Rockwell Automation 441-PEN25 Enpac Ex Data Collector - Manual (Page 132)

Publication GMSI00-UM001A-EN-E - February 2005
Glossary 126
full scale value
The maximum expected amplitude (Y-axis) value for the data. If the data
exceeds the full scale value, it may not be possible to display or collect the full
amplitude range without adjusting the full scale value. In general, the full scale
should be the smallest value that is greater than the largest possible amplitude
of the data.
harmonic cursors
Multiple cursors that are at constant multiples of a fundamental frequency.
Typically you position a single cursor at the desired fundamental frequency and
then press a key to activate the harmonic cursors. These cursors help identify
the related frequency components in a spectrum
Hierarchy Tree
A graphic illustration of the database hierarchy in Emonitor. It contains the
machines in your predictive maintenance system.
high pass filter
A filter that excludes all frequencies below a defined frequency, also called a
low frequency corner. It allows, or passes, frequencies above the defined
frequency. It is useful for removing high vibration, low frequency signal
components that would dominate the signal.
inspection codes
Some data collectors allow you to store an inspection code with a
measurement. Inspection codes, also called note codes, can e used to indicate
the operating condition of a piece of equipment (e.g. hot bearings, stopped,
etc.). They can also be assigned directly to an item in the Hierarchy Tree or
location, or by importing data.
list
A set of measurement definitions, also called a route. You can create a list from
individual measurement definitions or from other lists. A list can be saved in,
and recalled from, the database. The most recently recalled or created list is
called the current list. You can load one or more lists into a data collector, and
you can plot or report on the data from the items in a list.