19 Technical specifications
127
MADSEN Zodiac
20
Technical specifications
Type identification
Madsen Zodiac is type 1096 from Natus Medical Denmark ApS
Compliance measuring system
Probe tone:
226 Hz at 85 dB SPL ± 3 dB
678 Hz at 72 dB SPL ± 3 dB
800 Hz at 70.5 dB SPL ± 3 dB
1000 Hz at 69 dB SPL ± 3 dB
Dynamic probe tone level:
The probe tone level will be compensated to accommodate varying ear canal
volumes.
The output level will be decreased in volumes < 1.7 ml
The output level will be increased in volumes > 2.3 ml
THD:
< 1% in 2 cc
Frequency accuracy:
± 0.5%
Range:
0.2 ml to 5.0 ml ± 5% or 0.05 ml whichever is greater *
5.0 ml to 8.0 ml ± 15% *
* The accuracy stated requires that calibration has been performed at the
altitude where the device is to be put into operation
Acoustic reflex
Sensitivity
Reflex Threshold and Reflex Decay:
0.01, 0.02, 0.03, 0.04 or 0.05 mmho
Reflex Screening:
0.04 mmho
Step size dB:
Quick Check: 10 dB
Diagnostic: 5, 10 dB Clinical: 1, 2, 5, 10 dB
Contralateral Stimulation
Pure tones:
500 Hz, 1000 Hz, 2000 Hz, 4000 Hz
Frequency accuracy:
± 0.5%
Range:
BBN, LPN, HPN at 50 to 110 dB SPL * ±3 dB
* measured in the respective couplers
Contralateral insert phone:
Contralateral TDH-39 phone:
Range:
500 Hz at 50 to 115 dB HL ± 3 dB
1000 Hz at 50 to 120 dB HL ± 3 dB
2000 Hz at 50 to 120 dB HL ± 3 dB
4000 Hz at 50 to 120 dB HL ± 3 dB
500 Hz at 50 to 115 dB HL ± 3 dB
1000 Hz at 50 to 120 dB HL ± 3 dB
2000 Hz at 50 to 115 dB HL ± 3 dB
4000 Hz at 50 to 115 dB HL ± 3 dB
