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device shall indicate either low cylinder pressure (33% +5 %, -0 %) or primary first stage <br />regulator failure. <br />The HUD shall serve as the secondary EOSTI indicator. The HUD shall be powered by the <br />SCBA's single power supply. It shall be mounted in the user's field of vision on the Facepiece- <br />Mounted Positive Pressure Regulator. It shall display cylinder pressure in increments of 100 %, <br />75 %, 50% and 33 %. The display shall not have a numerical representation of bottle pressure. At <br />full bottle pressure, two green Light Emitting Diodes (LED) shall be illuminated. At three - <br />quarter bottle pressure, one green LED shall be illuminated. At one -half bottle pressure, one <br />"yellow" LED shall be illuminated and flash at a rate not to exceed one (lx) time per second. At <br />one -third bottle pressure, one "red" LED shall be illuminated and flash at a rate not to exceed ten <br />(10x) times per second. The HUD shall have a low battery indication that is distinct and <br />distinguishable from the bottle pressure indications. <br />CONFIRM EXCEPTION <br />5) Harness and Backframe Assembly <br />A lightweight, lumbar support style backframe and harness assembly shall be used to carry the <br />cylinder and valve assembly and the pressure reducing regulator assembly. The backframe shall <br />be a solid, one -piece black powder- coated aluminum frame that is contoured to follow the shape <br />of the user's back. The backframe shall include a mounting for the pressure reducer. The <br />backframe shall include an over - the - center, adjustable tri -slide fixture, a para - aramid strap and a <br />double - locking latch assembly to secure 30, 45, 60, or 75 minute cylinders. <br />The harness assembly shall consist of a one size black para - aramid strap with a yellow stripe. <br />This harness shall include box - stitched construction with no screws or bolts. The harness <br />assembly shall incorporate parachute -type, quick - release buckles and shall include shoulder and <br />hip pads. The harness shall include a seat -belt type waist attachment. The shoulder strap shall <br />be fitted with a Drag Rescue Loop (DRL) capable of being deployed in an emergency situation <br />to drag a downed firefighter to safety. The shoulder strap shall be attached to the backplate by <br />way of a single, articulating metal bracket. <br />The one -piece aluminum backframe should include integrated donning /carry handles. The <br />handles shall allow the user to easily don the SCBA in the "over- head" style and also allow the <br />user to carry the SCBA. The backframe shall include accommodation and mounting spaces <br />suitable for installation of a distress alarm integrated with the SCBA. These mounting spaces <br />shall permit installation of an alarm sensor module in an area between the cylinder hanger <br />locking mechanism and the backframe. <br />CONFIRM EXCEPTION <br />6) Remote Gauge <br />The Remote Gauge shall be in the console on the user's right shoulder strap. The console shall <br />contain an integral edge lit mechanical pressure gauge that is automatically turned on by opening <br />the cylinder valve. The indicating pressure gauge shall be of a sweep gauge style with notations <br />indicating approximate cylinder air pressure. The console shall display to the user the following: <br />4 <br />