PRS-M4S Overview
The PRS-M4S is composed of four (4) internal functional components:
The Electronics Module (EM), which houses the capacitor, sensors, and controller. These electronics also control the Autonomous Triggering System (ATS) that will deploy the parachute.
The non-removable Parachute Pod™, which contains an energetic charge, a push plate, and a folded parachute.
The Flight Termination System (FTS) Module (Internal), a module that enables the EM to communicate with the PRS-M4S’s Payload Source Development Kit (PSDK) for motor shutoff.
The mounting bracket and mounting screws, which attach the PRS-M4S to the Drone and allow for easy removal.
First Time Setup:
When the user receives the product, the PRS will come fully assembled and ready for installation. The required hardware for installation will be included in an accessories bag. For first-time installation on a drone, the top forward gasket door will need to be opened on the PSDK USB-C port to properly seat the PRS for mounting.
YOU MUST REGISTER YOUR PRS BEFORE USING IT TO MAINTAIN REGULATORY COMPLIANCE AND WARRANTY. REGISTER AT https://www.avss.co/drone-parachutes/drone-parachute-product-registration/
General Use
To use the PRS-M4S for a flight, the Drone and PRS shall be inspected prior to flight. Once configured for flight and installed, you will be ready to begin. Once the aircraft is in its flight configuration, the AVSS PRS-M4S can be mounted to the Drone. Once the PRS-M4S is secured to the Drone as per the Installation instructions, the PRS will be ready for use. The PRS-M4S will turn on automatically when the Drone is turned on.
The Manual Triggering Device (MTD) is initiated through the Drone transmitter using the PSDK onboard interface. To perform a manual trigger of the PRS-M4S, the system must be armed (see the "Status Indications" section for instructions), and the deploy button must be pressed for three (3) seconds. For the MTD to be armed, the pilot must toggle ON the "Parachute Arm" button in the PSDK config window AND the drone must maintain an altitude of more than 5 meters above ground. The arm status of the PRS is displayed in the status message window of the PSDK interface on the Drone transmitter, as shown in the "Status Indications" section.
Any error with the Drone will be communicated to the user via the Drone transmitter. During the flight, the PRS-M4S ATS will arm itself only once it has reached the minimum flyable altitude rating above takeoff. Afterward, if the Drone experiences a failure, the ATS detects the failure using a suite of sensors, forces the motors to shut off, and deploys the parachute without the need for pilot input.
DO NOT HAND-LAUNCH OR CATCH THE DRONE WITH THE PRS-M4S ATTACHED.
IF YOU FLY BELOW THE MFAR, THE PRS-M4S MAY NOT FUNCTION. THE PILOT SHALL NOT OPERATE THE DRONE WITH PRS-M4S ATTACHED OVER PEOPLE BELOW THE MFAR.
Last updated