Brain Products BrainAmp ExG MR Operating And Reference Manual

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Operating And Reference Manual

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BrainAmp MR
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BrainAmp MR
BrainAmp MR plus
BrainAmp ExG MR
Operating and Reference Manual
for use in an MR environment
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The reproduction, distribution and utilization of this document as well as the communication of its contents to
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For the latest version of this document, please visit www.brainproducts.com or contact your local distributor.
Published by Brain Products GmbH
Zeppelinstrasse 7
82205 Gilching
Germany
Phone: +49 (0) 8105 733 84 - 0
Fax: +49 (0) 8105 733 84 - 505
Web: www.brainproducts.com
Published on* September 29. 2016 Document version 019
*Valid until publication of a new version of this document.
© 2016 Brain Products GmbH
BrainAmp MR | Operating and Reference Maual for use in an MR environment
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BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
List of figures .................................................................................................................................................. 5
About this manual ........................................................................................................................................ 7
The structure of the manual ............................................................................................................................. 7
Who is the manual intended for? .................................................................................................................... 8
Conventions used in this manual .................................................................................................................... 8
Document revision history .............................................................................................................................. 9
Reporting errors and support .......................................................................................................................... 9
Acknowledgments ...................................................................................................................................... 11
Introduction ................................................................................................................................................ 13
Intended use ................................................................................................................................................. 14
Correct use .................................................................................................................................................... 14
Use together with other products and components ........................................................................................ 15
Chapter 1 Installation instructions for the conduct of combined EEG-fMRI measurements .............................. 17
1.1 Synchronizing the systems using the SyncBox ................................................................................ 17
1.2 Recording volume triggers (volume markers) using the trigger cable ............................................... 23
1.3 Conversion of optical trigger pulses ................................................................................................ 24
1.4 Functional test of the interfaces of the scanner and amplifier system .............................................. 25
Chapter 2 Preparing and operating the amplifier system in an MR environment ............................................... 27
2.1 Safety aspects of combined EEG-fMRI measurements .................................................................... 29
2.1.1 Recommended coil configuration for combined EEG-fMRI measurements (head transmitter coil vs. body
transmitter coil) ............................................................................................................................. 30
2.1.2 MR sequences and the safety of the test subject ............................................................................. 31
2.1.3 Protecting the amplifier in the MR environment ............................................................................... 33
2.2 Considerations on positioning the components for combined EEG-fMRI measurements .................. 35
2.3 Correct use of the connections to the amplifier from the test subject: BrainCap MR, electrode input box-
es and MR electrodes ..................................................................................................................... 39
2.3.1 EEG recordings using the BrainCap MR ........................................................................................... 39
2.3.2 Electromyographic recordings (EMG-fMRI) ....................................................................................... 40
2.3.3 Electrocardiographic recordings (ECG-fMRI) .................................................................................... 42
Contents
4
2.3.4 GSR-MR recordings (GSR-fMRI) ........................................................................................................ 45
2.4 Considerations on data quality for combined EEG-fMRI measurements ........................................... 47
2.5 Care and comfort of the test subject during combined EEG-fMRI measurements .............................. 50
2.6 Emergency measures ...................................................................................................................... 52
2.6.1 Emergency measures to release the test subject ............................................................................. 52
2.6.2 Measures in the event of an amplifier system malfunction or fault .................................................. 53
Appendix A Product identification ............................................................................................................................... 55
Appendix B Explanation of the markings on the products ........................................................................................ 57
Appendix C Phantom measurements in MR environments ....................................................................................... 59
Appendix D Using temperature measurements to verify that the study is set up safely ...................................... 61
Appendix E Guidelines on the safe conduct of combined EEG-fMRI measurements ............................................. 63
1 Head coil geometry ......................................................................................................................... 63
2 Further head coil characteristics .................................................................................................... 66
3 Stabilization of the test subject ...................................................................................................... 67
4 Sequences ...................................................................................................................................... 67
5 Static gradient field ....................................................................................................................... 68
6 Scanner types/manufacturers ........................................................................................................ 68
7 EEG amplifiers and accessories ..................................................................................................... 68
8 EEG cap .......................................................................................................................................... 79
9 Number of EEG channels ................................................................................................................. 79
10 Training of new personnel ............................................................................................................... 79
11 General rules of conduct ................................................................................................................ 80
12 Particular attention/supervision is required in the case of ............................................................. 80
Appendix F Elimination of errors and sources of interference ................................................................................. 81
Appendix G Recommended reading ............................................................................................................................ 83
General list of abbreviations ......................................................................................................................... 85
List of abbreviations for the cited MR sequences and methods .................................................................... 87
Subject index ............................................................................................................................................... 89
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BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
Chapter 1 Installation instructions for the conduct of combined EEG-fMRI measurements
1-1 Connections between the SyncBox Main Unit, SyncBox Scanner Interface, amplifier and scanner 19
1-2 SyncBox Scanner Interface with cables connected (top view) 20
1-3 SyncBox Scanner Interface (side view), yellow "PWR" LED (left) and "Input" port for connection to the
scanner (right) 21
1-4 SyncBox Scanner Interface (side view), green "Signal" LED (left) and "Output" port for connection to
the SyncBox Main Unit (right) 21
1-5 SyncBox Main Unit with cables connected (top view) 21
1-6 SyncBox Main Unit (side view), "Input" port for connection to the SyncBox Scanner Interface (left) and
"AUX" socket for peripheral components (right) 22
1-7 SyncBox Main Unit (side view), "AUX" socket for connection to the USB2 Adapter (left) and "USB"
socket for connection to the computer (right) 22
1-8 "Sync On" markers and (example) volume markers in the EEG data (Recorder) 25
Chapter 2 Preparing and operating the amplifier system in an MR environment
2-1 Ribbon cable with burnt area caused by incorrect cable routing (loop) 29
2-2 Schematic representation of an RF field in a body RF coil 30
2-3 Schematic representation of an RF field in a local RF coil 30
2-4 Incorrect handling: burnt-out amplifier board due to open channels 33
2-5 Positioning of the amplifier and the PowerPack on the scanner table in a local RF transmitter coil (head
coil) 36
2-6 Positioning of the amplifier and the PowerPack on a platform in the scanner bore in a local RF trans-
mitter coil (head coil) 37
2-7 Body transmitter coil, positioning of the amplifier and the PowerPack behind the scanner bore on a
non-magnetic surface 38
2-8 Schematic representation of the correct way to position the BrainAmp ExG MR, PowerPack and ExG
AUX Box for a combined EMG-fMRI measurement on the limbs 41
2-9 Attaching the ECG electrode to the thorax 43
2-10 Attaching the ECG electrode to the back 44
2-11 GSR-MR module (top view) 45
2-12 GSR-MR module with connection to ExG AUX Box (side view) 45
2-13 GSR-MR module with connections for the GSR-MR electrodes (side view) 46
2-14 Configuration of the Recorder workspace 48
2-15 Clamps on the connection cables of the amplifier and cap 52
List of figures
6 List of figures
Appendix A Product identification
Appendix B Explanation of the markings on the products
Appendix C Phantom measurements in MR environments
Appendix D Using temperature measurements to verify that the study is set up safely
D-1 Results of temperature measurement, Siemens TIM Trio with 12-channel head receiver coil and body
transmitter coil 62
Appendix E Guidelines on the safe conduct of combined EEG-fMRI measurements
E-1 Open head coil 63
E-2 Head coil adapted for EEG recordings 64
E-3 Head coil with side opening 65
E-4 Closed head coil 66
E-5 Stabilization of the test subject in the head coil 67
E-6 Positioning of the EEG amplifier at the head end of the scanner outside of the bore 69
E-7 Positioning of the EEG amplifier at the head end of the scanner inside the bore 69
E-8 Positioning of the ExG amplifier at the foot end of the scanner 70
E-9 Positioning of EEG and ExG amplifiers for parallel use 71
E-10 Taut, straight cable routing 71
E-11 No loops or kinks 71
E-12 Positioning of the EEG amplifier inside the scanner bore 72
E-13 Weighting down the EEG amplifier with sandbags 73
E-14 Positioning of the EEG amplifier and accessories for GSR-fMRI 74
E-15 Positioning of the GSR-MR module 74
E-16 Attachment of the GSR-MR electrodes 75
E-17 Positioning of the amplifier when the 3D Acceleration Module is used 76
E-18 Attachment of the EMG electrodes to the arm 77
E-19 Attachment of the EMG electrodes to the leg 77
E-20 Attachment of the ECG electrode 78
E-21 Attachment of the EOG electrode 79
Appendix F Elimination of errors and sources of interference
Appendix G Recommended reading
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BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
About this manual
This Manual describes how to use the BrainAmp MR, BrainAmp MR plus and BrainAmp ExG MR
amplifiers and their accessories
1
in an MR environment.
The manual forms an integral part of the amplifier system. It must be precisely adhered to in
order to ensure that the amplifier system is used as intended (see the combined Operating and
Reference Manual for the BrainAmp and BrainAmp MR series of amplifiers) and operated cor-
rectly and to guarantee the concomitant safety of test subjects, users and third parties. Make
sure that this manual is always available to users.
The amplifiers are operated using the BrainVision Recorder recording software. You will find a
detailed description of the hardware functions that are fully software controlled (impedance
measurement, DC offset correction, configuration of the digital ports, setting of the resolution
and configuration of the filters) in the User Manual for the Recorder.
The structure of the manual
The BrainAmp MR Operating and Reference Manual describes the use of the amplifier system
in an MR environment:
Chapter 1 describes the installation steps that are required if you only want to perform
combined EEG-fMRI measurements.
You will find a detailed description of the additional installation steps that have to be per-
formed in order to be able to operate the amplifiers in the BrainAmp Operating and Refer-
ence Manual for use in laboratory environment.
Chapter 2 contains stipulations on how to perform combined EEG-fMRI measurements
safely with the amplifier system.
Appendix C contains notes on how to perform phantom measurements.
Appendix D describes how to check the experimental setup using temperature measure-
ments.
In Appendix E, you will find guidelines intended to help you carry out your measurements.
Appendix F contains a list of the most frequent sources of problems and interference.
Appendix G contains a list of the recommended scientific literature.
Appendix B lists the markings applied to the products.
1. The amplifiers and the accessories supplied by Brain Products are referred to as the "amplifier sys-
tem" below.
8 About this manual
Topics covered by the Brain-
Amp Operating and Reference
Manual for use in laboratory en-
vironment.
For further information on the following points, please refer to the BrainAmp Operating and Ref-
erence Manual for use in laboratory environment which is available for download from our web
site at http://www.brainproducts.com/downloads.php:
Intended use
Additional installation steps that you must perform in order to be able to operate the am-
plifiers of the BrainAmp MR series
Maintenance and disposal
Terms of warranty
Product identification, relevant standards and legal notes
Technical data and conditions of use
Pinouts
Ordering codes
Who is the manual intended for?
The current manual is intended for physicians, medical experts and users working in the field
of psychological and neurological research. If the system is to be used in an MR environment,
knowledge of how to perform MR measurements safely is vital.
Conventions used in this manual
This manual uses the following typographical conventions:
Italic Italic text is used to identify menus, menu commands, dialog boxes, options,
the names of files and folders and the labels on the products. Italic font is
also used to highlight portions of running text.
Underscore
Underscored text indicates a cross-reference or a web address.
The blue dot indicates the end of a chapter.
9
This manual also uses the following symbols to help you find your way around:
The Personal injury symbol indicates that incorrect use of the products may
result in a health hazard to the test subject, the user and/or a third-party. In-
correct use means non-adherence to the stipulations set out in this manual.
The Damage to property symbol indicates that the incorrect use of the prod-
ucts may bring about a risk of damage to property.
The Stop symbol indicates that you should not carry out a particular action.
A note draws your attention to important (technical) information.
A cross-reference refers to another section or an external document that has
a bearing on the running text at this point.
A tip gives you advice, recommends a particular approach or draws your at-
tention to an interesting aspect.
Document revision history
57 modified Markings on the product (NRTL discontinued)
Reporting errors and support
We would ask you to report to us without delay any error you find in this manual, any fault in
the products or any malfunction that you observe when operating the products and any event
where a test subject, user or third party has been injured, however slightly, or could have been
injured. To do so, contact your dealer who can also advise you about general questions relating
to these products.
10
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BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
Acknowledgments
At this point, we should like to extend our very sincere thanks to Dr. David Carmichael (Univer-
sity College London) and Dr. Helmut Laufs (Johann Wolfgang Goethe-Universität Frankfurt am
Main) for their careful review of these Operating Instructions, their constructive comments and
valuable scientific expertise.
We should also like to thank Dr. Robert Störmer (Brain Products GmbH) for his commitment
and for contributing his expert knowledge during the authoring of these Operating Instructions
as well as Ms. Katja Wust (Brain Products GmbH) who handled the editorial aspects involved
in their production.
Finally, we should also like to thank our translators, Phil White and Tim Pownall, for their ex-
cellent work.
Alexander Svojanovsky,
General Manager, Brain Products GmbH
12
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BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
Introduction
The BrainAmp MR, BrainAmp MR plus and BrainAmp ExG MR amplifiers are easy to use, com-
pact and robust. Together with their accessories, the amplifiers form a complete, integrated
system. When used correctly, according to its intended purpose, the amplifier system guaran-
tees excellent data quality and the very highest level of comfort and safety for users and test
subjects alike.
When our BrainAmp MR series of amplifiers was launched in 2000, it undoubtedly represented
a technical milestone. Over the years, combined measurement of EEG and MR data became in-
creasingly widespread in the field of neurophysiological research. Initially the domain of a few
very technically oriented specialists who were implementing niche applications with the am-
plifier system, combined EEG-fMRI measurements now rank among the established methods
in the fields of neurophysiology and psychophysiology. A large number of neuroscientists are
successfully using laboratory paradigms in an MR environment and MR specialists are leverag-
ing the value of the primary MR applications by the addition of electrophysiological measure-
ments. The current manual has been written for this target group.
This manual is the result of many years of experience in using our amplifier system profession-
ally. They reflect the dramatic changes that have affected MR technology over the past years.
The use of body transmitter coils in place of head transmitter coils and the use of ever greater
field strengths are but two examples. The manual therefore not only describes the functions
and use of the components that make up the complete system. It is, above all, also intended
to provide users with safety guidelines for preparing and performing combined measurements
in MR scanners.
For notes on the intended use of the amplifier system, please refer to the BrainAmp Operating
and Reference Manual for use in laboratory environment which is available for download from
our web site under the following link: http://www.brainproducts.com/downloads.php.
14
Intended use
The components of the BrainAmp family are intended to be used for acquiring neuro-/electro-
physiological signals (e.g. EEG, EMG, ECG, EOG or signals from other approved sensors) in the
context of non-medical applications in order to carry out fundamental or applied research on
the basis of neurophysiological methodology and data.
In particular, the acquisition of invasive EEG signals is permitted if
the acquisition is performed outside the MR environment,
the BrainAmp components are powered by the PowerPack (rechargeable battery),
no other product is electrically connected with the test subject at the same time, and
no simultaneous electrical stimulation is used.
Invasive electrodes must not be used for recording ECG signals and polygraphic signals with
the BrainAmp components.
The components of the BrainAmp family are not medical devices. Use for diagnosis, therapy,
monitoring of vital physiological processes (such as cardiovascular functions) or other medical
purposes is expressly forbidden.
Correct use
The components of the BrainAmp family are permitted to be used by users in the psychological
and neurophysiological research area as well as physicians and medical experts for non-med-
ical applications.
The components of the BrainAmp family are not permitted to be used by unqualified persons
(e.g. laymen), persons who cannot read (e.g. due to visual impairment) or understand (e.g. due
to a lack of language skills) the manual.
The components of the BrainAmp family are permitted to be used in the following environ-
ments: hospitals, clinics, other medical environments, research institutes and other non-med-
ical environments (e.g. at home), provided that all the other stipulations regarding the correct
use are met and that the products are used in accordance with its intended use.
The components of the BrainAmp family are not permitted to be used in the following environ-
ments:
vicinity of explosive gases as may be the case in operating theaters, for example,
oxygen enriched atmospheres,
15
underwater (e.g. sea, swimming pool, bath tub) or in environments in which significant
amounts of water could enter the components of the BrainAmp family (e.g. under shower,
under water-tap).
The components of the BrainAmp family are permitted to be used for healthy and sick adults,
children and animals.
Irrespective of any liability on the part of the manufacturer, the relevant national stipulations
for operators and other relevant national legislation must be observed.
The user is solely liable for any risks to subjects associated with the investigation, if the prod-
uct is not used in accordance with the correct use described.
Use together with other products and components
The components of the BrainAmp family may be combined with the following products and
components:
For use in and outside of MR scanner rooms:
Product Manufacturer
GSR-MR Module Brain Products GmbH
RespirationBelt MR Brain Products GmbH
3D Acceleration Sensor Brain Products GmbH
ExG AUX Box Easy Cap GmbH
BrainCap MR
(passive Ag/AgCl EEG electrodes/caps for MRI)
Easy Cap GmbH
Electrode gel or paste Easy Cap GmbH
(others on request)
MR scanner
a
a. MR scanner room only.
Siemens, GE, Philips, Bruker
16
In addition to this general overview of the permitted combinations, users must also check that
all the conditions applicable to the product in question (e.g. relating to MR compatibility) are
fulfilled for the specific combination and specific application (definition of purpose and in-
tended use).
If users combine products other than those listed here then they are responsible for ensuring
the safety of test subjects, operating personnel and the environment. If the product data does
not immediately make it clear that products can be combined (connected) without danger then
the user must contact the relevant manufacturers to ensure that the required safety of all the
products involved is not compromised by the intended connection.
Not for use in MR scanner rooms
Product Manufacturer
Passive Ag/AgCl EEG electrodes/caps that are not designed for
use in MRI (e.g. Multitrodes/BrainCap)
EasyCap GmbH
(others on request)
actiCAP active EEG electrodes (incl. SplitterBox and ControlBox) Brain Products GmbH
Electrode Input Box EIB 64 (32 and 64 referential channels) Easy Cap GmbH
ExG Input Boxes (with 16 bipolar ExG channels) Easy Cap GmbH
MOVE (transmitter and receiver) Brain Products GmbH
StimTrak Brain Products GmbH
Temperature sensor Becker Meditec
TriggerBox & TriggerBox Extension Brain Products GmbH
Photo sensor Brain Products GmbH
Respiration Belt Brain Products GmbH
Software (on a computer [not to be located in MR scanner room])
Product Manufacturer
BrainVision Recorder Brain Products GmbH
BrainVision RecView Brain Products GmbH
actiCAP ControlSoftware Brain Products GmbH
Requirements to the computer (not to be located in MR scanner room)
The computer to which you connect the amplifier (via the USB adapter) must fulfill the IEC
60950-1 or EN 60950.
17
BrainAmp MR Operating and Reference Manual for use in MR environment | Version 019 | September 29, 2016
Chapter 1 Installation instructions for the conduct of combined EEG-
fMRI measurements
This chapter describes the installation steps that are required if you only want to perform com-
bined EEG-fMRI measurements. These mainly relate to the establishment of the interfaces to
the scanner. On the one hand, these interfaces synchronize the systems using the SyncBox
and, on the other, serve to allow simultaneous recording of volume triggers provided by the
scanner.
You will find a detailed description of the additional installation steps that have to be per-
formed in order to be able to operate the amplifier system in the BrainAmp Operating and Ref-
erence Manual for use in laboratory environment. (This also indicates the installation
procedure to be followed if you only want to use your MR amplifier under laboratory condi-
tions.) This is available for download from our web site at http://www.brainproducts.com/
downloads.php.
The amplifiers are operated using the BrainVision Recorder recording software. Make sure that
the most recent version of the Recorder is installed on your computer. If you need it, the most
recent version can be downloaded from our web site under the link http://www.brainprod-
ucts.com/downloads.php.
You will find information on
the software configuration for
the SyncBox in the Recorder
User Manual.
The technical data for the
SyncBox can be found in the
BrainAmp Operating and Ref-
erence Manual for use in lab-
oratory environment.
1.1 Synchronizing the systems using the SyncBox
The SyncBox is used in order to synchronize the sampling rate of the amplifier with the scanner
clock system. The aim is to achieve phase synchronicity between the two clock systems. Only
in this way is it subsequently possible to achieve optimum correction of the artifacts in the EEG
data that are caused by the scanner.
The SyncBox system comprises the SyncBox Main Unit (see Figure 1-5 on page 21) and the Syn-
cBox Scanner Interface (interface between the Main Unit and the MR scanner, see Figure 1-2 on
page 20).
The SyncBox Scanner Interface directly receives pulses coming from the scanner's gradient
clock board. It is equipped with two BNC connector plugs. (Siemens scanners do not use BNC
connectors and require a special adapter that is supplied with the SyncBox.)
The SyncBox system is not suitable for use in an MR environment. You must therefore
always use the SyncBox Main Unit and the SyncBox Scanner Interface outside the scan-
ner room.
Always route the cables to the SyncBox Main Unit and the SyncBox Scanner Interface outside
the scanner room.
A physical connection must be established between the SyncBox Scanner Interface and a suit-
able clock signal output from the scanner in order to use the SyncBox.
18 Chapter 1 Installation instructions for the conduct of combined EEG-fMRI measurements
The SyncBox Scanner Interface galvanically isolates the SyncBox Main Unit from the scanner
in order to prevent any negative impact on the scanner clock system. Nevertheless, as the op-
erator of the scanner, you must obtain the scanner manufacturer's official approval for estab-
lishing a connection of this type as well as approval of the selected clock signal output before
using the SyncBox system. Certificates from scanner manufacturers are available on request.
Installing the recording soft-
ware
You require Version 1.10 or higher of the Recorder in order to operate the SyncBox system. If
this version is not installed on your computer, install the most recent version of the Recorder
before connecting the SyncBox to the computer.
It is neither necessary nor recommended that you connect the SyncBox Main Unit to the com-
puter while you are installing the Recorder.
Connecting the SyncBox to the
scanner and the amplifier
Proceed as follows to install the SyncBox system:
1 Connect the SyncBox Main Unit to the computer using the USB cable supplied.
Note that your computer must be equipped with a USB 2.0 port. The SyncBox will not func-
tion with a USB 1.0 or USB 1.1 port.
2 The computer detects the SyncBox using the Windows® plug-&-play function and informs
you that it has detected a new hardware component.
3 Allow the installation program to search for a suitable driver, which is located in the folder
C:\Windows\System32\Setup\Brain Products\BrainAmp\.
4 The driver is installed automatically.
Note that Windows® requires that the driver is re-installed for each USB port the first time
that the SyncBox is used on a different port.
Figure 1-1
shows a diagram of the connections between the SyncBox Main Unit, SyncBox Scan-
ner Interface, amplifier and scanner.
Synchronizing the systems using the SyncBox 19
Figure 1-1. Connections between the SyncBox Main Unit, SyncBox Scanner Interface, amplifier and scanner
20 Chapter 1 Installation instructions for the conduct of combined EEG-fMRI measurements
You will also find instructions
for connecting the SyncBox
on our web site at http://
www.brainproducts.com/
downloads.php ("How to Set-
Up the SyncBox").
The SyncBox is supplied with a short and a long 50 Ohm coaxial cable that you can use to con-
nect the SyncBox system to the scanner. Proceed as follows:
1 Connect one end of the short 50 Ohm coaxial cable to the clock signal output of the scan-
ner.
2 Connect the other end of the short 50 Ohm coaxial cable to the Input port of the SyncBox
Scanner Interface (see Figure 1-3
).
3 Connect one end of the long 50 Ohm coaxial cable to the Output port of the SyncBox Scan-
ner Interface (see Figure 1-4).
4 Connect the other end of the long 50 Ohm coaxial cable to the Input port of the SyncBox
Main Unit (see Figure 1-6
).
When the connection to the SyncBox Main Unit is established, the PWR LED on the Output
port of the SyncBox Scanner Interface lights up green. The SyncBox Scanner Interface is
now ready for operation.
5 The SyncBox Main Unit has a number of connectors on either side. Connect the BNC cable
from the SyncBox Scanner Interface to the 50 Ohm BNC connector labeled Input (see
Figure 1-6
).
Next to the BNC Input port, there is a 15-pin HD D-Sub output labeled AUX.
The Signal LED is also on this side of the SyncBox Main Unit. It lights up yellow when the
SyncBox Main Unit receives a signal from the SyncBox Scanner Interface.
6 On the other side of the SyncBox Main Unit there are two ports and the PWR LED (see
Figure 1-7
). The AUX port is the counterpart to the HD D-Sub output labeled AUX. Connect
this port to the AUX output of the USB2 Adapter using the supplied short cable with two 15-
pin HD D-Sub plugs. This connection is required for SyncBox operation since the SyncBox
Main Unit and SyncBox Scanner Interface are supplied with power via this cable. The clock
signal generated in the SyncBox Main Unit for the amplifier is also transferred to the USB2
Adapter via this cable.
7 Finally, connect the USB port of the SyncBox Main Unit (see Figure 1-7
) to the computer us-
ing the USB cable supplied.
Figure 1-2. SyncBox Scanner Interface with cables connected (top view)
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