Comparison |
| Application |
Compact Audiometer | Audiometer | Audiometer | Audiometer | Audiometer |
| Contents 1 |
Headset, Carrying Case | Headset, TDH 39 Earphones, Patient Response Audiogram Pad and Carrying Bag | TDH-39 Headset, 60 ohm | Batteries | Hughson-Westlake Test, Patient Response Button |
| Contents 2 |
Audiogram Forms | | Carrying Case, Batteries | Head Set | Power Supply Cord, Carrying Bag |
| Contents 3 |
Threshold Audiometry Card, Power Plug | | AC Adapter, Operator’s Manual | Carry Case | Headset Holmco 8103, TDH39 or DD65 instead of DD4 |
| Country of Origin |
Denmark | United States | Unknown | Unknown | Unknown |
| Dimensions |
| | 1.3 X 3.6 X 5.8 Inch | | 5.5 X 18 X 22.5 cm |
| Frequency |
125 Hz to 8000 Hz | 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz Better than ± 3%, | 250, 500, 1K, 2K, 3K, 4K, 6K, 8K Hz | 500, 1000, 2000 and 4000 Hz | 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8 kHz |
| Power Source |
AC Power / Battery Operated | AC Power | Battery Operated | Battery Operated | Battery Operated |
| Type |
Manual | Pure Tone Automatic Screening Air Conduction | Pure Tone Automatic Screening Air Conduction | Pure Tone Automatic Screening Air Conduction | Portable |
| UNSPSC Code |
42182401 | 42182401 | 42182401 | 42182401 | 42182401 |
| Features and Benefits |
- Wide intensity range
- 11 frequencies: 125 Hz to 8000 Hz
- Calibration storage for standard earphones and optional insert phones
- AC line power and battery
- Ideal for physician's office for screening audiometry
|
- Meets or exceeds ANSI S3.6 1989, (ASA 81-1989) ISO 389-1985, C.H.D.P, O.S.H.A, E.P.S.D.T. ,F.A.A., Police, Divers, requirements
- Hearing Threshold Range: 0 to 90dB in 5dB steps Accuracy better than ± 2 dB
- Harmonic Distortion - less than 3%
- Tone present indicator
- Tone switch
- Total Weight less than 4.5 Ibs.
|
- LCD Display
- -10 dB to 80 dB HTL Intensity range
- User selectable, 5 db increments step size
- Pulsed or continuous presentation mode
- Ultra portable
- Large, easy to read LCD screen
- Talkover feature for communicating with test subject
- Battery or AC powered
- 5 Year limited warranty
|
- Portable, handheld, air-conduction screener
- Pure tone signal from 15 to 50 dBHL
- Test frequencies 500, 1000, 2000 and 4000 Hz
- Dedicated DD45 headset
- Handheld device – powered by AA alkaline batteries
- Battery indicator
- 15 to 50 Air conduction
- Stimulus - pure tone
- 450 g Weight
- 5 dB Level
|
- The MA 25 is engineered to be a portable, tough and reliable air conduction audiometer with full range of frequencies
- New features combined with a fresh design
- Air conduction with 11 frequencies from 125 Hz to 8 kHz
- Customize the frequencies according to your own needs
- Intensities from -10 to +100 dBHL in steps of 5 or 1 dB
- Pure, warble and pulse tone
- Independent with battery or with power supply
- MA 25e with automatic Hughson-Westlake test
- Stimulus- pure, pulse and warble tone
- 5 or 1 dB Level steps
- -10 to +100 dBHL, 70 dBHL at 0.125 kHz, 90 dBHL at 0.25 and 8 kHz Hearing level range
- Patient response switch USB power supply
- ~35 msec Rise/Fall times
- 0.5% Typical, 2.5% maximum distortion
- -100 dB minimum Crosstalk
- Greater than 80 dB on/off ratio
- ±5% Frequency modulating rate at 5 Hz frequency modulation
- 3.5 lbs. Weight
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