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Operation Manual MA 28

 

 

 

8506915 Rev. 5 

50 

05/05/2021 

 

Guidance and manufacturer’s declaration - electromagnetic emissions 

The 

MA 28 

is intended for use in the electromagnetic environment specified below. The customer or the user of the 

MA 28 

should 

assure that it is used in such an environment. 

Emissions Test

 

Compliance

 

Electromagnetic environment - guidance 

RF emissions 
CISPR 11 

Group 1 

The 

MA 28 

uses RF energy only for its internal function. 

Therefore, its RF emissions are very low and are not likely to cause 
any interference in nearby electronic equipment. 

RF emissions 
CISPR 11 

Class B 

The 

MA 28 

is suitable for use in all commercial, industrial, business, 

and residential environments. 
 

Harmonic emissions 
IEC 61000-3-2 

Complies 
Class A Category 

Voltage fluctuations / 
flicker emissions 
IEC 61000-3-3 

Complies 

 
 

Recommended separation distances between 

portable and mobile RF communications equipment and the MA 28.

 

The 

MA 28 

is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or 

the user of the 

MA 28 

can help prevent electromagnetic interferences by maintaining a minimum distance between portable and 

mobile RF communications equipment (transmitters) and the 

MA 28 

as recommended below, according to the maximum output 

power of the communications equipment.  

Rated Maximum 

output power of 

transmitter 

[W]

 

Separation distance according to frequency of transmitter 

[m] 

150 kHz to 80 MHz 

= 1.17

√𝑃

 

80 MHz to 800 MHz 

= 1.17

√𝑃

 

800 MHz to 2.7 GHz 

= 2.23

√𝑃

 

0.01

 

0.12 

0.12 

0.23 

0.1

 

0.37 

0.37 

0.74 

1

 

1.17 

1.17 

2.33 

10

 

3.70 

3.70 

7.37 

100

 

11.70 

11.70 

23.30 

For transmitters rated at a maximum output power not listed above, the recommended separation distance 

in meters (m) can be 

estimated using the equation applicable to the frequency of the transmitter, where 

is the maximum output power rating of the 

transmitter in watts (W) according to the transmitter manufacturer. 

Note 1 

At 80 MHz and 800 MHZ, the higher frequency range applies. 

Note 2 

These guidelines may not apply to all situations. Electromagnetic propagation is affected by absorption and reflection from 

structures, objects and people. 

 

Guidance and Manufacturer’s Declaration - Electromagnetic Immunity 

The 

MA 28 

is intended for use in the electromagnetic environment specified below. The customer or the user of the 

MA 28 

should 

assure that it is used in such an environment. 

Immunity Test 

IEC 60601 Test level 

Compliance 

Electromagnetic environment - 
guidance 

Electrostatic 
Discharge (ESD) 
 
IEC 61000-4-2

 

+8 kV contact 
 
+15 kV air 

+8 kV contact 
 
+15 kV air 

Floors should be wood, concrete or 
ceramic tile. If floors are covered with 
synthetic material, the relative humidity 
should be greater than 30%. 

Electrical fast 
transient/burst  
 
IEC61000-4-4

 

+2 kV for power supply lines 
 
+1 kV for input/output lines

 

+2 kV for power supply lines 

 

+1 kV for input/output lines 

Mains power quality should be that of a 
typical commercial or residential 
environment. 

Surge 
 
IEC 61000-4-5

 

+1 kV differential mode 
 
+2 kV common mode 

+1 kV differential mode 

 

+2 kV common mode 

Mains power quality should be that of a 
typical commercial or residential 
environment.

 

Voltage dips, short 
interruptions and 
voltage variations on 
power supply lines  
 
IEC 61000-4-11 

< 5% 

U

T (>95% dip in 

U

T) 

for 0.5 cycle 
 
40% 

U

T (60% dip in 

U

T) 

for 5 cycles 
 
70% 

U

T (30% dip in 

U

T) 

for 25 cycles 
 
<5% 

U

T (>95% dip in 

U

T) 

for 5 sec

 

< 5% 

U

T (>95% dip in 

U

T) 

for 0.5 cycle 

40% 

U

T (60% dip in 

U

T) 

for 5 cycles 

70% 

U

T (30% dip in 

U

T) 

for 25 cycles 

<5% 

U

for 5 sec

 

Mains power quality should be that of a 
typical commercial or residential 
environment. If the user of the 

MA 28 

requires continued operation during 
power mains interruptions, it is 
recommended that the 

MA 28 

be 

powered from an uninterruptable power 
supply or its battery. 

 

Power frequency  
(50/60 Hz) 
 
IEC 61000-4-8

 

3 A/m

 

3 A/m

 

Power frequency magnetic fields should 
be at levels characteristic of a typical 
location in a typical commercial or 
residential environment.

 

Note: U

T is the A.C. mains voltage prior to application of the test level. 

 

Summary of Contents for MA 28

Page 1: ...Operation Manual MA 28...

Page 2: ...ations 11 3 4 Disposables 12 3 5 Accessories Replacement Parts 12 3 6 Recycling and Disposal 12 4 Unpacking and Hardware Orientation 13 4 1 Unpacking the System 13 4 2 Hardware Orientation 15 5 Operat...

Page 3: ...s www maico diagnostics com german support resources International https www maico diagnostics com support resources Copyright 2021 MAICO Diagnostics All rights reserved No part of this publication ma...

Page 4: ...en to adults It is used as part of a total test battery to determine hearing acuity by audiologists ENTs hearing healthcare professionals or other trained technicians in a hospital clinic healthcare f...

Page 5: ...y information as well as maintenance and cleaning recommendations READ THIS ENTIRE MANUAL BEFORE ATTEMPTING TO USE THIS SYSTEM Use this device only as described in this manual All images and screensho...

Page 6: ...is manual accompanying labels and or inserts A defective product should not be used Make sure all connections to external accessories are snug and secured properly Parts which may be broken or missing...

Page 7: ...manufacture Manufacturer Caution consult accompanying documents Warning consult accompanying documents Return to authorized representative special disposal required Reference number Medical Device Pat...

Page 8: ...nd or calibration Do not use the device if any damage is suspected Calibration of the device The audiometer and the transducers complement each other and share the same serial number i e MA1234567 The...

Page 9: ...ed a Medical Electrical System and is therefore responsible for the system to comply with the requirements If in doubt contact qualified medical technician or your local representative If the device i...

Page 10: ...quipment should be avoided because it could result in improper operation If such use is necessary this device and the other equipment should be observed to verify that they are operating normally Use...

Page 11: ...ar from date of delivery of the device to the original purchaser The device shall only be repaired and serviced by your distributor or by an authorized service center Opening the device case will void...

Page 12: ...power supply For cleaning use a lightly dampened cloth with soap water solution Disinfect the plastic housing of the MA 28 and its accessories by wiping the surfaces with wet Sani Cloth Active wipes o...

Page 13: ...n Ask your authorized local distributor when accessories need to be replaced 3 6 Recycling and Disposal Within the European Union it is illegal to dispose of electric and electronic waste as unsorted...

Page 14: ...shortage If any component appears to be damaged in shipment contact your distributor immediately to report it Do not attempt to use any component or device that appears to be damaged Reporting Imperf...

Page 15: ...Power Supply UES18LCPU 050200SPA USB Cable DD45 Audiometric Headphones DD65 v2 Audiometric Headphones DD450 High Frequency Headphones IP30 Insert Phones B71 Bone Conduction Headphones B81 Bone Conduc...

Page 16: ...and a handle to easily carry the device Figure 22 The connections are located in the case Figure 33 Figure 1 Figure 2 Figure 3 NOTE See section 5 4 detailed information about the device layout Adjusti...

Page 17: ...Insert plugs with care into the appropriate connection Do not wiggle the plug or pull with force while connected Disconnect plugs cautiously Figure 5 Table 4 Connections on Inside Panel of Device CONN...

Page 18: ...wer supply Printer is only charged when the MA 28 device is plugged in and on 4 2 4 Establishing a PC Connection Infection of the device or the software used with the device can lead to system failure...

Page 19: ...ction 4 Medical device Laptop battery driven 4 2 5 PC Interface Please refer to the MAICO Sessions operation manual for complete installation instruction and transferring of results to the PC 4 2 6 St...

Page 20: ...sure proper operation of the device by following routine check procedures for audiometric equipment 5 1 2 Where to Setup The MA 28 should be operated in a quiet room so that the audiometric examinatio...

Page 21: ...e 10 4 Store NR No Response Press and release to store result Press and hold to display a No Response NR result 5 Hz Press to increase the frequency Hz Press to decrease the frequency Hz 6 Hearing Lev...

Page 22: ...Displayed on the left side of the screen and indicates the level volume of the tone presented To change rotate the left rotary wheel Hearing Level dB Masking Level Displayed on the right side of the s...

Page 23: ...Warble P W Type of signal presented Options include Steady Pulse Warble Pulse and Warble P W F4 More To move to the 2nd menu screen 2nd menu screen F1 Delete To delete single stored measurement Set d...

Page 24: ...scratch the ear canal Always apply a foam eartip before inserting the insert phones into the ear canal Figure 14 First place the eartip securely on the adapter at the end of the insert earphone tubing...

Page 25: ...ilizing the same method as air conduction testing 5 8 3 Masking Masking is required if there is a notable threshold difference between the left and right ears It is possible for sound to be transmitte...

Page 26: ...ness levels please push the response switch when you hear a tone and release the button when you no longer hear it The patient response can only be recorded during tone presentation The test is access...

Page 27: ...active The Save DB is within the third Function Key Menu see section 5 6 Once Save DB is selected the Save to database screen is entered The results can be saved to a default name 1 created by the dev...

Page 28: ...ction Keys for View Database Function key Label Description F1 Back Return to test screen F2 Edit To update record with patient demographic information F3 Delete Deletes selected patient and all store...

Page 29: ...ppears to confirm deleting of all sessions 5 9 6 View Results Once you select View F4 from the session list screen the stored results are displayed Figure 21 1 ID and Name are displayed as enterd in t...

Page 30: ...Caps Lock Activates Caps Lock for internal keyboard F2 Navigate to previous field F3 Navigate to next field F4 Save Saves patient details to database record and returns to the patient list screen To m...

Page 31: ...More to access these functions See section 5 6 Table 14 Deleting Test Results Function key Description F1 Delete To delete a specific stored result Set the device to the Ear transducer and frequency...

Page 32: ...f device 2 Facility provides field name to write in facility information after printout 3 Patient data provides the field names Patient ID Last name First name Date of birth and Sex to manually enter...

Page 33: ...consider the recommendations given in section 4 2 4 in case the MA 28 is connected to a non medical device To transfer the data make sure the device is connected to the PC via USB connection and the...

Page 34: ...tup menu F3 To browse down in the setup menu F4 Save To save setting and go back to previous screen NOTE A secondary way to manage the setting options is use the Masking Level control to scroll throug...

Page 35: ...f lines displayed for bone conduction results on the audiogram Choose between Dash Solid No line Display ear side To select the ear side for 2 audiogram displays Choose between L R R L Default level T...

Page 36: ...o Nederlands Polski Backlight To select the intensity of the Backlight Choose a value between 30 very dark to 100 very bright Air frequencies To select the frequencies to be active during the air cond...

Page 37: ...to confirm 3 out of 5 or 2 out of 3 correct answers before moving to the next frequency Hughson Westlake familiarization To select if the patient shall be trained with a familiarization test On or not...

Page 38: ...12 H is chosen a further setting is available for selection of AM PM Time format Select the preferred clock using the 12 or 24 hour time format 5 10 3 Facility info Facility info allows loading of an...

Page 39: ...Open Paint 5 Press Ctrl e and change Width 560 Height 144 and select OK Figure 33 6 Enter facility information into window size Note The MA 28 printout uses arial narrow bold and font size 14 Anythin...

Page 40: ...21 7 Select Save as and select BMP picture Figure 35 8 Save to a USB flash drive Save the created file as follows File name FCI bmp Save as type Monochrome Bitmap bmp dib Figure 36 9 A confirming mess...

Page 41: ...lity information screen reads Image loaded to thermal printout To change a loaded image first Delete loaded image This will allow the Load button to become active 5 10 4 License key The License key sc...

Page 42: ...ox will display to verify the license key Figure 4139 Contact your local distributor if any problems occur Figure 41 Verification of added licenses is shown in the About screen Figure 4240 Figure 42 5...

Page 43: ...gate password fields Press Save to continue setting up the database password Press Back to return to the Setup menu without saving the Database password Figure 44 Once Save is selected a message appea...

Page 44: ...cal maintenance at least once per year MAICO Diagnostics puts diagrams and service manuals at the disposal of authorized service companies STANDARDS Safety Standards IEC 60601 1 2012 ANSI AAMI ES60601...

Page 45: ...125 Hz 8000 Hz Warble Tone 5 Hz sine 5 modulation Pulse Tone Pulse Length 250 ms or 500 ms Masking Narrow band noise IEC 60645 1 5 12 Octave filter with the same center frequency resolution as pure t...

Page 46: ...B in USB 2 0 4 Response RI 330R 5 Bone ZA 10 UA 3 Veff 6 Insert Masking Not applicable in actual version 7 Phone L ZA 10 UA 3 Veff 8 Phone R ZA 10 UA 3 Veff 9 AUX input Not applicable in actual versio...

Page 47: ...32 6000 20 5 25 5 110 95 8000 12 0 17 0 105 95 25 White Noise 0 0 110 Table provides max levels for PSE power only USB power results in reduced max levels Calibration values Insert phones IP30 Couple...

Page 48: ...00 2 5 8 5 110 95 4000 9 5 14 5 110 95 46 6000 17 0 22 0 100 85 8000 17 5 22 5 100 85 44 White Noise 0 0 110 Table provides max levels for PSE power only USB power results in reduced max levels Calibr...

Page 49: ...L NBN MAX LEVEL DB HL SOUND ATTENUA TION DB ISO 4869 1 125 30 5 34 5 85 70 8 3 250 17 0 21 0 100 85 15 5 500 8 0 12 0 110 95 26 1 750 5 5 10 5 110 100 1000 4 5 10 5 110 100 32 4 1500 2 5 8 5 110 100 2...

Page 50: ...metric Headphones Radioear DD45 2 0 Yes Audiometric Headphones Radioear DD65 v2 2 0 Yes High Frequency Headphones Radioear DD450 2 0 Yes Insert Earphone Radioear IP30 2 0 Yes Bone conductor Radioear B...

Page 51: ...itter manufacturer Note 1 At 80 MHz and 800 MHZ the higher frequency range applies Note 2 These guidelines may not apply to all situations Electromagnetic propagation is affected by absorption and ref...

Page 52: ...ld strengths from fixed RF transmitters as determined by an electromagnetic site survey a should be less than the compliance level in each frequency range b Interference may occur in the vicinity of e...

Page 53: ...000 General requirements for safety Collateral standard Safety requirements for medical electrical systems 5 IEC 60601 1 2 2014 Medical Electrical Equipment Part 1 2 General Requirements for Basic Saf...

Page 54: ...Operation Manual MA 28 8506915 Rev 5 53 05 05 2021 6 7 Checklist for subjective Audiometer Testing...

Page 55: ...ecifications are subject to change without notice MAICO Diagnostics GmbH Sickingenstr 70 71 10553 Berlin Germany Tel 49 30 70 71 46 50 Fax 49 30 70 71 46 99 E mail sales maico biz Internet www maico b...

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