EN ISO 18563-1:2015

SLOVENSKI STANDARD
01-september-2015
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Non-destructive testing - Characterization and verification of ultrasonic phased array
systems - Part 1: Instruments (ISO 18563-1:2015)
Zerstörungsfreie Prüfung - Charakterisierung und Verifizierung der Ultraschall-
Prüfausrüstung mit phasengesteuerten Arrays - Teil 1: Prüfgeräte (ISO 18563-1:2015)
Essais non destructifs - Caractérisation et vérification de l'appareillage de contrôle multi-
élément par ultrasons - Partie 1 : Instruments (ISO 18563-1:2015)
Ta slovenski standard je istoveten z: EN ISO 18563-1:2015
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 18563-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2015
ICS 19.100
English Version
Non-destructive testing - Characterization and verification of
ultrasonic phased array equipment - Part 1: Instruments (ISO
18563-1:2015)
Essais non destructifs - Caractérisation et vérification de Zerstörungsfreie Prüfung - Charakterisierung und
l'appareillage de contrôle par ultrasons en multiéléments - Verifizierung der Ultraschall-Prüfausrüstung mit
Partie 1: Appareils (ISO 18563-1:2015) phasengesteuerten Arrays - Teil 1: Prüfgeräte (ISO 18563-
1:2015)
This European Standard was approved by CEN on 21 February 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18563-1:2015 E
worldwide for CEN national Members.

Contents Page
European foreword .3

European foreword
This document (EN ISO 18563-1:2015) has been prepared by Technical Committee CEN/TC 138 “Non-
destructive testing” the secretariat of which is held by AFNOR, in collaboration with Technical Committee
ISO/TC 135 "Non-destructive testing".
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2015, and conflicting national standards shall be withdrawn
at the latest by December 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 18563-1:2015 has been approved by CEN as EN ISO 18563-1:2015 without any modification.

INTERNATIONAL ISO
STANDARD 18563-1
First edition
2015-06-15
Non-destructive testing —
Characterization and verification of
ultrasonic phased array equipment —
Part 1:
Instruments
Essais non destructifs — Caractérisation et vérification de
l’appareillage de contrôle par ultrasons en multiéléments —
Partie 1: Appareils
Reference number
ISO 18563-1:2015(E)
©
ISO 2015
ISO 18563-1:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 General requirements of conformity . 3
6 Manufacturer’s technical specification for phased array ultrasonic phased
array instruments . 3
7 Performance requirements for ultrasonic phased array instruments .7
8 Group 1 tests . 9
8.1 Equipment required for group 1 tests . 9
8.2 Battery operated phased array instruments .10
8.2.1 Operating time .10
8.2.2 Stability against voltage variations .10
8.3 Stability tests .11
8.3.1 Stability after warm-up time .11
8.3.2 Stability against temperature .11
8.4 Display .12
8.4.1 General.12
8.4.2 Time base deviation .12
8.4.3 Highest digitized frequency .12
8.4.4 Screen refresh rate for A-scan presentations .13
8.5 Transmitter .13
8.5.1 Pulse repetition frequency .13
8.5.2 Output impedance .14
8.5.3 Time delay resolution .14
8.6 Receiver .15
8.6.1 Cross-talk between receivers .15
8.6.2 Dead time after the transmitter pulse .15
8.6.3 Dynamic range and maximum input voltage.16
8.6.4 Receiver input impedance .17
8.6.5 Time-corrected gain .17
8.6.6 Temporal resolution.18
8.6.7 Time delay resolution .19
8.6.8 Linearity of vertical display over the extreme frequency ranges of
the instrument .19
8.7 Monitor gate .20
8.7.1 General.20
8.7.2 Linearity of monitor gate amplitude .20
8.7.3 Linearity of monitor gate time-of-flight .21
8.7.4 Monitor gates with analogue outputs .21
8.8 Summation .23
8.8.1 General.23
8.8.2 Procedure .23
8.8.3 Acceptance criteria .24
9 Group 2 tests .24
9.1 Equipment required for group 2 tests .24
9.2 Visual inspection .24
9.2.1 Procedure .24
9.2.2 Acceptance criteria .24
9.3 Transmitter pulse parameters .24
ISO 18563-1:2015(E)
9.3.1 General.24
9.3.2 Transmitter voltage, rise time, and duration .24
9.3.3 Linearity of time delays .25
9.4 Receiver .26
9.4.1 General.26
9.4.2 Frequency response .26
9.4.3 Channel gain variation .27
9.4.4 Equivalent input noise .28
9.4.5 Gain linearity .28
9.4.6 Linearity of vertical display .29
9.4.7 Linearity of time delays .30
10 Figures .31
Bibliography .39
iv © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT), see the following URL: Foreword — Supplementary information.
ISO 18563-1 was prepared by the European Committee for Standardization (CEN), Technical Committee
CEN/TC 138, Non-destructive testing, in collaboration with ISO/TC 135, Non-destructive testing,
Subcommittee SC 3 Ultrasonic testing, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
ISO 18563 consists of the following parts, under the general title Non-destructive testing —
Characterization and verification of ultrasonic phased array equipment:
— Part 1: Instruments
— Part 3: Combined systems
An additional part on Probes is planned.
INTERNATIONAL STANDARD ISO 18563-1:2015(E)
Non-destructive testing — Characterization and
verification of ultrasonic phased array equipment —
Part 1:
Instruments
1 Scope
This part of ISO 18563 identifies the functional characteristics of a multichannel ultrasonic phased array
instrument used for phased array probes and provides methods for their measurement and verification.
This part of ISO 18563 can partly be applicable to ultrasonic phased array instruments in automated
systems, but then, other tests might be needed to ensure satisfactory performance. When the phased
array instrument is a part of an automated system, the acceptance criteria can be modified by agreement
between the parties involved.
This part of ISO 18563 gives the extent of the verification and defines acceptance criteria within a
frequency range of 0,5 MHz to 10 MHz.
The evaluation of these characteristics permits a well-defined description of the ultrasonic phased array
instrument and comparability of instruments.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 2400, Non-destructive testing — Ultrasonic testing — Specification for calibration block No. 1
EN 1330-4, Non-destructive testing — Terminology — Part 4: Terms used in ultrasonic testing
EN 12668-1, Non-destructive testing — Characterization and verification of ultrasonic examination
equipment — Part 1: Instruments
EN 16018, Non-destructive testing — Terminology — Terms used in ultrasonic testing with phased arrays
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1330-4, EN 12668-1, EN 16018,
and the following apply.
3.1
maximum number of channels that can be simultaneously activated
maximum number of transmitting and/or receiving channels which can be used for one shot
3.2
parallel phased array instrument
phased array instrument featuring a maximum number of channels that can be simultaneously activated
(3.1) equal to the number of channels in the instrument
EXAMPLE In a type 64/64 (or 64//), the number of channels that can be simultaneously activated is 64 and
the number of channels of the instrument is 64.
ISO 18563-1:2015(E)
3.3
multiplexed phased array instrument
phased array instrument featuring a maximum number of channels that can be simultaneously activated
(3.1) smaller than the number of channels in the instrument and which are controlled by an internal
multiplexing device
EXAMPLE In a type 16/64 multiplexed instrument, the number of channels that can be simultaneously
activated is 16 and the number of channels available is 64. See Figure 1.
3.4
time resolution of the phased array instrument
inverse of the maximum digitization frequency without processing
4 Symbols and abbreviated terms
Table 1 — Symbols and abbreviations
Symbol Unit Meaning
A % Minimum amplitudes measured on a screen
min
A % Maximum amplitudes measured on a screen
max
A
, A dB Attenuator settings used during tests
0 n
CT dB Cross-talk
f Hz Centre frequency for each frequency range
f Hz Upper frequency limit at −3 dB
u
f Hz Lower frequency limit at −3 dB
l
f Hz Frequency with the maximum amplitude in the frequency spectrum
max
f Hz Highest digitized frequency
h
Δf Hz Frequency bandwidth in each frequency range
f Hz Screen refresh rate
RR
FSH Full screen height
ΔG dB Channel gain variation
G dB Input signal dynamic range
D
G dB Instrument gain on channel i
i
H % Reference screen height
R
I A Amplitude of the maximum current that can be driven by the proportional gate
max
output
N Noise per root bandwidth for receiver input
in
V
Hz
R , R , R Ω Termination resistors
A B l
S dB Attenuator setting
Δt s Time increment
t s Time delay
t s Time to the start of distance amplitude curve
t s Dead time
t s Pulse duration
d
t s Time to the end of distance amplitude curve
final
2 © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Table 1 (continued)
Symbol Unit Meaning
t s Transmitter pulse rise time from an amplitude of 10 % to 90 % of peak
r
amplitude
t , t , s Transmitter or receiver time delay
Target 0 Target i
t , t , t , t
Pi P 0 difi dif
t , t s Temporal resolution
A1 A2
V , V V Pulse voltage amplitudes
A B
V V Receiver equivalent input noise
ein
V V Input voltage when measuring the receiver equivalent input noise
in
V V Output voltage modified when measuring the output impedance of the analogue
l
gate
V V Minimum input voltage of the receiver
min
V V Maximum input voltage of the receiver
max
V V Output voltage to get an indication at 80 % of FSH when measuring the output
O
impedance of the analogue gate
V V Voltage amplitude of the 50 Ω loaded transmitter pulse
Z Ω Output impedance of transmitter
Z Ω Output impedance of proportional output
A
5 General requirements of conformity
An ultrasonic phased array instrument complies with this part of ISO 18563 if it fulfils all of the following
requirements:
a) the ultrasonic phased array instrument shall comply with Clause 7;
b) a declaration of conformity shall be available, issued by either the manufacturer operating a certified
quality management system (e.g. in accordance with ISO 9001) or by an organization operating an
accredited test laboratory (e.g. in accordance with ISO/IEC 17025);
c) the ultrasonic phased array instrument shall carry a unique serial number;
d) manufacturer‘s technical specification corresponding to the instrument, which defines the
performance criteria in accordance with Clause 6, shall be available.
6 Manufacturer’s technical specification for phased array ultrasonic phased
array instruments
The manufacturer’s technical specification relative to a specific model of an ultrasonic phased array
instrument shall contain, as a minimum, the information listed in Table 2. This table specifies the
information which shall be supplied by the manufacturer in the instrument’s technical specification
(M = Measurement, OI = Other information). The values obtained from the tests described in Clause 7
shall be established as nominal values, with tolerances given as indicated.
ISO 18563-1:2015(E)
Table 2 — Technical characteristics to be shown in the instrument’s technical specification
Information Type of information Remarks
General features
Size OI Width (mm) × Height (mm) × Depth (mm)
Weight OI At an operational stage including all batter-
ies
Type(s) of power supply OI
Type(s) of instrument sockets OI Including the wiring diagram
Battery operational time M At fully charged new batteries
Number and type of batteries OI
Stability against temperature M
Stability after warm-up time M
Stability against voltage variations M
Temperature and voltage (mains and/or OI When a warm-up time is necessary, its
batteries) ranges in which the instrument duration shall be stated
operates in accordance with the technical
specification (operation and storage)
Form of indication given when a low OI
battery voltage takes the ultrasonic
phased array instrument performance
outside of specification
Pulse repetition frequencies (PRFs) M Minimum and maximum values
Maximum power consumption OI VA (volt-amps)
Protection grade OI
Environment OI For example: restriction of hazardous
substances (RoHS), explosive atmosphere
(ATEX), vibration, humidity
Multichannel configuration OI Number of channels controlled simultane-
ously and number of available channels
Extension of the number of channels by OI
interconnection of instruments
Available measurement units OI For example: mm, inches, %, dB, V
Display
Screen size and resolution OI
Range of sound velocities OI
Time base delay and depth OI
List of available views OI
Screen refresh rate for A-scan presenta- M
tions
Maximum digitization frequency without OI
processing
Digitization frequency with processing OI For example: interpolation
Digitizer vertical resolution OI In bits
Highest digitized frequency M
Time base error M
M   Measurement.
OI   Other information.
4 © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Table 2 (continued)
Information Type of information Remarks
Inputs/outputs
Signal unrectified output (i.e. radio OI
frequency, RF) and/or rectified available
on the output socket
Number and characteristics of logic and OI Including the wiring diagram
analogue control outputs
Number and characteristics of encoder OI Including the wiring diagram
inputs
Power input OI AC, DC, voltage range, power (W)
Available power supply for external OI Voltage, power
devices
Synchronization input/output OI
Beam forming
Maximum number of channels active OI
simultaneously
Maximum number of delay laws OI
Summation M
Transmitter
Number of transmitters available OI
simultaneously
Shape of transmitter pulse and where OI i.e. rectangular, unipolar, bipolar, arbitrary
applicable, polarity pulse
Transmitter voltage, rise time, fall time M
and duration
Output impedance M
Maximum time delay OI
Time delay resolution M
Linearity of time delays M
Possibility to apply different voltages on OI
each channel
Maximum power available per transmit- OI
ter
Receiver
Number of receivers available OI
simultaneously
Characteristics of the gain control, i.e. OI
range in decibels, value of increments
Characteristics of the logarithmic ampli- OI
fier
Input voltage at FSH OI
Maximum input voltage M
Linearity of vertical display M
M   Measurement.
OI   Other information.
ISO 18563-1:2015(E)
Table 2 (continued)
Information Type of information Remarks
Linearity of the vertical display over the M
extreme frequency ranges of the
instrument
Frequency response M
Dead time after transmitter pulse M
Equivalent input noise M
V
Hz
Dynamic range M
Input impedance M
Maximum time delay OI
Time delay resolution M
Time-corrected gain (TCG) M
Possibility to apply different gain values OI
on each channel
Cross-talk between receivers M
Linearity of time delays M
Gain linearity M
Channel gain variation M
Data acquisition
Transfer rate between the external OI
storage unit and the instrument
(type of link)
Maximum number of A-scans stored per OI A-scan characteristics shall be stated
second
Maximum number of C-scans stored per OI C-scan characteristics shall be stated
second
Maximum number of samples per A-scan OI
Storage capacity OI Mbytes
Gates
Number of gates OI
Threshold operation OI For example: coincidence or anticoincidence
Measurement mode OI For example: threshold, max, zero crossing
Synchronisation of gates OI For example: transmission pulse, first echo
Characteristics of gates OI Threshold, position, duration
Resolution of measurements OI
Trigger of warnings OI For example: number of sequences before
an alarm
Linearity of monitor gate amplitude M
Time-of-flight of the monitor gate M
Impedance of analogue output M
Linearity of analogue output M
M   Measurement.
OI   Other information.
6 © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Table 2 (continued)
Information Type of information Remarks
Influence of the measurement signal posi- M
tion in the analogue gate output
Rise, fall, and hold time of analogue gate M
output
Signal processing
Processing features OI For example: averaging, Fast Fourier
Transform (FFT), rectification, envelope,
compression, dimensional measurements
M   Measurement.
OI   Other information.
7 Performance requirements for ultrasonic phased array instruments
In order to fulfil the requirements of this part of ISO 18563, ultrasonic phased array instruments shall
be verified with the following two groups of tests:
— Group 1: Tests to be performed by the manufacturer (or his agent) on a representative sample of the
ultrasonic phased array instruments. High level measurement instruments are required for these tests.
— Group 2: Tests to be performed on every ultrasonic phased array instrument:
a) by the manufacturer (or his agent) prior to the supply of the ultrasonic phased array instrument
(zero point tests);
b) by the manufacturer, the owner, or a laboratory, at 12-month intervals, to verify the performance
of the ultrasonic phased array instrument during its lifetime;
c) following the repair of the ultrasonic phased array instrument.
Only basic electronic measurement instruments are needed for group 2 tests. By agreement between
the parties involved, these tests may be supplemented with additional tests from group 1.
A third group of tests for the combined system (ultrasonic phased array instrument and connected probes)
are specified in ISO 18563-3. During their lifetime, these are performed at regular intervals on site.
For ultrasonic phased array instruments marketed before the introduction of this part of ISO 18563,
continuing fitness for purpose shall be demonstrated by performing the group 2 (periodic) tests
every 12 months.
Following repair, all parameters which might have been influenced by the repair shall be checked using
the appropriate group 1 or group 2 tests.
Table 3 contains the tests to be performed on ultrasonic phased array instruments.
ISO 18563-1:2015(E)
Table 3 — List of tests for ultrasonic phased array instruments
Group 1 Group 2
Manufacturing test Periodic and repair test
Title of the test
Subclause Subclause
Visual inspection 9.2 9.2
Portable or battery operated instruments
Operating time 8.2.1
Stability against voltage variations 8.2.2
Stability
Stability after warm-up time 8.3.1
Stability against temperature 8.3.2
Display
Time base error 8.4.2
Highest digitized frequency 8.4.3
Screen refresh rate for A-scan presentation 8.4.4
Beam forming
Summation 8.8
Transmitter
Pulse repetition frequency 8.5.1
Output impedance 8.5.2
Time delay resolution 8.5.3
Transmitter voltage, rise time, and duration 9.3.2 9.3.2
Linearity of time delays 9.3.3 9.3.3
Receiver
Cross-talk between receivers 8.6.1
Dead time after the transmitter pulse 8.6.2
Dynamic range and maximum input voltage 8.6.3
Receiver input impedance 8.6.4
Time-corrected gain (TCG) 8.6.5
Temporal resolution 8.6.6
Time delay resolution 8.6.7
Linearity of vertical display over the 8.6.8
extreme frequency ranges of the instrument
Frequency response 9.4.2 9.4.2
Channel gain variation 9.4.3 9.4.3
Equivalent input noise 9.4.4 9.4.4
Gain linearity 9.4.5 9.4.5
Linearity of vertical display 9.4.6 9.4.6
Linearity of time delays 9.4.7 9.4.7
Monitor gate
Linearity of monitor gate amplitude 8.7.2
Time-of-flight of monitor gate 8.7.3
Impedance of analogue output 8.7.4.1
8 © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
Table 3 (continued)
Group 1 Group 2
Manufacturing test Periodic and repair test
Title of the test
Subclause Subclause
Linearity of an analogue output 8.7.4.2
Influence of the signal position within the 8.7.4.3
gate
Rise time, fall time, and hold time of ana- 8.7.4.4
logue output
8 Group 1 tests
8.1 Equipment required for group 1 tests
The equipment utilized to obtain the required information should not affect the characteristics of the
ultrasonic phased array instrument under consideration.
The equipment required for the group 1 tests on ultrasonic phased array instruments include the
following items or functions:
a) oscilloscope;
b) (50 ± 0,5) Ω non-reactive resistors;
c) non-reactive resistors with values R and R
A B;
d) standard 50 Ω attenuator with 1 dB steps and a total range of 100 dB. The attenuator shall have
a cumulative error of less than 0,3 dB in any 10 dB span for signals with a frequency less than or
equal to 15 MHz;
e) switching means;
f) arbitrary waveform generator, capable of producing gated bursts of sinusoidal signals;
g) protection circuit (see Figure 2);
h) impedance analyser;
i) environmental test chamber;
j) regulated DC power supply (for testing the performances of battery operated instruments);
k) phased array probe (2 MHz to 6 MHz);
l) reference block to generate a back wall echo (e.g. calibration block no. 1 according to ISO 2400).
All of the tests in group 1, except the test for stability against temperature (see 8.3.2), require electronic
means to produce the necessary signals. The characteristics and stability of the equipment used shall
be adapted to the tests.
Before the oscilloscope is connected to the transmitter of the ultrasonic phased array instrument, as
specified in some of the test procedures in this part of ISO 18563, it should be verified that the oscilloscope
will not be damaged by the high transmitter voltage.
ISO 18563-1:2015(E)
8.2 Battery operated phased array instruments
8.2.1 Operating time
8.2.1.1 Procedure
The operational time of the unloaded (without any probe connected) ultrasonic phased array instrument
using batteries only (i.e. the instrument should be disconnected from the main power supply) should be
measured with the following conditions:
— fully charged new battery(ies);
— ambient temperature between 20 °C and 30 °C;
— gain set to mid-gain position;
— if the instrument features a screen:
— display A–scan and S-scan presentations;
— brightness is set at mid-range.
When made possible by the characteristics of the instrument:
— pulse repetition frequency set to 1 kHz;
— 16 channels active simultaneously;
— 10 delay laws;
— pulse voltage set to 50 V;
— pulse width set to 100 ns;
— time base set to 50 µs.
In all other cases, set those parameters to their typical values. Parameters that have been modified shall
be specified by the manufacturer.
8.2.1.2 Acceptance criterion
The duration measured shall be higher than or equal to the duration specified by the manufacturer.
8.2.2 Stability against voltage variations
8.2.2.1 Procedure
The ultrasonic phased array instrument is powered by a regulated DC power supply. The voltage applied
is in the centre of the range specified for the use of the instrument.
Apply a nil delay law simultaneously to all available channels. Display the summed A-scan presentation
(e.g. using an array probe with centre frequency between 2 MHz and 6 MHz) and a test block to generate
a back wall echo.
The echo amplitude shall be set to 80 % of FSH and the time base shall be set so that the displayed signal
is at 50 % of the screen width, with a distance equal to or greater than 50 mm of steel for longitudinal
waves. During the test, precautions shall be taken to avoid coupling variations.
Observe the consistency of amplitude and position on the time base of the reference signal over the
range of operation of the batteries.
10 © ISO 2015 – All rights reserved

ISO 18563-1:2015(E)
If an automatic cut-off system or a warning device is fitted, decrease the mains and/or battery voltage
and note the signal amplitude at which the cut-off system or warning device operates.
8.2.2.2 Acceptance criteria
The amplitude and position of the reference signal shall remain constant within the limits stipulated in
the manufacturer’s technical specification.
Operation of the cut-off system or warning light (if fitted) shall occur before the reference signal
amplitude varies by more than ±2 % of FSH or the position on the time base changes by more than ±1 %
of the full screen width from the initial setting.
8.3 Stability tests
8.3.1 Stability after warm-up time
8.3.1.1 Procedure
Program the instrument with one active transmitter channel and one different active receiver channel.
Use the signal from the active transmitter channel as the trigger for the signal generator. Connect the
signal generator gated output to the active receiver channel. See Figure 3.
Set the instrument range to 50 mm for a velocity of 5 920 m/s, full rectification. Set the signal generator
to generate a burst of three cycles at 2 MHz to 6 MHz with a delay of 10 µs. Set the burst amplitude to
100 mV peak-to-peak. Adjust the instrument gain to set the viewed signal to 80 % of FSH.
Observe the amplitude and the position on the time base at 10 min intervals over a period of 30 min.
Carry out the test in an environment whose temperature is maintained within ±5 °C of the range specified
in the manufacturer’s technical specification of the ultrasonic phased array instrument. Ensure that the
mains or battery voltage is within the ranges required by the manufacturer’s specification.
8.3.1.2 Acceptance criteria
During a 30 min period following an allowance for warm-up time, in accordance with the manufacturer’s
specification
a) the signal amplitude shall not drift by more than ±2 % of FSH, and
b) the maximum shift along the time base shall be less than ±1 % of full screen width.
8.3.2 Stability against temperature
8.3.2.1 Procedure
Program the instrument with one active transmitter channel and one different active receiver channel.
Use the signal from the active transmitter channel as the trigger for the signal generator. Connect the
signal generator gated output to the active receiver channel. See Figure 3.
Set the instrument range to 50 mm for a velocity of 5 920 m/s, full rectification. Set the signal generator
to generate a burst of three cycles at 2 MHz to 6 MHz with a delay of 10 µs. Set the burst amplitude to
100 mV peak-to-peak. Adjust the instrument gain to set the viewed signal to 80 % of FSH.
The ultrasonic phased array instrument is placed in a climatic chamber and subjected to varying
ambient temperatures. The height and position of the reference echoes shall be read out and recorded at
maximum intervals of 10 °C over the temperature range specified by the manufacturer.
ISO 18563-1:2015(E)
8.3.2.2 Acceptance criteria
For each 10 °C variation of the temperature, the amplitude and the position of the reference echo shall
not drift by more than ±5 % of FSH and ±1 % of full screen width respectively.
8.4 Display
8.4.1 General
The tests described in the following subclauses are performed on one channel only.
8.4.2 Time base deviation
8.4.2.1 Procedure
This test compares the time base linearity of the ultrasonic phased array instrument with that of an
external calibrated generator.
Connect the instrument as shown in Figure 4. Set the pulse generator to produce a single-cycle sine wave,
with a frequency at the centre frequency, f , of the widest frequency range. Set the time base to minimum,
maximum, and mid-range position in turn. At each setting, adjust the trigger delay, the gain of the ultrasonic
phased array instrument, and the external calibrated attenuator to obtain a signal which is at least 80 % of
FSH at the centre of the time base. This step defines the time references of the pulse generator.
Vary the trigger delay of the pulse generator in increments smaller than or equal to 5 % of the screen width.
Record each delay and measure the instant corresponding to the location of the indication (leading edge
or maximum amplitude) on the ultrasonic phased array instrument.
For each measurement, calculate the difference between the time read on the ultrasonic phased array
instrument and the delay giv
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