GRAS 4. 0AO 12 Prepolarized Pressure Microphone. Typical applications and use. The broad working range and reliability has made 4. The physical profile serial number provides an index to overall functional capacity. It is the functional capacity of a particular organ or system of the body that is. Background and Methods We conducted two multicenter, doubleblind, placebocontrolled trials of intermittent administration of inhaled tobramycin in patients with. AndersPJ/Graphical_User_Interface_Design_for_AccuScreen_files/AS_device_docked_angled.jpg' alt='Home Audiometer Hearing Test Serial' title='Home Audiometer Hearing Test Serial' />AO the preferred prepolarized microphone for coupler and ear simulator setups and is the natural supplement or replacement of existing solutions. The 4. 0AO is especially suited for audiometer calibration when using a sound level meter analyzer without a 2. V polarization feature. It is used for production line testing in coupler setups for test of hearing aids, earphones, headphones, and headsets. The KEMAR Manikin can also be configured with 4. AO for wide band binaural sound quality recordings. AO can be used in. GRAS IEC 6. 03. 18 1 Ear Simulator RA0. GRAS IEC 6. 03. 18 5 2cc Coupler RA0. GRAS KEMAR Manikin 4. BA4. 0AO is included in. Home Audiometer Hearing Test Serial' title='Home Audiometer Hearing Test Serial' />GRAS IEC 6. Ear Simulator RA0. S1. GRAS IEC 6. 03. Ear Simulator System Type 4. AA S2. Other coupler systems can be configured with the 4. AO and a CCP preamplifier on request. The 4. 0AO is a very versatile microphone when connected to the RA0. Transmitter Adapter for Microphones. The 4. 0AO becomes a high impedance sound source when the RA0. In a coupler, this gives a frequency response that is as good as when the 4. AO behaves like a microphone. Compatibility. The 4. AO requires a standardized or CCP preamplifier and an input module that supports this technology with a BNC, SMB, or Microdot connector. System verification. For daily verification and check of your measurement setup, we recommend using a calibrator like GRAS Sound Level Calibrator 4. AG. For proper sensitivity calibration, we recommend using a pistonphone like GRAS Intelligent Pistonphone 4. AP. Calibration. When leaving the factory, all GRAS microphones have been calibrated in a controlled laboratory environment using traceable calibration equipment. Depending on the use, measurement environment and internal quality control programs we recommend that the microphone is recalibrated at least once a year. We offer two kinds of calibration as an optional after sales service GRAS Traceable Calibration and GRAS Accredited Calibration. GRAS Traceable Calibration is a traceable calibration performed by trained personnel under controlled conditions according to established procedures and standards. Psd Images Viewer more. This is identical to the rigorous calibration that all GRAS microphones are subjected to as an integral part of our quality assurance. GRAS Accredited Calibration is performed by the GRAS Accredited Calibration Laboratory that has been accredited in accordance with ISO 1. Core I7 Extreme Edition Laptop. DANAK, the Danish Accreditation Fund. If you want a new microphone set delivered with an accredited calibration in stead of the default factory calibration, specify this when ordering. Learn more at grascalib. Quality and warranty. All GRAS microphones are made of high quality materials that will ensure life long stability and robustness. The microphones are all assembled in verified clean room environments by skilled and dedicated operators with many years of expertise in this field. The microphone diaphragm, body, and improved protection grid are made of high grade stainless steel, which makes the microphone resistant to physical damage, as well as corrosion caused by aggressive air or gasses. This, combined with the reinforced gold plated microphone terminal which guarantees a highly reliable connection, enables GRAS to offer 5 years warranty against defective materials and workmanship. Service. If you accidentally damage the diaphragm on a GRAS microphone, we canin most casesreplace it at a very reasonable cost and with a short turn around time. Block B Burn Out Mp3'>Block B Burn Out Mp3. This not only protects your investment, but also pleases your quality assurance department because you dont have to worry about new serial numbers, etc.