node is typically a Campbell Scientific datalogger, a PC, or a
telecommunication device. See section Datalogger Support Software
(p. 450).
Term. parameter
Parameter
(p. 523): part of a procedure (or command) definition.
Argument
(p. 507): part of a procedure call (or command execution). An
argument is placed in a parameter. For example, in the CRBasic command
Battery(dest), dest is a parameter that defines what argument is to be put in
its place in a CRBasic program. If a variable named BattV is to hold the
result of the battery measurement made by Battery(), BattV is the argument
placed in dest. In the statement
Battery(BattV)
BattV is the argument.
Term. period average
A measurement technique using a high-frequency digital clock to measure
time differences between signal transitions. Sensors commonly measured
with period average include water-content reflectometers.
Term. peripheral
Any device designed for use with the CR1000 (or another Campbell
Scientific datalogger). A peripheral requires the CR1000 to operate.
Peripherals include measurement, control
(p. 85), and data-retrieval and
telecommunication
(p. 651) modules.
Term. ping
A software utility that attempts to contact another device in a network. See
section PakBus — Overview
(p. 88) and sections Ping (PakBus) (p. 398) and Ping
(IP)
(p. 295).
Term. ping
A CRBasic program execution mode wherein instructions are evaluated in
groups of like instructions, with a set group prioritization. More information
is available in section Pipeline Mode
(p. 152). See Term. sequential mode (p.
527).
Term. Poisson ratio
A ratio used in strain measurements. Equal to transverse strain divided by
extension strain as follows:
v = -(ε
trans
/ ε
axial
).
Term. precision
A measure of the repeatability of a measurement. Also see the appendix
Accuracy, Precision, and Resolution
(p. 533).
523
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