Campbell Scientific CR1000KD CR1000 Measurement and Control System - Page 465

Section 11. Glossary Seebeck Effect Induces micro‐Volt level thermal electromotive forces (EMF) across junctions of dissimilar metals in the presence of temperature gradients. This is the principle behind thermocouple temperature measurement. It also causes small, correctable voltage offsets in CR1000 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. 77). The Send command sends a CRBasic program, or an operating system, to a CR1000. 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 CR1000 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. 465