Tremetrics premier audiometer, the RA500 Advanced Micro- processor, continues to be at the forefront of audiometric technology - giving you the ability to easily customize your audiometer to fit your industrial testing requirements. A versatile, touch-sensitive alphanumeric keyboard allows the user to enter up to 25 customized test questions as well as company name and location, subject names, etc. The large, view-adjustable LCD screen lets you monitor complete test status as it occurs. In addition to setting up a complete custom audiometric testing protocol, the unit will store up to 1200 audiograms, retrieve baselines from your computer and provide detailed audiogram records via a high quality graphics printer. A built-in talkover microphone, multi- level security system and dual RS232C interfaces are standard features. Other added features include: 1200 audiogram storage and disk backup capability Proprietary "Notch Adjuster" software analyzes responses so successive tone presentation aren't uncomfortably loud Power line filter to protect audiometer from power fluct- uations. Fast audiogram tagging for selective record transfer Choice of OSHA, Canadian or other sprecific protocol criteria RA 500