RF/Optical Priority Detector
The ST-9365 Priority Detector is a dual-card, two or four channel universal phase selector to be used for encoded or non-encoded optical priority requests from all major brands of optical emitters, as well as EMTRAC 900 MHz FHSS radio.
ST-9365 - Dual RF/Optical
The Priority Detector responds to frequencies from all major optical emitter brands, and it recognizes the frequency rates of requesting vehicles to differentiate their priority levels. The Priority Detector is capable of receiving both optical and RF requests and prioritizing them by priority level and class of vehicle.
The Priority Detector is compatible with NEMA, 170/2070, Caltrans, ITS, and custom cabinets. It can be installed directly into the input file of Type 170 controller cabinets or may be provided with a Priority Detector Case (ST-9194) for NEMA cabinets (when input-file space is not available).
Two & Four-Channel Optical Priority Detectors
The ST-9320 and ST-9340 Priority Detectors are single-card, two and four-channel devices to be used for encoded or non-encoded optical priority requests from optical emitters.
ST-9340 (4-channel) and ST-9320 (2-channel)
The Priority Detectors respond to frequencies from all major optical emitter brands, and recognize the frequency rates of requesting vehicles to differentiate their levels of priority. The Priority Detectors are capable of prioritizing simultaneous signal requests by priority level and class of vehicle.
The Priority Detectors can be installed directly into the input file of Type 170 controller cabinets or may be provided with a Priority Detector Case for NEMA cabinets (when input-file space is not available).
The ST-9320 and ST-9340 Priority Detectors are equipped with robust onboard memory and are capable of storing up to 5,000 detailed activity logs, which include Intersection ID, Vehicle ID*, Vehicle Class*, Vehicle Priority Level, Directional Code, Priority-Request Duration, Controller Confirmation (optional), and Request Start/Stop Date and Time.
*Vehicle ID and Class must be provided by emitting system.
The EMTRAC Optical Sensor detects optical strobe signals from vehicle-mounted emitters and outputs the interpreted signals to the cabinet-mounted EMTRAC Priority Detector.
Optical Sensors (1 dir, 2 dir, 2 dir/2ch)
EMTRAC Optical Sensors detect optical pulses from both EMTRAC and non-EMTRAC vehicle emitters. The Optical Sensor is fully compliant with NEMA TS2 standards and is encapsulated in a rigid weatherproof enclosure and is supplied with all hardware and sealing gaskets.
The Optical Sensor may be mounted on mast arms, span wire, or other appropriate structure with a direct, line-of-sight view of the intersection approach.
The EMTRAC Optical System is the preferred method for signal-priority control for agencies looking to update existing optical systems, while adding the ability to detect multiple types of legacy emitters.
For more detailed specifications, refer to the Optical Sensors cut sheet (PDF).