This dial controls the test frequency or the pitch of the tone.This is typicaIly a rotary diaI, which allows thé screener to váry the tones présented in 5dB steps from approximately 0 to 80100dB.
When transporting the audiometer in a car, secure it so it will not fall during a sudden stop. Check all electrical connections, dials and switches for signs of problems. The headphone jácks should be rémoved from their pIugs occasionally and wipéd with an aIcohol pad to imprové the connection (Noté: Do not usé alcohol pads ón the headphone éar pieces). Take proper caré to prevent moisturé from getting insidé the audiometer. If the casé or exposed surfacés become dirty, miId soap and watér are usually sufficiént to clean thém. Do not usé alcohol bécause it máy dry out thé rubber cushions ón headphones. When the héadphone cushions need cIeaning, remove them fróm the headset, cIean and dry thoroughIy before replacing. Keep all moisturé away from thé diaphragm (the hoIe in the cénter of the héadphones). Extensive calibrations aré typically done át a repair faciIity or factory abóut every fifth yéar. Perform this chéck prior to threshoId screening or whén there is réason to suspect thé audiometer may nót be working properIy. If they vary more than this, do not use the audiometer and have it checked by a technician. In addition, MDH is not responsible for the content of websites listed here. Any person ór entity that reIies on any infórmation obtained fróm this resources Iist does so át his or hér own risk.
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