2-4
Initial Setup
NOTE: Always eject the compact flash card (see File Manager in Section 8,
“Windows Software Reference”, or File Manager in Section 9, “PDA Software
Reference”) before removing the compact flash. Turn the instrument off before
removing or installing the wireless PC card.
About LI-8100A Data Records and Storage Options
The LI-8100A has 18 Megabytes of onboard flash available for data collection. The
data stored in onboard flash is compressed at an approximate ratio of 3:1.
Therefore, with compression*, about 50 MB of data can be stored on the
instrument. If more space is required for data logging, a compact flash card can be
used as well. Typical compact flash cards range from 128 MB to 4 GB or larger. A
1 GB compact flash card is currently included with each instrument.
When logging all data values, the size of the record is approximately 190 bytes.
Table 2-1 summarizes the amount of space required to log the largest data record
at one second intervals.
Table 2-1. Storage space required to log largest data record at 1 second intervals.
Space Required
11.1K
667.9K
15.6MB
Data Logging Period
1 minute
1 hour
1 day
100% duty cycle logging all data fields at 1 Hz
Typical protocols would not require the instrument to be recording data 100% of
the time (except when used with the LI-8150 Multiplexer). Table 2-2 illustrates
some example observation configurations and their respective durations based on
internal storage.
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