Weight |
Less than 17 lbs (7.7 kg) |
Power supply |
100 – 240 volts, 50 – 60 Hz |
Display |
Fluorescent backlit active color LCD 800 x 600 pixels (SVGA) |
Internal printer |
Thermal, 200 dots/inch. 10 seconds per screen. |
User input devices |
Built-in keypad, mouse or user-supplied QWERTY keyboard |
Standard ports |
PS-2 mouse, PS-2 keyboard, RS232, parallel printer, VGA monitor, USB (2), network (RJ45) |
Audio outputs |
External sound-field speaker (front and rear), presentation headphones, monitor headphones |
Audio signal generators |
Two independent arbitrary signal generators with 5 watt amplifier per channel |
Frequency range |
200 – 8,000 Hz generation and measurement |
Networking support |
Automatic (DHCP) and manual address assignment |
Real-ear probe assembly |
Reference and probe microphone in same ear-level housing |
Dual probe microphone measurements |
Separate probe assembly for each ear, selectable under software control |
Measurement system |
Two microphone dual channel digital signal processing system. |
Display format |
Single chart or table per screen or data for two ears or two hearing aids displayed side-by-side |
Data presentation |
Graphical or data table |
Test chamber working space |
Acoustically treated with minimum dimensions of 8” x 5” x 1.5” (203 x 127 x 38 mm) |
Test chamber sound sources |
Two independent sound sources. Axes parallel to the test surface and at 90 ° to each other |
Battery simulator |
Power supply meets requirements of ANSI S3.22-1996. |
Battery substitutes for 10A, 13, 312 & 675 size batteries |
Resistance required by ANSI S3.22-1996 integrated into battery substitutes |
Telecoil magnetic field simulator (TMFS) |
Integrated into the test chamber. Meets requirements of ANSI S3.22-1996 |
Inductive test loop |
Integrated into the test chamber. 23 cm dia. Meets requirements of ANSI S3.22-1996 |
Sound-field equalization |
Automatic, prior to the presentation or repetition of any stimulus |
ANSI real ear requirements |
Meets ANSI S3.46 1997 real-ear system requirements |
ANSI hearing aid analyzer requirements |
Meets ANSI S3.22-1996 requirements for accuracy |
ANSI hearing aid tests provided |
OSPL90, Maximum OSPL90, Full-on gain, Reference test gain, Frequency response, Frequency range, Harmonic distortion, Attack & release times (at 250, 500, 1000, 2000, 4000 Hz), Equivalent input noise, Input/output curves (at 250, 500, 1000, 2000, 4000Hz), Telecoil response, Simulated telephone sensitivity, Test loop sensitivity |
Stimulus types (levels, dB SPL) |
Pure tone (40 – 90) |
Frequency-modulated tone (40 – 90) |
Tone burst (85 or 90) |
Pink noise (40 – 90) |
Digitized speech filtered to Cox & Moore long-term average spectrum (LTASS) (55 – 75) |
Digitized speech filtered to University of Western Ontario children’s LTASS (55 – 75) |
Digitized individual male speech (55 – 75) |
Digitized individual female speech (55 – 75) |
Digitized individual child speech (55 – 75) |
International Collegium of Rehabilitative Audiology (ICRA) speech (55 – 75) |
Speech vocal effort filters |
Spectral modifications applied to all speech stimuli to simulate soft and loud vocal effort |
Hearing aid microphone location effects |
Spectral modifications applied to all test chamber stimuli when simulating real-ear performance |
Directional hearing aid test |
Simultaneous measurement of frequency response from two directions |
Analysis bandwidth |
Tones – 1/12 octave |
Pink noise – 1/12 and 1/3 octaves |
Digitized speech – 1/3 octave |
Live speech – 1/3 octave |
Speech statistics (digitized or live) |
Long-term average speech spectrum in 1/3 octaves over length of passage |
Level exceeded in 128 ms intervals 1% of the time over length of passage |
Level exceeded in 128 ms intervals 70% of the time over length of passage |
Real ear insertion gain fitting methods |
Fig. 6, NAL-RP, NAL-NL1, Berger, POGO II, Libby, User-defined, None |
Real ear SPL fitting methods |
DSL for adults and children, NAL-NL1 for adults |
Real ear data presentation |
In dB SPL or dB HL |
Speech intelligibility index (SII) |
1/3 octave method per ANSI S3.5 – 1997, including loudness distortion factor |
Software updates |
Via built-in CD drive. No charge |
Safety approvals |
UL-2601-1, IEC 601-1, CSA C22.2 No. 601-1 |
On-line help |
Context-sensitive full-screen user’s guide. Printable version provided on software CD |
Warranty |
2 years parts and labour (90 day warranty on battery pills) |
