory. This section of
DRAM memory is copied to the internal CompactFlash card on power downs or error
resets and then copied back to DRAM on boot up.
NOTE
The SIE format does not support data collection to the RAM Disk. Regardless of the
data storage setting, SIE data is saved to the storage device selected in the web
interface.
DRAM Memory
The amount of DRAM memory available for data storage is dependent on the size of
the socketed DRAM. The DRAM storage media option is applicable for limited testing
scenarios only. While it provides the maximum throughput compared to all other
storage modes, the DRAM memory is volatile. This means that the test data is lost if
the eDAQ
lite powers down or resets for any reason, such as a power failure or error
reset. In these cases when the eDAQ
lite
sets the PCMAccessError flag and begins
re-initialization, use the Format RAM Disk menu option to restore normal operation.
CAUTION
DRAM memory is volatile. All test data is lost if the eDAQ lite powers down or resets
for any reason.
HBM: public