Cambridge Research Systems MR Confon Starter f MKII+ User Manual
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Cambridge Research Systems MR Confon Starter f MKII+ User Manual

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MR Confon Starter f MKII+ User Guide
Version R01 June 2017
Cambridge Research Systems Limited
80 Riverside
Sir Thomas Longley Road
Rochester
Kent
ME2 4BH
England
www.crsltd.com

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  • Page 1 MR Confon Starter f MKII+ User Guide Version R01 June 2017 Cambridge Research Systems Limited 80 Riverside Sir Thomas Longley Road Rochester Kent ME2 4BH England www.crsltd.com...
  • Page 2 MR Confon Starter f MKII+ User Guide Revision Number Date Description D POLYMENOPOULOS; 06/06/2016 First Issue S ELLIOTT 071-CRS-N3001-R01...

  • Page 3: Table Of Contents

    MR Confon Starter f MKII+ User Guide Table of Contents Introduction ..........................3 Symbols ................................ 3 Starter f MKII+ Components ....................4 Headphones .............................. 5 Amplifier .............................. 7 BNC Connectors ............................ 8 RF Filter Elements ........................... 9 Technologist Microphone ........................ 1 0 Filter Box .............................. 1 0 Desktop Speakers .......................... 1 1 Analogue to Digital Converter ...................... 1 2 Cables ................................. 1 3 Memory Foam Cushions .

  • Page 4: Introduction

    MR Confon Starter f MKII+ User Guide Introduction Thank you for purchasing the MR Confon Starter f MKII+ MRI Audio System. The equipment delivers high-fidelity acoustic stimuli for fMRI while also attenuating scanner noise. Electro-dynamic driver technology uses the magnetic field of the MRI scanner to drive the headphone membranes.

  • Page 5: Starter F Mkii+ Components

    MR Confon Starter f MKII+ User Guide Starter f MKII+ Components The Starter f MKII+ package is shipped with the following components: Headphone(s) with integrated BNC cable Memory foam cushions RF Filter elements (BLP 1.9+) BNC connectors Amplifier and power supply Technologist microphone Desktop speakers Stereo filter/Transformer box...

  • Page 6: Headphones

    MR Confon Starter f MKII+ User Guide Headphones The Starter f MKII+ package includes one or more pairs of MR Safe headphones and/or earbuds. Model HP PI US 03 The HP PI US headphone features an ultra-slim design that accommodates most adult participants in any head coil.
  • Page 7 MR Confon Starter f MKII+ User Guide MR Confon headphones and earbuds are available in a variety of sizes and cable routing arrangements to suit different head coil designs. Some designs only work inside the bore of the MRI scanner. Please refer to the table below for more information about other available headphones.

  • Page 8: Amplifier

    MR Confon Starter f MKII+ User Guide Amplifier The Starter f MKII+ amplifier is MR Unsafe and should not be installed in the MRI room. The Starter f MKII+ amplifier can drive headphones, external speakers, and supports an optional headcoil-mounted noise-cancelling microphone. It has a digital I/O interface for direct integration with the MRI scanner.

  • Page 9: Bnc Connectors

    MR Confon Starter f MKII+ User Guide BNC Connectors BNC connectors are MR-Conditional because they contain ferromagnetic material. Connectors must be securely fastened, while any connectors not used should be removed from the MRI room. As each MRI scanner installation is slightly different, the following BNC connectors are supplied to aide BNC cable connection in the MRI and Technologist rooms.

  • Page 10: Rf Filter Elements

    MR Confon Starter f MKII+ User Guide RF Filter Elements The filter elements are MR-Conditional because they are made from BNC connectors which contain ferromagnetic material. BNC connectors that do not make up the filter elements should be removed from the MRI room. All filter elements in the MRI room must be securely fastened.

  • Page 11: Technologist Microphone

    MR Confon Starter f MKII+ User Guide Technologist Microphone The Technologist microphone is MR Unsafe and should not be installed inside the MRI room. The Technologist microphone connects direct to the Starter f MKII+ amplifier and is used to inform and direct participants during a scanning session. Figure 7 : Technologist Microphone For more information on how to connect the Technologist microphone to the Starter f MKII+ amplifier, see Connecting the Microphone on page 20 of...

  • Page 12: Desktop Speakers

    MR Confon Starter f MKII+ User Guide Figure 8 : Filter Box For more information about connecting the Filter Box see Connecting to the Filter Box on page 17 of Control Room Assembly. Desktop Speakers The desktop speakers are MR Unsafe and should not be installed inside the MRI room.

  • Page 13: Analogue To Digital Converter

    MR Confon Starter f MKII+ User Guide Analogue to Digital Converter The Analogue to Digital Converter is MR Unsafe and should not be installed inside the MRI room. The Analogue to Digital Converter takes analogue signals from audio sources such as computers, iPhones, iPads, CD, DVD and other media players, and turns them into digital/optical signals to send to the amplifier.

  • Page 14: Cables

    MR Confon Starter f MKII+ User Guide Cables BNC cables are colour coded using white connectors for the left audio channel and red for the right audio channel. Cables 1-10 are MR Unsafe. They should not be installed inside the MRI room.
  • Page 15 MR Confon Starter f MKII+ User Guide Cable 7 connects conventional analogue audio sources to the Analogue to Digital Converter (for example: computers, cell phones and media players). Figure 12: Stereo Audio Cable Cable 8 connects the desktop monitor speakers to the amplifier. Figure 13 : Speaker Cable Cable 9 is an optical cable that connects the Analogue to Digital Converter to the amplifier or, if a digital audio source is used, the audio source and the...

  • Page 16: Memory Foam Cushions

    MR Confon Starter f MKII+ User Guide Cable 10 is the headphone cable and is the first part of the cable setup that connects the amplifier to the headphones. Figure 15 : Headphone Cable Memory Foam Cushions Memory foam cushions are MR Safe and are used inside the MRI room. Where space permits, soft, memory foam cushions can be inserted between the head and contact points of the coil to provide even better isolation, reduce bone conduction and improve participant comfort...

  • Page 17: Control Room Assembly

    MR Confon Starter f MKII+ User Guide Control Room Assembly Starter f MKII+ Amplifier Setup The amplifier does not need any assembly and is ready to run. Set the amplifier at the desired location, connect the power cable and turn it on. When choosing a location for the amplifier, take into consideration: •...

  • Page 18: Connecting To The Filter Box

    MR Confon Starter f MKII+ User Guide Select Cables 1 and 4. Connect them to the headphone Cable 10 as shown in Figure 19. Figure 19 : Connecting to the amplifier Connecting to the Filter Box Make sure you are connecting the Cables to the correct side of the Filter Box.

  • Page 19: Connecting The Desktop Monitor Speakers

    MR Confon Starter f MKII+ User Guide Use Cables 3 and 6 to connect the Filter Box to the RF Filter Panel as shown in Figure 21. If the RF Filter Panel does not already have a pair of unused bulkhead BNC connectors installed, then arrange for the Panel to be modified with the set of BNC bulkhead connectors that are included in the package.
  • Page 20 MR Confon Starter f MKII+ User Guide The insulated wire is inserted into the red input, and the braided wire into the black input. Push down on the plastic flaps to insert the wires into their respective connectors as shown in Figure 23. Figure 23 : Rear Speaker Detail Figure 24 : Rear Speaker installed on the Starter f MKII+ amplifier The final connection layout will look like Figure 24 (the second speaker not...

  • Page 21: Connecting The Microphone

    MR Confon Starter f MKII+ User Guide Connecting the Microphone The Technologist microphone connects to the amplifier’s Desk Mic port. Figure 25: Installing the Technologist microphone Connecting Patient Microphone (optional) If the optional bi-directional microphone has been ordered, it will connect to the input labelled IN 4.

  • Page 22: Analogue Audio Setup

    MR Confon Starter f MKII+ User Guide Analogue Audio Setup If you want to connect an analogue audio source to the Starter f MKII+ amplifier, you will need to use the supplied Analogue to Digital Converter. Use the Cable 7 to connect your analogue audio source to the Analogue to Digital Converter and the Cable 9 to connect the Analogue to Digital Converter to the amplifier.

  • Page 23: Audiofile Setup

    MR Confon Starter f MKII+ User Guide AudioFile Setup Should it be necessary to connect the AudioFile USB sound processor to your amplifier, you may do so at this point. If not, please skip this section. Figure 28 : The AudioFile AudioFile supports two different modes of operation.
  • Page 24 MR Confon Starter f MKII+ User Guide To boot AudioFile into USB Audio mode, insert the AudioFile SD card in your computer’s SD slot and open the Config.xml file in the card’s Firmware folder using the Windows Notepad utility. In the Config.xml file, locate the “Entry DeviceType”...

  • Page 25: Mri Room Assembly

    MR Confon Starter f MKII+ User Guide MRI Room Assembly Follow the steps in this section to install the headphones. Use only MR Safe components in the MRI Room. Headphones The red BNC connector corresponds to right audio channel, while the white BNC connector corresponds to the left audio channel.
  • Page 26 MR Confon Starter f MKII+ User Guide Figure 31 : Filter Elements (Disassembled) Depending on the configuration of the MRI room, the Filter Elements can be rearranged with the help of extra BNC connectors. The RF filter is bi-directional, facilitating rearrangement of the filter element. For example, adding a 90 degree connector to the base filter element will create design shown in Figure 32.

  • Page 27: Starter F Mkii+ Amplifier Quick Reference Sheet

    MR Confon Starter f MKII+ User Guide Starter f MKII+ Amplifier Quick Reference Sheet The Amplifier Figure 33 : The amplifier (rear panel) Figure 34 : The amplifier (front panel) 071-CRS-N3001-R01...

  • Page 28: Technologist Microphone 2

    MR Confon Starter f MKII+ User Guide The Starter f MKII+ amplifier features a variety of buttons, dials and connection ports. Two LCD displays provide report the current status of the device. Rear panel interface: A: Optical Outputs B: fMRI mode In C: Port not used.

  • Page 29: Technologist Microphone

    MR Confon Starter f MKII+ User Guide Technologist Microphone The Technologist microphone features two communications buttons – a Talk and a Second Channel button. While the Talk button is pressed, the Technologist can communicate with the participant. During this time, all other audio sources are muted. The Second Channel button is currently not used.

  • Page 30: Getting Started

    MR Confon Starter f MKII+ User Guide Getting Started Press the On/Off button at the rear of the amplifier to turn on the Amplifier and Technologist Microphone. Changing the Amplifier Mode The amplifier has two modes of operation: Entertainment Mode: includes various features to enhance audio, like dynamic compression, remote volume control, priority input and trigger dependent functions.
  • Page 31 MR Confon Starter f MKII+ User Guide fMRI Mode: In this mode, the Entertainment Mode features are disabled and the right LCD indicates the source (SRC) as IN STIM. This corresponds to the IN STIM on the rear of the amplifier. Figure 37 : fMRI Mode connection detail To switch between these two modes, press the Start button.
  • Page 32 MR Confon Starter f MKII+ User Guide Adjusting the Balance on the Headphones By default, the balance dial adjusts the balance on the patient headphones. While adjusting the balance dial, the “MUSIC-VOL” level on the left-hand LCD ranges from MUTE L to MUTE R (Mute Left to Mute Right). Adjusting the Volume of the Standard Microphone The volume is adjusted by pressing down on the “Talk”...

  • Page 33: Safety Warnings

    DO NOT ATTEMPT TO DISMANTLE any part of the Starter f MKII+ package. It contains no user serviceable components, refer all servicing to Cambridge Research Systems. Cleaning Clean external components with damp cloth only. Do NOT allow fluids to enter any of the components.

  • Page 34: Dimensions

    Length: 27 cm (approx. 10.6 in) Weight: 3.75 kg (approx. 8.27 lbs) Safety Conformance EN60601-1 Ed 3 Type B Equipment Class 1 Contact Cambridge Research Systems Limited 80 Riverside, Sir Thomas Longley Road Rochester, Kent ME2 4BH United Kingdom Telephone: +44 1634 720707 Website: www.crsltd.com...

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