System information

Glossary-8 Vicon MX Hardware System Reference
where both feet are on the ground. Also
see Gait analysis and Single support.
Driver A hardware device or software
program that controls a specific hardware
device, such as a video driver.
Drop frame See SMPTE drop-frame
timecode.
DV Digital Video. A video-recording
format that stores compressed video
image and sound data in digital format
based on the IEEE 1394 standard. Also
see IEEE 1394 and Reference video.
DV video See Reference video.
DynaCal Dynamic Calibration. See
Camera calibration.
Dynamic trial A data capture during
which the target of the trial moves. Also
see Object, Range of Motion (RoM) trial,
Static trial, and Subject.
E
Earth See Ground.
EBU timecode The standard of
timecode defined by the European
Broadcasting Union, which is based on
video cameras operating at multiples of
25 Hz. During videotaping, frame
numbers corresponding to a particular
video frame are encoded in either LTC or
VITC. Also see CCIR, LTC, PAL, SECAM,
SMPTE timecode, Timecode, and VITC.
Eclipse data directory browser A
window in which new Eclipse databases
can be created or the contents of existing
databases can be viewed and managed in
Vicon application software (similar
functionality is provided by the Data
Management window in Vicon Nexus).
Also see Eclipse database.
Eclipse database The Vicon integrated
data management tool, which Vicon
application software uses to store and
manage all data associated with Vicon
motion capture trials. Data is organized in
a hierarchical structure, with specific data
and information stored in relevant nodes.
Also see Eclipse data directory browser,
.enf file, .eni file, Motion capture, and
Trial.
Edges In Vicon V-series systems, the
start and end points of horizontal lines of
video data for a blob. This looks similar to
the display of Vicon MX coordinates data
with connecting lines. Also see Blob and
Coordinates data.
Edit options A dialog box in which
users can configure parameters to control
the behavior of a specific feature or
function in Vicon application software.
EIA Electronic Industries Alliance
(formerly Electronic Industry
Association). A format defined for analog
black and white television, with a vertical
resolution of 525 lines and a base frame
rate of 29.97 Hz. This format is used in
Canada, Japan, Korea, Mexico, USA, and
parts of Central and South America. EIA
uses the SMPTE timecode standard. Also
see CCIR, LTC, NTSC, SMPTE timecode,
Timecode, and VITC.
EMG Electromyography. A test for
detecting the electrical activity of muscles
and the nerves controlling them to assess
their health. Vicon application software
can record and analyze the analog signals
from third-party EMG devices integrated
into a Vicon system. Also see Analog,
Datastation, and MX Control.
.enf file Eclipse Node File. A text file
with extension .enf, which contains all the
information about a specific node level in
an Eclipse database. This file contains the
default fields defined in the .eni file on
which it was based. An .enf file is
generated for each node in an Eclipse
database. Also see Eclipse database and
.eni file.
MXhardware_Reference.book Page 8 Thursday, September 7, 2006 11:36 AM