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Campbell Scientific CR200/CR200X-series Dataloggers User Manual

Page 179

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Appendix A. Glossary

Ohms Law

Describes the relationship of current and resistance to voltage. Voltage

equals the product of current and resistance (V = I*R).

on-line data transfer

Routine transfer of data to a peripheral left on-site. Transfer is controlled by

the program entered in the datalogger.

output

A loosely applied term. Denotes a) the information carrier generated by an

electronic sensor, b) the transfer of data from variable storage to final

storage, or c) the transfer of power from the CR200(X) or a peripheral to

another device.

output array

A string of data points output to Final Storage. Output occurs when the data

interval and data trigger are true. The data points which complete the Array

are the result of the Output Processing Instructions which are executed

while the Output Flag is set.

output interval

The time interval between initiations of a particular data table record.

output processing instructions

Process data values and generate Output Arrays. Examples of Output

Processing Instructions include Totalize, Maximum, Minimum, Average,

etc. The data sources for these Instructions are values in Input Storage. The

results of intermediate calculations are stored in Intermediate Storage. The

ultimate destination of data generated by Output Processing Instructions is

usually Final Storage but may be Input Storage for further processing. The

transfer of processed summaries to Final Storage takes place when the

Output Flag has been set by a Program Control Instruction.

PakBus

A proprietary telecommunications protocol similar in concept to internet

protocol (IP). It has been developed by Campbell Scientific to facilitate

communications between Campbell Scientific instrumentation.

parameter

Used in conjunction with CR200(X) program Instructions, parameters are

numbers or codes which are entered to specify exactly what a given

instruction is to do. Once the instruction number has been entered in a

Program Table, the CR200(X) will prompt for the parameters by displaying

the parameter number in the ID Field of the display.

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