Campbell Scientific CR1000 Measurement and Control System - Manual (Page 460)

Section 11. Glossary
460
Null‐modem
A device, usually a multi‐conductor cable, which converts an RS‐232
port from DCE to DTE or from DTE to DCE.
offset
a term, often a parameter in a CRBasic measurement instruction, to
designate the y‐intercept, shifting factor, or zeroing factor in a linear
function. For example, when converting °C to °F, the equation is °F =
°C*1.8 + 32. The factor 32 is the offset.
Ohm
The unit of resistance. Symbol is the Greek letter Omega (Ω). 1.0 Ω
equals the ratio of 1.0 Volt divided by 1.0 Amp.
Ohm's Law
Describes the relationship of current and resistance to voltage. Voltage
equals the product of current and resistance (V = I*R).
on‐line data transfer
Routine transfer of data to a peripheral left on‐site. Transfer is
controlled by the program entered in the datalogger.
operating system
The operating system (also known as "firmware") is a set of instructions
that controls the basic functions of the CR1000 and enables the use of
user written CRBasic programs. The operating system is preloaded into
the CR1000 at the factory but can be re‐loaded or upgraded by the
CR1000 user using Device Configuration Utility
(p. 92) software. The most
recent CR1000 operating system file is available at
www.campbellsci.com
.
output
A loosely applied term. Denotes a) the information carrier generated by
an electronic sensor, b) the transfer of data from variable storage to
final storage, or c) the transfer of power from the CR1000 or a
peripheral to another device.
output array
A string of data values output to final storage. Output occurs when the
data table output trigger is true.