0611
Verifit User’s Guide Version 2.8
Page 106
22 Technical Specifications
Storage & Transportation
Temperature ....................................................- 20°C to +60°C
Relative humidity (non-condensing)........................5% to 95%
Atmospheric pressure...................................... 500 - 1060 hPa
General
Overall dimensions
Rear main unit .....14.5x16x6.5 in. (36.8x40.6x16.5 cm)
Test chamber .........14x14.4x4 in. (35.6x36.6x10.2 cm)
Weight .................................................................... 15lb (33 kg)
Display type ............................. fluorescent backlit active color
Display size....................................................... .12.1” diagonal
Resolution ......................................................800x600 (SVGA)
Printer type.................................................. thermal line printer
Printer resolution........................................... 200 dots per inch
Paper width ...............................................................3” (80mm)
Power amplifiers ......................................................................2
Stimulus Channels...................................................................2
Measurement channels ...........................................................2
Connectors...................1 - mouse (PS2-6 pin)
1 - QWERTY keyboard (PS2-6 pin)
1 - external monitor (15D HD)
1 - parallel printer (25D)
2-USB
1 - Ethernet (RJ45)
.
1 - RS232 serial (9D)
2 - external speaker jacks (RCA)
2 - expansion audio jacks (1/4”mono)
1 - monitor headset (3.5 mm st)
1- RECD transducer(3.5mm st)
2 - real-ear mic.(3.5mm st)
1 - test chamber ref. mic.(3.5mm st)
1 - coupler microphone (3.5mm st)
1 - battery substitute (3.5mm st)
HIT Chamber
Working Space ......................... 11x5x1.5 in (28x12.7x3.8 cm)
Speaker.............................. 2 - 2x3 in (5x7.5 cm) independent
Induction Coils per ANSI S3.22-2003
1 - Telephone Magnetic Field Simulator (TMFS)
1 - 23 cm diameter test loop
Battery Simulator ....................................per ANSI S3.22 2003
Frequency Range .............................................. 200 - 8000 Hz
Test Stimuli ...................tone, pink noise, dual-direction noise,
calibrated or live speech
Test stimulus levels ................. 40 to 90 dB SPL in 5 dB steps
Test stimulus levels (inductive) .......... 31.6mA/m(ANSI S3.22)
Test stimulus distortion................................ <2% at 90dB SPL
.................................................................. <0.5% at 70 dB SPL
Test stimulus accuracy at reference mic. for tones (200-2000
Hz).........................................................................±1.5 dB SPL
Test stimulus accuracy at reference mic. for tones (2000-
8000 Hz)................................................................±2.5 dB SPL
Equalization method ...................... real-time pressure method
Analysis frequencies per octave ...........................................12
Analysis filter bandwidth.........................................1/12 octave
Measurement accuracy at 1 kHz ..................................... ±1db
Measurement accuracy re 1 kHz ........... ±1 dB (200-5000 Hz)
............................................................ ±2.5 dB (5000-8000 Hz)
Measurement range ...................................... 30 - 140 dB SPL
Harmonic distortion measurement .............................. 2nd, 3rd
.............................................................................or 2
nd
plus 3rd
Harmonic distortion range ................................200 to 4000 Hz
Harmonic distortion accuracy............................................ ±1%
Battery drain range .....................................................0 - 20mA
Battery drain accuracy....................................................... ±5%
Battery drain resolution. ...............................................±01 mA
ANSI S3.22 - 1996 and 2003 tests available
a
OSPL90
a
Full-on Gain
a
Reference Test Gain
a
Frequency Response
a
Frequency Range
a
Maximum OSPL90
a
Harmonic Distortion
a
Attack & Release time
a
Equivalent Input Noise
a
Input/Output Curves
a
Coupler SPL - Telephone Simulator
a
Simulated Telecoil Sensitivity
a
Battery Drain
Other tests available
a
dual-direction real-time directional test
a
coupler SPL vs frequency
a
coupler gain vs frequency
a
spectral analysis
a
distortion vs frequency
a
manual measurement of output, gain and distortion
Real Ear
Speakers ................................................2 - 2x 3 in. (5x7.5 cm)
Probe modules .. 2 - each containing probe & ref. microhones
Probe microphone tube ...... Silicone 1 mm diameter x 75 mm
Frequency Range ............................................ 200 to 8000 Hz
Test Stimuli..................frequency-modulated tone, tone burst,
...... pink noise, dual-direction noise, calibrated or live speech
Freq. modulation ..................................triangular ±5%at 36 Hz
Stimulus levels for tones ............40 - 85 dB SPL in 5 dB steps
Test stimulus accuracy at reference mic. for tones
(200 - 2000 Hz) .....................................................±1.5 dB SPL
(2000- 8000 Hz) ....................................................±2.5 dB SPL
Equalization Method ....... real-time modified pressure method
Analysis frequencies per octave (tones) .............................. 12
Analysis bandwidth (speech, noise) ........................ 1/3 octave
Measurement accuracy at 1 kHz.....................................±1 dB
Measurement accuracy re 1 kHz............ ±1 dB (200-5000 Hz)
.............................................................±2.5 dB (5000-8000Hz)
Measurement Range ...............20-135 dB SPL (200-2500 Hz)
................................................ 30-140 dB SPL (2500-8000Hz)
ANSI S3.46 - 1997 tests available
a
Real-Ear Unaided Response
a
Real-Ear Aided Response
a
Real-Ear Occluded Response
a
Real-Ear Insertion Gain
Other tests available
a
Real-ear dual-direction real-time directional test
a
Real-ear harmonic distortion
a
Real-ear spectral analysis
a
Manual measurement of output, gain and distortion
Fitting methods available
a
Speechmap with DSL, NAL-NL1
a
Insertion gain with NAL-RP, NAL-NL1, Fig6, PogoII,
Berger, Libby
