Setup
OmniTrax Product Guide Page 209
STC filter settings
The STC filter is used to prevent spurious signals from environmental effects and sharp increases
in the clutter signal from causing nuisance alarms. The STC filter is enabled as the default setting,
and should be disabled only if you cannot meet your low speed target detection requirements by
adjusting the target speed settings. The STC filter should always be used in applications where the
cables are installed at a shallow burial depth, such as slots in concrete or asphalt. It should also be
used for cables buried in light sandy soil or gravel, and for cables with a shallower burial depth
than recommended.
The STC LPF is used to enhance the detection of targets moving erratically at very low speeds.
Using the STC LPF in conjunction with the STC Filter can reduce environmental nuisance alarms,
while providing a high Pd for slow moving targets.
1. Select the Cable Common Cfig tab.
2. Select the check box to enable the STC filter (default = STC Filter enabled).
3. Select the check box to enable the STC LPF (default = STC LPF enabled).
4. Save the UCM file and download the configuration data to the processor.
Auxiliary I/O configuration
You configure the processor’s inputs and outputs (I/O) via the UCM, under the Aux Cfig tab. You
must specify the Aux Control mode and whether you have an Aux Option Card installed before you
configure the I/O. Figure 188:
illustrates the Aux Cfig tab on the OmniTrax UCM window.
Note The STC filter helps the processor differentiate between valid targets
and environmental effects. It also reduces the possibility of multiple
alarms caused by a single target. When enabled, the STC filter can
result in a slightly reduced Pd for extremely slow intrusion threats.
Note The STC Ratio and Bounce Back Suppression are factory parameters
that help prevent nuisance alarms caused by environmental effects.
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