Maico easyScreen User Manual

Operation Manual easyScreen
8508935 Rev. 4
81
04/04/2019
6.3 Calibration Values
RadioEar IP30 with Coupler IEC 60318-4 (60711).
TRANSDUCER
CE-CHIRP
®
pe RETSPL
[dB re. 20 µPa]
Click
pe RETSPL
[dB re. 20 µPa]
Radioear IP30 with eartips
32
35.0
Radioear IP30 with EarCups
TM
58.5
61.5
Calibration values are defined as MAICO standard values.
OAE Probe with Coupler IEC 60318-4 (60711).
TRANSDUCER
CE-CHIRP
®
pe RETSPL
[dB re. 20 µPa]
Click
pe RETSPL
[dB re. 20 µPa]
OAE Probe
35.0
33.5
Calibration values are defined as MAICO standard values.
BERAphone
®
with coupler 60318-3.
Transducer
CE-CHIRP®
pe RETSPL
[dB re. 20 µPa]
Click
pe RETSPL
[dB re. 20 µPa]
BERAphone
®
32.5
37.5
The calibration values for the BERAphone
®
are according to the PTB Report from
2008-05-19. A special calibration adapter is needed to mount the BERAphone
®
onto
the coupler with a pressure of 5 N.Stimulus
The ABR stimulus is different from the one specified in the standard IEC 60645-3. This
CE-CHIRP
®
stimulus has the same linear magnitude frequency response like the click
stimulus specified in the standard. However, it is designed as a sum of cosine functions in
the frequency domain. The frequencies of the cosines are multiples of the stimulus repetition
rate – with equal intensity for each frequency, to achieve the same linear magnitude
frequency response. However, the phase of the cosine components are delayed according
to the cochlear delay of the according frequency in order to achieve a more effective
stimulus design. The frequency range of the stimulus is from 200 Hz to 11,000 Hz.
6.4 Coupler Types Used for Calibration
DPOAE: Probe stimuli L1 and L2 are calibrated individually in SPL values using the
IEC 60711 ear simulator coupler made in accordance to IEC 60318-4.
TEOAE: Probe stimuli are calibrated in peSPL values using the IEC 60711 ear
simulator coupler made in accordance to IEC 60318-4.

Maico easyScreen Specifications

General

Brand	Maico
Model	easyScreen
Category	Medical Equipment
Language	English