Sensors & Software Inc. NG250 ユーザーズマニュアル

9-Digital Video Logger (DVL)

Noggin

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Data acquisition is controlled by the Digital Video Logger (DVL). The DVL has software to set
survey parameters, collect, display and store data. 

The DVL has both an internal and a removable compact flash drive. The DVL firmware resides
on the internal drive. Data can be saved to either the internal or removable drive (Figure 9-1).
The removable compact flash drive is accessible by opening the door on the top of the DVL. 

Ensure the DVL is powered down before removing or inserting the compact flash drive. 

Loosen the finger screws on the top of the DVL, swing the door open and press the button to
eject the drive. 

The DVL comes with a removable compact flash drive but the user has the option to purchase
additional drives for data storage. It is best to purchase an industrial grade compact flash drive.
Normal compact flash drives work but the higher the transfer rates and temperature ranges the
better. The DVL can use cards up to a maximum of 2 GB in size. Sandisk, PSI-APRO,
SimpleTech, Kingston, Viking, and Pretech are a few manufactuers of compact flash drives.
These are widely available in consumer electronics stores. 

To transfer data from the removable drive to a PC the user will need to purchase a card reader
(Figure 12-17). These are widely available in consumer electronics stores.