Storage - HBM Genesis GEN5i User Manual

Portable, integrated data acquisition system
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112
9.3

Storage

The GEN5i provides two storage paths as shown in Figure 9.1 on page 110:
Store data in on-board RAM at high speed
l
Transfer data directly at reduced speed to the controlling PC or (when
l
installed) to a local hard disk.
In addition to these storage paths the GEN5i provides two fundamental storage
modes:
Sweeps: data storage of predefined length. Sweeps typically use a trigger
l
to define the end of the sweep.
Continuous: data storage of undefined length. The end of this storage
l
mode can be defined by various events as described later.
When data is stored, this data is organized in recordings. A recording (noun) is
defined as all the data that has been stored between the start of acquisition
(RUN command) and the end of acquisition. The end can be defined in various
ways. A recording can have one or multiple sweeps, a continuous data stream
or a combination of both.
From within Perception a recording is organized as a pNRF file.
CAUTION
The GEN5i RAM is volatile. Therefore you will need to transfer the
acquired sweeps to your PC for archiving.
The storage mode defines how data that is digitized and acquired is saved. The
continuous storage mode will always store data, regardless of the acquisition
mode. The Sweeps storage mode will store only the sweeps, regardless of the
acquisition mode. However, the resulting file - or recording - will be different for
the various combinations of acquisition and storage mode.
Figure 9.2: Acquisition: Run - Storage: Continuous
GEN5i
I2679-4.0 en

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