
OmniTrax Product Guide Page 3
OmniTrax terminology
•cable set - Two sensor cables (TX and RX) connected to one side of a processor. For SC1
sensor cable, the cable set is encased in a single outer jacket.
•cable pair - Two sensor cable sets connected through decouplers (TXA to TXB and RXA to
RXB). A cable pair can be comprised of either the two sides of a single processor, or the A-
side of one processor and the B-side of another processor.
•lead-in cable - Each sensor cable is comprised of a specified length of detecting sensor
cable, plus an extra 4 m of detecting cable in which the detection field builds to full strength,
plus 20 m of integral lead-in cable. The lead-in cable is fully shielded and does not allow the
detection signal to “leak” out of the cable and form the detection field. The lead-in cable is
connected to the processor and runs to the detection start point, without forming a detection
field. The junction between the lead-in cable and the detecting cable is marked with red bands.
•meter - The meter is the basic unit of measure for OmniTrax cable. On a 400 m cable set, the
processor analyzes 424 m of cable, which includes the lead-in cable. The meter is used to
define cable segments and alarm zones. The sensitivity profile records the cable sensitivity for
each meter of detecting sensor cable.
•range bin - Range bin is a term common to radar technology, and is used for precise target
location. With OmniTrax, there are up to 40 range bins per sensor cable (including lead-in).
The processor analyzes the received signals from the sensor cables and locates targets to
within one meter by processing the range bin response for signal strength and timing.
•cable segment - A cable segment is made up of a contiguous group of meters, and is used for
display and control purposes. Cable segments are software-defined during setup. The cable
segment is the finest granularity unit that is defined by the end-user. Each cable set can be
divided into up to 50 cable segments. Cable segments are used to create alarm zones, and
therefore, must begin and end where alarm zone boundaries are required. A cable segment
can be a part of one zone, and a cable segment can have one relay associated with it (up to
10 relays are available for reporting sensor alarms when using the optional relay output card).
In addition to the cable margin (alarm threshold) that is set for the full length of detecting cable,
a second cable margin can be set for each cable segment. Cable segments can also be
defined as inactive, whereby detecting cable will not report valid targets (by assigning a cable
segment to zone 0).
•alarm zone - An alarm zone is made up of one or more cable segments, and is used for the
control and annunciation of sensor alarms (access/secure, graphic map display with precise
target location). There can be up to 50 alarm zones per Silver Network based processor (over
two cable sets). Alarm zones are defined in software to match the site-specific zone layout
details (e.g., CCTV, fence sections, gates, buildings, etc.). Any grouping of segments can be
assigned to an alarm zone. The cable segments do not have to be contiguous, and can come
from both cable sets on one processor (not two processors). There can be a zone within
another zone, and a zone can bridge inactive cable segments. Zone 0 does not report targets,
and is used to identify lead-in cable, cable bypasses, and to set detecting cable to inactive.
Zone 0 does not count in the 50 zone total.
•location accuracy - OmniTrax location accuracy for a single valid target is to within one
meter. However, phase ambiguities can result in a location deviation of up to 4 m for a valid
target.
•target resolution - OmniTrax target resolution is in reference to two valid targets
simultaneously crossing the cables. In this case, two targets that are crossing within 24 m of
each other inside a period of three seconds or less, can merge and be reported as one target.
The single reported target can be located anywhere within the 24 m span of cable.