Campbell CR3000 Micrologger, Руководство оператора

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Section 5. Overview
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5.2.9.1 Synchronizing Measurements in the CR3000 — Overview
5.2.9.2 Synchronizing Measurements in a Datalogger Network — Overview
Large numbers of sensors, cable length restrictions, or long distances between
measurement sites may require use of multiple CR3000s.
5.3 Data Retrieval and Comms — Overview
Related Topics:
• Data Retrieval and Comms — Quickstart
(p. 40)
• Data Retrieval and Comms — Overview
(p. 80)
• Data Retrieval and Comms — Details
(p. 466)
• Data Retrieval and Comms Peripherals — Lists
(p. 610)
The CR3000 communicates with external devices to receive programs, send data,
or join a network. Data are usually moved through a comms link consisting of
hardware and a protocol using Campbell Scientific datalogger support software
(p.
615).
Data can also be shuttled with external memory such as a CompactFlash (CF)
card (CRD: drive) or a Campbell Scientific mass storage media (USB: drive) to
the PC.
5.3.1 Data File Formats in CR3000 Memory
Routine CR3000 operations store data in binary data tables. However, when the
TableFile() instruction is used, data are also stored in one of several formats in
discrete text files in internal or external memory. See Memory Drives — On-
board
(p. 445)
for more information on the use of the TableFile() instruction.
5.3.2 Data Format on Computer
CR3000 data stored on a PC with datalogger support software
(p. 615)
are formatted
as either ASCII or binary depending on the file type selected in the support
software. Consult the software manual for details on available data-file formats.
5.3.3 Mass-Storage Device
Caution When removing a Campbell Scientific mass storage device
(thumb drive) from the CR3000, do so only when the LED is not lit or
flashing. Removing the device while it is active can cause data
corruption.
Data stored on a SC115 Campbell Scientific mass storage device can be retrieved
via a comms link to the CR3000 if the device remains on the CS I/O port. Data
can also be retrieved by removing the device, connecting it to a PC, and copying
off files using Windows File Explorer.