Term. mV
The SI abbreviation for millivolts.
Term. NAN
Not a number. A data word indicating a measurement or processing error.
Voltage over-range, SDI-12 sensor error, and undefined mathematical results
can produce NAN. See the section NAN and ±INF
(p. 482).
Term. neighbor device
Device in a PakBus network that communicate directly with a device without
being routed through an intermediate device. See PakBus
(p. 522).
Term. NIST
National Institute of Standards and Technology
Term. node
Devices in a network — usually a PakBus network. The communication
server dials through, or communicates with, a node. 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. See PakBus —
Overview
(p. 88).
Term. NSEC
Eight-byte data type divided up as four bytes of seconds since 1990 and four
bytes of nanoseconds into the second. See Data Type
(p. 131, p. 130) tables.
Term. null-modem
A device, usually a multi-conductor cable, which converts an RS-232 port
from DCE to DTE or from DTE to DCE.
Term. Numeric Monitor
A digital monitor in datalogger support software
(p. 654) or in a keyboard
display.
Term. offset
A term, often a parameter in a CRBasic measurement instruction, that
designates the y-intercept (aka, 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. See Term. multiplier
(p. 520).
Term. 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 ampere.
521
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