4. System Quickstart
Reading List
• Quickstart (p. 41)
• Specifications (p. 97)
• Installation
(p. 99)
• Operation (p. 303)
This tutorial presents an introduction to CR1000 data acquisition and a practical
programming and data retrieval exercise.
4.1 Data-Acquisition Systems — Quickstart
Related Topics:
• Data-Acquisition Systems — Quickstart (p. 41)
• Data-Acquisition Systems — Overview
(p. 62)
Acquiring data with a Campbell Scientific datalogger is a fairly defined procedure
involving the use of electronic sensor technology, the CR1000 datalogger, a
telecommunication link, and datalogger support software
(p. 512)
A CR1000 is only one part of a data-acquisition system. To acquire good data,
suitable sensors and a reliable data-retrieval method are required. A failure in any
part of the system can lead to "bad" data or no data. A typical data-acquisition
system is conceptualized in figure Data-Acquisition System Components
(p. 42)
Following is a list of typical system components:
• Sensors
(p. 42) — Electronic sensors convert the state of a phenomenon to an
electrical signal.
• Datalogger
(p. 43) — The CR1000 measures electrical signals or reads serial
characters. It converts the measurement or reading to engineering units,
performs calculations, and reduces data to statistical values. Data are stored
in memory to await transfer to a PC by way of an external storage device or a
telecommunication link.
• Data Retrieval and Telecommunications
(p. 45) — Data are copied (not moved)
from the CR1000, usually to a PC, by one or more methods using datalogger
support software. Most of these telecommunication options are bi-directional
and so allow programs and settings to be sent to the CR1000.
• Datalogger Support Software
(p. 46) — Software retrieves data and sends
programs and settings. The software manages the telecommunication link
and has options for data display.
• Programmable Logic Control
(p. 74) — Some data-acquisition systems require
the control of external devices to facilitate a measurement or to control a
device based on measurements. The CR1000 is adept at programmable logic
control. Unfortunately, there is little discussion of these capabilities in this
manual. Consult CRBasic Editor Help
(p. 125) or a Campbell Scientific
Application Engineer for more information.
• Measurement and Control Peripherals
(p. 85) — Some system requirements
exceed the standard input or output compliment of the CR1000. Most of
these requirements can be met by addition of input and output expansion
modules.
41
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