Campbell Scientific CR1000KD CR800 and CR850 Measurement and Control Systems - Page 439

Section 11. Glossary parameter Argument or parameter? These terms are frequently interchanged, but have a useful distinction. A parameter is part of a procedure (or command) definition; an argument is part of a procedure call (or command execution). An argument is place in a parameter. For example, in the CRBasic command Battery(dest), dest is a parameter and so defines what is to be put in its place. If a variable named BattV is meant to hold the result of the battery measurement made by Battery(), BattV is the argument placed in dest. Example: Battery(BattV) BattV is the argument. period average A measurement technique utilizing a high‐frequency digital clock to measure time differences between signal transitions. Sensors commonly measured with period average include vibrating‐wire transducers and water‐content reflectometers. peripheral Any device designed for use with, and requiring, the CR800 (or another Campbell Scientific datalogger) to operate. Ping A software utility that attempts to contact another specific device in a network. Poisson Ratio A ratio used in strain measurements equal to transverse strain divided by extension strain. v = ‐(εtrans / εaxial). precision A measure of the repeatability of a measurement. Also see the appendix Accuracy, Precision, and Resolution (p. 449). PreserveVariables PreserveVariables instruction protects Public variables from being erased when a program is recompiled. 439