Campbell Scientific CR3000 Micrologger - Manual (Page 467)

Section 11. Glossary
467
This is the principle behind thermocouple temperature measurement. It
also causes small, correctable voltage offsets in CR3000 measurement
circuitry.
Semaphore (Measurement Semaphore)
In sequential mode, when the main scan executes, it locks the resources
associated with measurements, i.e., it acquires the measurement
semaphore. This is at the scan level, so all subscans within the scan
(whether they make measurements or not), will lock out measurements
from slow sequences (including the system background calibration).
Locking measurement resources at the scan level gives non‐interrupted
measurement execution of the main scan.
Send
The Send button in datalogger support software
(p. 76).
The Send
command sends a CRBasic program, or an operating system, to a
CR3000.
serial
A loose term denoting output or a device that outputs an electronic
series of alphanumeric characters.
Short Cut software
A CRBasic program generator suitable for many CR3000 applications.
Knowledge of CRBasic is not required. Short Cut is available at no
charge at www.campbellsci.com.
SI (Système Internationale)
The International System of Units.
signature
A number which is a function of the data and the sequence of data in
memory. It is derived using an algorithm which assures a 99.998%
probability that if either the data or the data sequence changes, the
signature changes.
single‐ended
Denotes a sensor or measurement terminal wherein the analog voltage
signal is carried on a single lead, which is measured with respect to
ground.