Campbell Scientific CR800 and CR850 Measurement and Control Systems - Manual (Page 431)

Section 11. Glossary
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Earth Ground
A grounding rod or other suitable device that electrically ties a system
or device to the earth. Earth ground is a sink for electrical transients and
possibly damaging potentials, such as those produced by a nearby
lightning strike. Earth ground is the preferred reference potential for
analog voltage measurements. Note that most objects have a "an
electrical potential" and the potential at different places on the earth ‐
even a few meters away ‐ may be different.
engineering units
Units that explicitly describe phenomena, as opposed to the CR800
measurement units of milliVolts or counts.
ESD
Electrostatic discharge
ESS
Environmental Sensor Station
excitation
Application of a precise voltage, usually to a resistive bridge circuit.
execution time
Time required to execute an instruction or group of instructions. If the
execution time of a program exceeds the Scan()
Interval , the program is
executed less frequently than programmed.
expression
A series of words, operators, or numbers that produce a value or result.
Glossary. File Control
File Control is a feature of LoggerNet, PC400 and RTDAQ
(p. 76)
datalogger support software. It provides a view of the CR800 file
system and a menu of file management commands:
Delete facilitates deletion of a specified file
Send facilitates transfer of a file (typically a CRBasic program file) from
PC memory to CR800 memory.
Retrieve facilitates collection of files viewed in File Control. If
collecting a data file from a CF card with Retrieve, first stop the
CR800 program or data corruption may result.