Siemens OXYMAT 64 Operating Instructions Manual page 145

Motherboard
Board which contains the basic data and firmware for the device. Here, data are processed
and stored, and interfaces and device I/Os are controlled and managed.
Noise
Totality of all phenomena which could disturb the transmission and/or recording of
information.
Operating mode
Various modes into which the device can be put by intervening from the outside. Three
modes are distinguished:
● Coded display mode
● Decoded display mode
● Operator control mode
Operating state
Common term for all states in which the device can be found during operation (e.g. measure,
fault, calibration, ...).
Operation level
Certain operating area (menus and functions) which is either freely accessible or protected
by a code.
Operator control mode
Operating mode in which the device is partially or entirely decoded and the functional check
is activated. The device is parameterized in this mode.
RC element
An RC element in electronics is a circuit comprising an ohmic resistor (R) and a capacitor
(C).
Sample gas
A gas which has been extracted from a process and is to be analyzed.
Signaling contact
Usually a floating contact contained in electronic components (e.g. relay) which signals the
occurrence of an event to a control unit.
OXYMAT 64
Operating Instructions, 06/2008, A5E00880383-03
Glossary
143