1 Kansas City VA Medical Center 4801 E. Linwood Blvd. Kansas City, MO 64128 Audiology SCOPE OF WORK AND GENERAL SPECIFICATIONS FOR: HEARING INSTRUSTMENT VERIFICATION SYSTEM 1. Background The Lenexa CBOC is opening in June 2021 and Audiology is asking for two hearing instrument verification systems to be placed in each hearing aid fitting room. 2. Specifications DESCRIPTION: HEARING INSTRUMENT FITTING SYSTEM MUST MEET OR EXCEED SALIENT CHARACTERISTICS BELOW: REQUIRED FEATURES: Dual probes for fast binaural fitting Viewport featuring Speechmap, patented directional test, unique noise reduction and feedback suppression tests. Test signal for frequency manipulating instruments Fitting protocols (DSL 5.0, NAL-NL1, Camfit) True two channel measurements Single/Dual view display options External monitor capability Sensory Loss Simulator ANSI, ITE & BTE couplers Occlusion effect test Battery Stimulator RECD transducer Probe monitor Telecoil test Manual Gain, output, and distortion tests DIMENSION REQUIREMENTS: Overall dimensions Rear main unit: 14.5 x 16 x 6.5in Test Chamber: 14 x 14.4 x 4in Weight: 17.6 lbs UTILITY REQUIREMENTS: Power consumption: 100-240V, 50-60Hz, 250VA Temperature: -20 to +60C Relative humidity (non-condensing): 5 95% GENERAL REQUIREMENTS: Display type: fluorescent backlit active color Display size: 12.1 diagonal Resolution: 800 x 600 (SVGA) Internal Printer: 3 thermal line printer, 200 dots/inch Headphone amplifier : 2 @ 5 watts each Stimulus channels: 2 Measurement channels: 2 Connectors: 1 ethernet (RJ45) 4 USB 1 HDMI 2 external speakers 2 expansion jacks (1/4 mono) 2 real ear mics (3.5mm st) 1 RECD transducer (3.5mm st) 1 monitor headset (3.5mm st) 1 test chamber ref. mic (3.5mm st) 1 coupler mic (3.5mm st) 1 battery substitute (3.5mm st) TEST BOX REQUIREMENTS Working space: 11 x 5 x 1.5in 2 independent speakers 2 x 3in Test Box isolation @1K Hz: .25dB Induction Coils per ANSI S3.22-2003: 1 telephone magnet field sim (TMFS) & 1 23cm diameter test loop Battery Simulator: per ANSI 3.22-2003 Frequency Range: 200-8000Hz Test Stimuli: Tone, Tone Burst, Pink Noise, Dual Direction Noise, Calibrated or Live Speech, ISTS Test Stimulus Levels: 40 to 90dB in 5dB steps Test Stimulus Levels (inductive): 31.6mA/m per ANSI S3.22 - 2003 Test Stimulus Distortion: <2% at 90B SPL and 0.5% at 70dB SPL Test Stimulus Accuracy at Reference Mic for tones (200-2000Hz)+1.5dB SPL Test Stimulus Accuracy at Reference Mic for tones (2000-8000Hz)+2.5dB SPL Equalization Method: Real time modified pressure method (stored for open fittings) Analysis frequencies per octave: 12 Analysis filter bandwidth (noise): 1/12 octave Measurement accuracy at 1kHz for tones: +/-1dB Measurement accuracy re 1kHz for tones: +/-1dB (200-5000Hz) and +/-2.5dB (5000-8000Hz) Measurement Range: 30-140dB SPL Harmonic Distortion measurement: 2nd and 3rd or 2nd plus 3rd Harmonic distortion range: 200-4000Hz Harmonic distortion accuracy: +/-1% Battery Drain range: 0-20 mA Battery Drain accuracy: +/-5% Battery Drain resolution: +/-.01 mA ANSI S3.22 1996 and 2003 tests available: OSPL90 Full-on Gain Reference Test Gain Frequency Response Frequency Range Maximum OSPL90 Harmonic Distortion Attack & Release Time Equiv. Input Noise Input/Output Curves Coupler SPL-Telephone Simulator Simulated Telecoil Sensitivity Battery Drain OTHER Tests Available: Speechmap* real ear audibility measures Real-Time adaptive directional verification Coupler SPL vs. frequency Coupler gain vs. frequency Spectral Analysis Noise reduction verification Distortion vs frequency Manual measurement of output, gain, and distortion VIEWPORT audibility, directional, noise reduction, and feedback suppression verification. ON-EAR MEASURES Speakers: 2 2x3 in. (5x7.5cm) ducted ports Probe microphone tube: Silicone 1mm diameter x 75mm Probe modules: 2 each containing probe and reference microphones Probe microphone noise floor (200-8000Hz): <45dB SPL Frequency range: 200-8000Hz Test Stimuli: frequency modulated tone, tone burst, pink noise, dual directional noise, calibrated speech, live speech, ISTS Frequency modulation: sawtooth +/-3% over 128ms Test stimulus levels at reference microphone for tones at 1m: 40-90dB SPL in 5 dB steps Test stimulus accuracy at reference microphone for tones (200-2000Hz): +/-1.5dB SPL Test stimulus accuracy at reference microphone for tones (2000-8000Hz): +/-2.5dB SPL Equalization method: real time modified pressure method (stored for open fittings) Analysis frequencies per octave: 12 Frequencies per octave (tone burst): 3 Analysis filter bandwidth (speech, noise): 1/3 octave Measurement accuracy at 1kHz for tones: +/-1dB Measurement accuracy at 1kHz for tones: +/-1dB (200-5000Hz) Measurement accuracy at 1kHz for tones: +/-dB (5000-8000Hz) Measurement range: 20-135dB SPL (200-2500Hz) & 30-140dB SPL (2500-8000Hz) ANSI S3.46 1997 TESTS AVAILABLE Real Ear unaided Response Real Ear Aided Response Real Ear Occluded Response Real Ear Insertion Gain OTHER TESTS AVAILABLE Speechmap* real ear audibility measures Real-Time adaptive directional verification Coupler SPL vs. frequency Coupler gain vs. frequency Spectral Analysis Noise reduction verification Distortion vs frequency Manual measurement of output, gain, and distortion VIEWPORT audibility, directional, noise reduction, and feedback suppression verification. FITTING METHODS AVAILABLE Speechmap with DSL 5.0a, NAL-NL1, CAMFIT, Insertion gain with NAL-RP, NAL-NL1, Fig 6, PogoII, Berger, Libby 3. DELIVERY & LOCATION INFORMATION Kansas City VA - Lenexa CBOC Kansas City VA Medical Center Audiology Clinic (Permanent Location) Audiology Clinic (Shipping Location) 15512 W. 113th St. 4801 E. Linwood Blvd. Audiology Lenexa, KS 66219 Kansas City, MO 64128

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