otometrics Madsen Xeta User manual

MADSEN Xeta
User Guide
Doc. No.7-50-1530-EN/05
Part No.7-50-15300-EN

Copyright notice
© 2014,2019Natus MedicalDenmark ApS. All rights reserved. ® Otometrics, the OtometricsIcon, AURICAL, MADSEN, Otoscan,
ICS and HORTMANN are registered trademarks of Natus MedicalDenmark ApS in the U.S.A. and/or other countries.
Version release date
2019-06-09 (214081)
Technical support
Please contact your supplier.
Otometrics - MADSEN Xeta
2

Table of Contents
1 Device description 4
2 Intended use 4
3 Unpacking 5
4 Installation 5
5 Powering the device 6
6 Connecting MADSEN Xeta to OTOsuite 6
7 Connecting accessories to MADSEN Xeta 7
8 Toolbar icons in the Audiometry Module 8
9 Proper transducer placement 9
10 Performing tone audiometry 10
11 Service, cleaning and calibration 11
12 Other references 13
13 Technical specifications 13
14 Definition of symbols 19
15 Warning notes 20
16 Manufacturer 22
Otometrics - MADSEN Xeta 3

1 Device description
MADSEN Xeta is an audiometer for testing a person's hearing.
MADSEN Xeta offers air and bone audiometry as well as masking. Besides manual testing,
MADSEN Xeta employs fast automatic screening and threshold audiometry algorithms.
MADSEN Xeta incorporates multi-patient data storage and patient testing according to a
pre-loaded patient list.
• MADSEN Xeta can be used in connection with the OTOsuite Audiometry Module software for online monitoring of
test results, data export and storage, printing, and NOAH compatibility.
Test intensities and frequencies as well as the current test settings and other information are shown on the PC mon-
itor.
A patient list can be edited in the software and downloaded to MADSEN Xeta.
Operation
The front panel buttons have indicator lights, which clearly show the device's current settings.
Sound level, frequency and other information are shown clearly on the device display.
2 Intended use
MADSEN Xeta and the Audiometry module
Users: audiologists, ENTs and other health care professionals in testing the hearing of their patients.
Use: screening and diagnostic audiometric testing.
2.1 Typographical conventions
The use of Warning, Caution and Note
To draw your attention to information regarding safe and appropriate use of the device or software, the manual uses pre-
cautionary statements as follows:
Warning •Indicates that there is a risk of death or serious injury to the user or patient.
Caution •Indicates that there is a risk of injury to the user or patient or risk of damage to data or the device.
Note •Indicates that you should take special notice.
To obtain a free printed copy of the user documentation, contact Natus MedicalDenmark ApS (www.natus.com).
4 Otometrics - MADSEN Xeta
1 Device description

3 Unpacking
1. Unpack the device carefully.
When you unpack the device and accessories, it is a good idea to keep the packing material in which they were
delivered. If you need to send the device in for service, the original packing material will protect against damage dur-
ing transport, etc.
2. Visually inspect the equipment for possible damage.
If damage has occurred, do not put the device into operation. Contact your local distributor for assistance.
3. Check with the packing list to make sure that you have received all necessary parts and accessories. If your package is
incomplete, contact your local distributor.
4. Check the Test Report (Calibration Certificate), make sure that the transducers (headphones and bone oscillator) are
the correct ones, and that they comply with the ordered calibration standards.
4 Installation
Install OTOsuite on the PC before you connect to MADSEN Xeta from the PC.
For OTOsuite installation instructions, see the OTOsuiteInstallation Guide, on the OTOsuite installation medium.
MADSEN Xeta is fully assembled on delivery, and you simply have to connect cables.
Caution •To connect MADSEN Xeta to the PC, use the supplied USB cable. The cable length must not exceed 3 m
(approx. 10 feet).
Installation sequence
1. Install OTOsuite on your PC.
2. Assemble and set up MADSEN Xeta.
–Powering the device ►6
3. Switch on MADSEN Xeta.
4. Run the Configuration Wizard in OTOsuite to connect to and set up communication with MADSEN Xeta.
– See Connecting MADSEN Xeta to OTOsuite ►6.
Connection panel - MADSEN Xeta
For a detailed description of the connection panel, see the MADSEN XetaReference Manual.
The connections are located at the back of MADSEN Xeta.
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3 Unpacking

A. AC left
B. BC
C. AC right
D. Masking insert
E. Patient response
F. RS232 interface
G. On/off switch
H. Mains power socket
Caution •When you connect other electrical equipment to MADSEN Xeta, remember that equipment that does not
comply with the same safety standards as MADSEN Xeta can lead to a general reduction in the system's safety level.
5 Powering the device
1. Plug the power cord into the power socket of MADSEN Xeta.
See Installation ►5.
2. Plug the other end of the power cord directly into an AC mains power
outlet with a three-wire protective ground.
Switching MADSEN Xeta on and off
The on/off switch is located on the back of MADSEN Xeta.
6 Connecting MADSEN Xeta to OTOsuite
Launching OTOsuite
When you use MADSEN Xeta for the first time, run the Configuration Wizard to set up the connection between MADSEN
Xeta and OTOsuite. After you have configured OTOsuite for the first time, if MADSEN Xeta is turned on when you open
the Control Panel in OTOsuite, then MADSEN Xeta will connect to OTOsuite automatically. Otherwise, you can connect
MADSEN Xeta as follows:
6 Otometrics - MADSEN Xeta
5 Powering the device

1. Switch on the device.
2. Launch OTOsuite.
3. In the OTOsuite toolbar, click Control Panel.
4. In the Control Panel, click Connect.
Connecting MADSEN Xeta to OTOsuite
• Run the OTOsuite Configuration Wizard to connect to and set up communication with MADSEN Xeta: Select Tools>
Configuration Wizard
Click the Configure button next to Audiometry and connect to the device as described in the OTOsuiteUser Guide.
7 Connecting accessories to MADSEN Xeta
1. When selecting accessories connected to the RS232 socket and DC output of the device, the following
points must be considered:
– Use of connected equipment in a patient environment
– Proof that connected equipment has been tested in accordance with Medical Electrical Systems in IEC
60601-1 3.1 edition: 2012, ANSI/AAMI ES60601-1 (2005) + AMD 1 (2012) and CAN/CSA-C22.2 No.
60601-1 (2014).
See General warning notes ►20.
See also Installation ►5.
For a detailed description of the connection panel, see the MADSEN XetaReference Manual.
7.1 Air conduction
See Installation ►5for an overview of the connection panel.
Headphones
• Connect the right and left cables (red and blue) from the transducers to the right and left AC sockets in the rear panel
of MADSEN Xeta.
Insert phones
• Connect the Insert phones to the right and left AC socket in the rear panel of MADSEN Xeta.
They must be connected according to calibration.
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7 Connecting accessories to MADSEN Xeta

• To verify the transducer used, press Setup and select AC to view the transducer selected. If required, select the
desired transducer.
7.2 Bone conduction
See Installation ►5for an overview of the connection panel.
• Connect the bone conduction transducer plug into the BC socket located in the rear panel of MADSEN Xeta.
8 Toolbar icons in the Audiometry Module
The icons available in the toolbar depend on the test function that you have selected.
Audiometry icons
Menu item Icon Description
Combined Audiogram Click to toggle between viewing both ears in a single audiogram (com-
bined audiogram) or both a left and a right audiogram on your screen.
Combined View
• Click to view both ears in a single audiogram.
Split View
• Click to view separate audiograms for each ear.
Masking Assistant Enable or disable the Masking Assistant.
The Masking Assistant causes an unmasked threshold to flash repeatedly
if masking is recommended.
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8 Toolbar icons in the Audiometry Module

Menu item Icon Description
Standard / All / High
frequencies
The graph shows up to 20,000 Hz. MADSEN Xeta presents stimulus up to
12,500 Hz.
• Click to choose between viewing:
Standard Frequencies
Displays the audiogram from 125 to 8000 Hz.
All Frequencies
Displays the audiogram from 125 to 20,000 Hz.
High Frequencies
Displays the audiogram from 8000 to 20,000 Hz.
New Audiogram Select new audiogram. You will be prompted to save or cancel current
data.
Select Orientation Click to select the perspective of the patient's ears as presented on the
screen for graph and table views.
You can also select the location of the stimulus control.
9 Proper transducer placement
Headphones
1. Loosen the headband and place both the left and right side of the headphones simultaneously.
Note •If the headphones are not placed properly, there is risk of causing the ear canal to collapse which will result in
elevated thresholds.
2. Aim the center of the headphones towards the patient's ear canals and gently place them against the ears.
3. Tighten the headband while holding the headphones in place with your thumbs.
4. Examine the placement of the headphones to make sure they are level, and properly positioned.
Insert Earphones
Young children tolerate insert earphones better than headphones.
1. Select the largest foam eartip that will fit into the patient's ear.
If the eartip is too small the sound will leak out and the dB level will not be accurate at the eardrum.
Insert earphones have greater attenuation between ears especially at the low frequencies; this reduces the need for
masking.
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9 Proper transducer placement

2. It is best to clip the insert earphone transducers behind the child or on the back of their clothing and then fit the
foam eartip into the child's ears.
Bone Oscillator
Note •For unmasked bone thresholds, you can store binaural data:
Note •If there is a difference of 10dB or greater between the bone conduction threshold and the air conduction
threshold of the same ear, masking is needed. The Masking Assistant can assist you in determining which thresholds
need to be masked.
Note •If the SRT of the test ear and the SRT or PTA of the nontest ear differ by 45dB or more, masking is needed.
If the SRT of the test ear and the bone conduction PTA of the nontest ear differ by 45 dB or more, masking is needed.
Mastoid placement
1. Move any hair covering the mastoid out of the way and place the flat round part of the bone oscillator securely on the
boniest portion of the mastoid without any part of the transducer touching the external ear.
2. Make sure the bone oscillator is tight on the mastoid but still comfortable.
3. If you are going to perform masking with earphones, position the other end of the bone oscillator headband over the
patient's temple on the opposite side of the head so that the headband of the earphones and bone oscillator fit on
the patient's head.
10 Performing tone audiometry
For detailed examples of audiometric testing, see the MADSEN Xeta Reference Manual.
During online testing, the screen reflects the test done by the audiometer as it progresses.
10 Otometrics - MADSEN Xeta
10 Performing tone audiometry

A. Stimulus bar
B. Work area
C. Legend box
1. Prepare the patient. If you wish to instruct the patient after you have placed the transducers on the head of the
patient, you can use the Talk Over button. You can talk to the patient to adjust the patient communication levels
when Talk Over is active.
2. Select test conditions for ear, transducer, unmasked/masked, and test type on MADSEN Xeta.
3. Select the test frequency with the Hz knob.
4. Select the stimulus level with the dB knobs.
5. Present the tone with the stimulus presentation button.
6. Use the Store button to store the data point and proceed to the next frequency.
7. Repeat steps 3 to 6 until all the measurements you need have been completed. If needed, did you test:
– Both ears
– Air conduction
– Bone conduction
– Masking
– Thresholds
8. Save the audiogram.
11 Service, cleaning and calibration
Warning •Under no circumstances disassemble MADSEN Xeta. Contact your supplier. Parts inside MADSEN Xeta must
only be checked or serviced by authorized personnel.
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11 Service, cleaning and calibration

11.1 Service
Warning •For the sake of safety and in order not to void the warranty, service and repair of electro-medical equip-
ment should be carried out only by the equipment manufacturer or by service personnel at authorized workshops. In
case of any defects, make a detailed description of the defect(s) and contact your supplier. Do not use a defective
device.
11.2 Cleaning
The device
• Remove dust using a soft brush.
• Use a soft, slightly damp cloth with a small amount of mild detergent or approved non-caustic medical grade dis-
infectant wipes to clean the unit according to local infection control regulations.
Keep the unit away from liquids. Do not allow moisture inside the unit. Moisture inside the unit can damage the instru-
ment and it may result in a risk of electrical shock to the user or patient.
Accessories
These parts are in constant contact with your patients and should therefore be kept clean.
• Headphones
Use a non-alcohol based wipe (e.g. Audiowipe) to clean the headphones between patients.
• Eartips for Insert Earphones
The eartips are disposable and therefore should not be cleaned or re-used.
• Bone oscillator
Clean the bone oscillator between patients, e.g. with a non-alcohol based antibacterial wipe, such as Audiowipes.
Disposal
There are no special requirements for the disposal of eartips, i.e. they can be discarded according to local regulations.
11.3 Calibration
Annual calibration
The audiometer, headphones, bone oscillators, and sound field speakers must be calibrated once a year by your authorized
service department.
Caution •Note that calibration has been performed only on the transducers supplied! If you wish to use any other
transducer for testing with the device, please contact your local distributor first.
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11 Service, cleaning and calibration

12 Other references
For more information, see the online Help in OTOsuite, which contains detailed reference information about MADSEN
Xeta and the OTOsuite modules.
For OTOsuite installation instructions, see the OTOsuiteInstallation Guide, on the OTOsuite installation medium.
13 Technical specifications
13.1 MADSEN Xeta
Type identification
MADSEN Xeta is type 1067 from Natus MedicalDenmark ApS.
Channels
2 separate and identical channels
Pure tone frequencies
AC: 11 standard 125 - 8000 Hz
BC: 250 - 8000 Hz standard frequencies
Insert phones 125 - 8000 Hz standard frequencies
Accuracy: Better than 1 %.
Modulation
FM (Warble): 1 - 20 Hz in 1 Hz steps. Mod. width 1% - 25% in 1% steps
AM for SISI: 5, 4, 3, 1, 0.75, 0.50, 0.25 dB HL steps
Attenuator
5 dB HL step resolution over the entire range
Attenuator accuracy
In whole range: better than 3 dB HL
Between two consecutive attenuator positions:
5 dB HL step: better than 1 dB HL
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12 Other references

HL Range
Maximum output will be limited by the transducer.
AC: -10 to 120 dB HL at mid-frequencies
BC: -10 to 70 dB HL at mid-frequencies
Masking
Narrow band noise
Total harmonic distortion
Air < 2.5 %
Bone < 5 %
Selectable transducers
AC: TDH39 and insert phones, and insert phone mono.
BC: BC-1, B-71 (Mastoid)
Mono insert: Insert phone, mono
Transducer options depend on how MADSEN Xeta is calibrated.
Outputs
AC: 2 x mono jack, 1/4 "
BC: 1 x mono jack, 1/4 "
Mono insert: 1 x mono jack, 1/4 "
Interrupter
Normal: The signal is presented when the Present button is pressed.
Reverse: The signal stops when the Present button is pressed.
Pulsed: The signal is pulsed.
The pulse frequency can be adjusted in the range 0.25 to 2.5 Hz in 0.25 Hz steps.
Timed: The signal is presented for a preset period of time: 0.25 to 2.5 seconds, in
steps of 0.25 seconds.
Static force of transducer headbands
TDH 39: 4.5 N ± 0.5 N
B-71: 5.4 N ± 0.5 N
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13 Technical specifications

RS232 interface
Format: 8 data bit, 1 stop bit
Parity: Equal
Baud rate: 9600, 19200, 38400, 57600 Baud
Protocol: XON/XOFF
Transport and storage
Mode of operation: Continuous
Temperature: +10°C to +35°C
Air humidity: 30% to 90%, non-condensing
Air pressure 860 hPa to 1060 hPa.
(Operation at temperatures exceeding -20°C or +60°C may cause permanent damage.)
Operating environment
Mode of operation: Continuous
Temperature: +10°C to +35°C
Air humidity: 30% to 90%, non-condensing
Air pressure 860 hPa to 1060 hPa.
(Operation at temperatures exceeding -20°C or +60°C may cause permanent damage.)
Warm-up time
< 10 min.
Disposal
MADSEN Xeta can be disposed of as normal electronic waste, according to WEEE and local regulations.
Dimensions
Approx. 355 x 415 x 130 mm, 14 x 16.5 x 5.1 inches
Weight
Approx. 4 kg, 8.8 lb.
Power supply
Internal, 100 - 120 V AC, 200 - 240 V AC, 50/60 Hz
Power consumption
< 60 VA
Otometrics - MADSEN Xeta 15
13 Technical specifications

Fuses
T 1 A H/250 V
Standards
Audiometer: EN60645-1 and ANSI S3.6
Patient Safety: Complies with IEC 60601-1 3.1 edition:2012, Class I, Type B; IEC 60601-1-
6:2010; IEC 62366:2007;
CAN/CSA-C22.2 NO 60601-1:2014;
ANSI/AAMI ES60601-1 (2005) + AMD 1 (2012)
EMC: IEC 60601-1-2:2007
Miscellaneous
Software-adjustable contrast/brightness on display and LEDs
Integrated Talk Over microphone
13.2 Accessories
Standard accessories and optional accessories may vary from country to country - please consult your local distributor.
• TDH 39 headphones (Headband: HB-7, HB-8)
• ME-70 headphones
• HOLMCO headphones
• Otometrics insert phones - stereo/mono
• Bone oscillators: BC-1, B-71
• Sound field loudspeakers
• PA 210 power amplifier for free-field testing
• Patient Responder(s)
• Mains cable
• Connection cables
• Audiogram pad
• MADSEN XetaReference Manual
• MADSEN XetaUser Guide
13.3 Notes on EMC (Electromagnetic Compatibility)
• MADSEN Xeta is part of a medical electrical system and is thus subject to special safety precautions. For this reason,
the installation and operating instructions provided in this document should be followed closely.
• Portable and mobile high-frequency communication devices, such as mobile phones, may interfere with the func-
tioning of MADSEN Xeta.
16 Otometrics - MADSEN Xeta
13 Technical specifications

Guidance and manufacturer's declaration - electromagnetic emissions for all equipment and systems
MADSEN Xeta is intended for use in the electromagnetic environment specified below. The user of MADSEN Xeta should ensure that it is used in such an envir-
onment.
Emissions test Compliance Electromagnetic environment - guidance
RF emissions
CISPR 11
Group 1 MADSEN Xeta uses RF energy only for its internal function. There-
fore, its RF emissions are very low and are not likely to cause any
interference in nearby electronic equipment.
RF emissions
CISPR 11
Class A MADSEN Xeta is suitable for use in all establishments other than
domestic and those directly connected to the public low-voltage
power supply network that supplies buildings used for domestic
purposes.
Note: The emissions characteristics of this equipment make it suitable for use in industrial areas and hospitals (CISPR 11 class A). If it is used in a residential envir-
onment (for which CISPR 11 class B is normally required) this equipment might not offer adequate protection to radio-frequency communication services. The
user might need to take mitigation measures, such as relocating or re-orienting the equipment.
Guidance and manufacturer's declaration - electromagnetic immunity for all equipment and systems
MADSEN Xeta is intended for use in the electromagnetic environment specified below. The user of MADSEN Xeta should ensure that it is used in such an envir-
onment.
Immunity test IEC 60601
test level
Compliance level Electromagnetic environment - guidance
Electrostatic dis-
charge (ESD)
IEC 61000-4-2
+/- 6 kV contact
+/- 8 kV air
+/- 6 kV contact
+/- 8 kV air
Floors should be wood, concrete or ceramic tile. If floors are covered with syn-
thetic material, the relative humidity should be at least 30 %.
Power frequency
(50/60 Hz) magnetic
field
IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic fields should be at levels characteristic of a typical loc-
ation in a typical commercial or hospital environment.
UTis the AC mains voltage prior to application of the test level.
Guidance and manufacturer's declaration - electromagnetic immunity - for equipment and systems that are NOT life-supporting
MADSEN Xeta is intended for use in the electromagnetic environment specified below. The user of MADSEN Xeta should ensure that it is used in such an envir-
onment.
Immunity test IEC 60601
test level
Compliance level Electromagnetic environment - guidance
Otometrics - MADSEN Xeta 17
13 Technical specifications

Radiated RF
IEC 61000-4-3 150 kHz to 80 MHz outside ISM
bands a
3 V/m
80 MHz to 2.5 GHz
3 V/m Portable and mobile RF communications equip-
ment should be used no closer to any part of
MADSEN Xeta, including cables, than the recom-
mended separation distance calculated from the
equation applicable to the frequency of the trans-
mitter.
Recommended separation distance:
d = 1.2
d = 1.2 for 80 MHz to 800 MHz
d = 2.3 for 80 MHz to 2.5 GHz,
where Pis the maximum output power rating of
the transmitter in watts (W) according to the trans-
mitter manufacturer and d is the recommended
separation distance in metres (m).
Field 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 equip-
ment marked with this symbol:
Note 1: At 80 MHz and 800 MHz the separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and
people.
a. The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283
MHz; and 40.66 MHz to 40,70 MHz.
b. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz are intended to decrease the
likelihood that mobile/portable communications equipment could cause interference if it is inadvertently brought into patient areas. For this reason, an
additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in these frequency ranges.
c. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which MADSEN Xeta is used exceeds the applicable RF com-
pliance level above, the MADSEN Xeta should be observed to verify normal operation. If abnormal performance is observed, additional measures might be
necessary, such as reorienting or relocating MADSEN Xeta.
d. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
18 Otometrics - MADSEN Xeta
13 Technical specifications

Recommended separation distances between portable and mobile RF communications equipment and MADSEN Xeta
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz outside ISM bands
d = 1.2
80 MHz to 800 MHz
d = 1.2
800 MHz to 2.5 GHz
d = 2.3
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
1 1.2 1.2 2.3
10 3.8 3.8 7.3
100 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be estimated using the equa-
tion applicable to the frequency of the transmitter, where Pis 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 separation distance for the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and
people.
14 Definition of symbols
Electronic equipment covered by the Directive 2002/96/EC on waste electrical and electronic equipment
(WEEE).
All electrical and electronic products, batteries, and accumulators must be taken to separate collection at
the end of their working life. This requirement applies in the European Union. Do not dispose of these
products as unsorted municipal waste.
You can return your device and accessories to Natus MedicalDenmark ApS, or to any Natus
MedicalDenmark ApS supplier. You can also contact your local authorities for advice on disposal.
Consult user manual for warnings and cautions.
Follow instructions for use.
Consult instructions for use.
Otometrics - MADSEN Xeta 19
14 Definition of symbols

MEDICAL - General Medical Equipment as to electrical shock, fire and mechanical hazards only in accord-
ance with ANSI/AAMI ES60601-1 (2005) + AMD 1 (2012), IEC 60601-1-6, CAN/CSA-C22.2 No. 60601-1
(2014) and CAN/CSA-C22.2 No. 60601-1-6 (2011).
Complies with Type B requirements of IEC60601-1.
Suitable for alternating current only.
Power ON.
Power OFF.
The device is susceptible to electrostatic discharge.
Do not reuse.
Used in error message dialogs if software program fails. See the detailed information in the dialog box.
15 Warning notes
This manual contains information and warnings, which must be followed to ensure the safe performance of the devices and
software covered by this manual. Local government rules and regulations, if applicable, should also be followed at all times.
See Definition of symbols ►19 and General warning notes ►20.
15.1 General warning notes
1. This class of equipment is allowed in domestic establishments when used under the jurisdiction of a health care pro-
fessional.
2. Keep the unit away from liquids. Do not allow moisture inside the unit. Moisture inside the unit can damage the
instrument and it may result in a risk of electrical shock to the user or patient.
3. Do not use the instrument in the presence of flammable agents (gases) or in an oxygen-rich environment.
4. No parts may be eaten, burnt, or in any way used for purposes other than the applications defined in the Intended Use
section of this manual.
5. The device and any device to be connected which has its own power supply should be turned off before any con-
nections are established.
20 Otometrics - MADSEN Xeta
15 Warning notes