Campbell Scientific CR3000 Micrologger User Manual
Page 461
Section 11. Glossary
461
multi‐meter
An inexpensive and readily available device useful in troubleshooting
data‐acquisition system faults.
multipler
a term, often a parameter in a CRBasic measurement instruction, to
designate the slope, scaling factor, or gain in a linear function. For
example, when converting °C to °F, the equation is °F = °C*1.8 + 32. The
factor 1.8 is the multiplier.
mV
The SI abbreviation for milliVolts.
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.
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. 463).
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.