Campbell Scientific CR800 and CR850 Measurement and Control Systems - Manual (Page 437)

Section 11. Glossary
437
Neighbor Device
Devices in a PakBus® network that can communicate directly with an
individual device without being routed through an intermediate device.
See PakBus
(p. 438).
NIST
National Institute of Standards and Technology
Node
Part of the description of a datalogger network when using LoggerNet.
Each node represents a device that the communications server will dial
through or communicate with individually. Nodes are organized as a
hierarchy with all nodes accessed by the same device (parent node)
entered as child nodes. A node can be both a parent and a child.
NSEC
Eight‐byte data type divided up as four bytes of seconds since 1990 and
four bytes of nanoseconds into the second.
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.