Cambridge Research Systems MR Confon Starter f MKII+ User Manual Download Page 31

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MR Confon Starter f MKII+ User Guide

071-CRS-N3001-R01

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. Don’t forget to

connect the optical cable to the correct optical input as indicated by each mode.

Adjusting the Volume on the Headphones

By default, the volume dial adjusts the sound on the patient headphones. While

adjusting the volume dial, the “MUSIC-VOL” level displayed on the left LCD

ranges from MUTE to +24.

Summary of Contents for MR Confon Starter f MKII+

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 071 CRS N3001 R01 1 Revision Number Date Who Description R01 06 06 2016 D POLYMENOPOULOS S ELLIOTT First Issue ...

Page 3: ...er f MKII Amplifier Setup 16 Connect Headphone Cable 16 Connecting to the Filter Box 17 Connecting the Desktop Monitor Speakers 18 Connecting the Microphone 20 Connecting Patient Microphone optional 20 Analogue Audio Setup 21 AudioFile Setup 22 MRI Room Assembly 24 Headphones 24 Filter Elements 24 Starter f MKII Amplifier Quick Reference Sheet 26 The Amplifier 26 Technologist Microphone 28 Getting...

Page 4: ...th automated synchronous triggering capabilities to give you the controls you need for rigorous multimodal EEG fMRI studies Symbols This manual contains international MR symbols as well as symbols to aide in general handling and installation of the equipment MR SAFE These items can go into the MRI room No displacement with any field strength of any MRI scanner MR CONDITIONAL These items must only ...

Page 5: ...grated 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 Analogue to Digital Converter 2x5m and 2 5m red and white BNC cables Nos 1 3 Nos 3 6 Stereo audio cable No 7 Speaker cable No 8 TOSLINK optical cable No 9 XLR to BNC adapter Headphone cable No 10 ...

Page 6: ... 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 They use piezoelectric technology which allows them to work inside and outside the MRI room Figure 1 Model HP PI US 03 ...

Page 7: ...l foam cushion set 26mm thick Compatible with Siemens 8 and 12 channel head coils HP SIE 01 Special version of HP SI 01 with additional piezo drivers Can be used inside or outside the scanner 32mm thick Available for Philips and GE scanners HP VS 01 Smaller version of HP SI 01 20mm thick Optimised for Philips and GE 32 channel head coils Also for use with 8 channel head coil and thick foam cushion...

Page 8: ...ounted noise cancelling microphone It has a digital I O interface for direct integration with the MRI scanner Figure 2 Starter f MKII Amplifier The amplifier is shipped with its own power supply and region specific plug as shown in Figure 3 Plug the power cable into the rear of the amplifier For the location of the Power In Port see The Amplifieron page 26 of the Starter f MKII Amplifier Quick Ref...

Page 9: ...ld 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 Figure 5 BNC Connectors In brief Inline couplers connect two male BNC cables Male couplers connect two female BNC cables T piece and Y connectors split the BNC cable signal 90 Degree connectors are used to ro...

Page 10: ... may not need to use all the supplied BNC connectors that are included in the package It is strongly advised that the filter elements are fitted with the least possible number of BNC connectors The left and right filter elements are mounted inside the MRI room at the RF Filter Panel The filter elements are supplied pre assembled and connect to the headphone s left and right channel inputs Figure 6...

Page 11: ...ants 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 Control Room Assembly Filter Box The Filter Box is MR Unsafe and should not be installed inside the MRI room The Filter Box should be installed in the control room as close as possible to the R...

Page 12: ... are MR Unsafe and should not be installed inside the MRI room A pair of high quality desktop speakers are included with the package They connect directly to the amplifier and allow the audio delivered to the headphones to be monitored by the Technologist Figure 9 Desktop Speakers For more information about connecting the desktop speakers to the amplifier see Connecting the Desktop Monitor Speaker...

Page 13: ...d other media players and turns them into digital optical signals to send to the amplifier If you are connecting to an audio source capable of producing S PDIF digital audio such as the AudioFile this converter is not necessary Figure 10 Analogue to Digital Converter The Analogue to Digital Audio Converter is supplied with its own external PSU and TOSLINK optical cable For more information about c...

Page 14: ...R Unsafe They should not be installed inside the MRI room Cables 1 6 are interchangeable as long the same length colour is always used for the left white and right red channels Figure 11 Red and White Cables Cables 1 and 2 are 5 meters approx 16 4 ft long while Cable 3 is 2 5 meters approx 8 2 ft long Cables 4 and 5 are 5 meters approx 16 4 ft long while Cable 3 is 2 5 meters approx 8 2 ft long ...

Page 15: ...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 amplifier Figure 14 Optical Cable ...

Page 16: ...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 Figure 16 Memory Foam Cushions ...

Page 17: ...t on When choosing a location for the amplifier take into consideration Distance from the RF Filter Panel is limited by the length of the BNC cables Space should accommodate desktop monitor speakers and the Technologist microphone Figure 17 Starter f MKII Amplifier Connect Headphone Cable Connect Cable 10 the headphone cable to the PAT HP Patient Headphone port at the rear of the amplifier as show...

Page 18: ...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 Connect a Cable 1 and 4 to the side of the Filter Box labelled Isolated Input from Audio Amplifier as shown in Figure 20 Figure 20 Connecting to the Filter Box ...

Page 19: ...e included in the package Figure 21 Connecting the Filter Box to the Penetration Panel Connecting the Desktop Monitor Speakers The Desktop Monitor Speakers are powered by the amplifier and do not require a separate power supply Connect Cable 8 the speaker cable to the Stim Mon port of the amplifier In Figure 22 notice that the Cable 8 has two types of wires to connect to the speakers an insulated ...

Page 20: ... 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 included for clarity ...

Page 21: ...gist 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 Figure 26 Installing Optional Feedback Microphone ...

Page 22: ... 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 Figure 27 Alternate Audio Setup The output from Analogue to Digital Converter connects amplifier input IN 3 or IN STIM optical port depending on the amplifier mode For more information on the amplifier mode see Changing the Amplifier Mode...

Page 23: ... shipped with AudioFile mode active You can read more about AudioFile mode and its timing capabilities in the separate AudioFile User Manual AudioFile mode requires other specialised equipment to be installed which generates TTL compatible triggers and track selection codes As this manual only concerns the installation of AudioFile it will simply be necessary to make sure that all the components h...

Page 24: ...he file DeviceType Is Either AUDIOFILE Or USB Audio Entry DeviceType AUDIOFILE Save the Config xml file then eject the SD card from the computer Return the SD card to AudioFile and connect the device to your computer using the USB cable supplied the AudioFile package The device will boot in USB Audio mode Use the Cable 9 to connect AudioFile to the amplifier as shown in Figure 29 Figure 29 Install...

Page 25: ...o the left audio channel Figure 30 BNC Connectors Filter Elements Filter elements are MR conditional meaning that they are safe when installed properly in the MRI room Make sure the filter elements are securely fastened amongst themselves and onto the bulkhead BNC connectors mounted on the RF Filter Panel Attach the headphone BNC connectors to the male coupler of the filter elements If the filter ...

Page 26: ...he 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 Figure 32 Alternate Filter Element Assembly These filter elements can now be attached to the RF Filter Panel at a 90 degree angle allowing for a less obtrusive connection ...

Page 27: ...MR Confon Starter f MKII User Guide 071 CRS N3001 R01 26 Starter f MKII Amplifier Quick Reference Sheet The Amplifier Figure 33 The amplifier rear panel Figure 34 The amplifier front panel ...

Page 28: ...put F Port not used G Subject Headphones H Patient Monitor Speaker For use with subject feedback microphone I Technologist Monitor Speaker J Port not used K Parallel Port only used for firmware updates L Technologist Microphone M Trigger Input Output N Serial Input Output O Power ON OFF P Power IN OUT Front panel interface Q Balance Dial left right audio channel R Subject Feedback Microphone S But...

Page 29: ...rophone 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 Figure 35 The Technologist Microphone ...

Page 30: ...e 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 When in Entertainment mode the right LCD indicates the source SRC as SPDIF 3 This corresponds to IN 3 on the rear of the amplifier Figure 36 Entertainment Mode connection detail ...

Page 31: ...ar of the amplifier Figure 37 fMRI Mode connection detail To switch between these two modes press the Start button Don t forget to connect the optical cable to the correct optical input as indicated by each mode Adjusting the Volume on the Headphones By default the volume dial adjusts the sound on the patient headphones While adjusting the volume dial the MUSIC VOL level displayed on the left LCD ...

Page 32: ... the right LCD the SRC indication is now SPDIF 4L This corresponds to the IN 4 in the optical input make sure the optional Participant Microphone is connected to IN 4 Adjusting the Desktop Speaker Volume Push the volume dial once and the left LCD changes from MUSIC VOL to MUSIC MONVL on the first line and from Balance to SUBJ MONVL on the second line MUSIC MONVL is the Technologist speaker volume ...

Page 33: ...ly and like any other regular electronic device could fail at any time without warning Magnetic fields Do not take MR Unsafe parts into the MRI room Servicing 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 en...

Page 34: ... 8 in Height 11 4 cm approx 4 5 in 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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