Bruker IFS 125M, User Manual, Page: 215 / 228

215 Bruker Optik GmbH IFS 125M User Manual
F Glossary
Alignment The adjustment of optical components, e.g. mirrors and lenses,
to bring all their optical axes in line to maximize spectrometer
performance.
Aperture The aperture wheel contains accurately etched holes to admit
light into the spectrometer.
Beamsplitter The beamsplitter splits the incident beam into two separate
ligth waves. Generally, the beamslitter is a half-mirrored sub-
strate that reflects and transmits approximately equal portions
of the incident radiation.
Calibration Calibration comprises the entirety of working steps to define
the relation between analyte concentrations and the corre-
sponding standard measurement values. Under specified con-
ditions the analyte concentrations are indicated by an
instrument, measuring system, or values which have been
evaluated when measuring substances or reference material.
See also
Wavenumber calibration .
Collimated light Light for which all flux lines are parallel.
Cross-over cable The cross-over cable includes a RJ45 plug on each cable end.
In one plug, however, the pairs leading the signal are swapped
(crossed). That means, one plug swaps the transmission data
with the received data to enable data exchange when one ter-
minal device is directly connected to another. If the transmis-
sion and received data were not swapped at one cable end, a
connection could not be accomplished.
Detector A detector converts incoming light into an electrical signal.
Ethernet Ethernet is the most widely installed Local Area Network
(LAN). A LAN is a network of interconnected workstations
sharing the resources of a single processor or server within a
relatively small geographic area (i.e. an office building).
Ethernet is a set of hardware and signaling standards used for
LANs. The most commonly installed systems are 10/100/1000
BaseT.
Fiber-optic cable Cable made of strands of thin fibers (glass or plastic wire) that
transmits (pulses of) light. Optical fiber carries much more
information than conventional copper wire and is in general not
subject to electromagnetic interference.