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Blackrock Microsystems Cerebus, Instructions For Use Manual, Page: 1 / 27

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630 Komas Drive 

|

 Suite 200 

Salt Lake City 

|

 UT 84108 

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 USA 

P +1 801.582.5533 

|

 F +1 801.582.1509 

www.blackrockmicro.com 
 

Revision 15.00 / LB-0028 

–

 Cerebus Instructions for Use 

Cerebus, CerePlex, CerePort, and NeuroPort are registered and unregistered trademarks of Blackrock 
Microsystems 
 

 
 
 
 
 
 
 
 
 

Cerebus

  

Instructions for Use 

 

 
 
 
 
 
 

 

 

 

Summary of Contents for Cerebus

Page 1: ... USA P 1 801 582 5533 F 1 801 582 1509 www blackrockmicro com Revision 15 00 LB 0028 Cerebus Instructions for Use Cerebus CerePlex CerePort and NeuroPort are registered and unregistered trademarks of Blackrock Microsystems Cerebus Instructions for Use ...

Page 2: ...r Power Supply APS 8 Cables 9 Digital Cerebus System Hardware 10 Digital Hub 128 10 Digital Hub Inputs 10 CerePlexTM Digital Headstages 11 Neural Signal Processor NSP 12 NSP Front Panel 13 NSP Back Panel 15 Quick Setup Guide 17 Setting up the Cerebus System 17 Setting up the Digital Cerebus System 17 Setting up the Ethernet Link 17 Troubleshooting 18 The NSP is stuck in the initializing step 18 Ho...

Page 3: ... Amplifier is not receiving power 20 The fiber optic LED indicator is illuminating red 21 The source status LED on Digital Hub is illuminating red 21 The Central application fails to start 22 Warranty 23 Support 23 Appendix 1 24 Warnings 24 Cautions 24 Specifications 24 Symbols of Contraindications Warnings Cautions 25 Appendix 2 26 Electromagnetic Immunity 26 ...

Page 4: ...ting Functionality can be further increased with custom user defined scripts Cerebus Models The Cerebus System is offered in the following two versions 1 Cerebus System The Cerebus System is packaged with a Front End Amplifier FEA The Front End Amplifier is compatible with Blackrock s analog headstages which provide an isolated low impedance output that ensures signal integrity and minimizes tethe...

Page 5: ...tion CD Setup Overview The following diagrams depict overall views of how the Cerebus and the Digital Cerebus Systems are integrated within a typical laboratory environment The experiment subject area is both electrically and optically isolated from the experiment operation and control area In the Cerebus System digitization and amplification takes place inside the Front End Amplifier The amplifie...

Page 6: ... a bipolar recording The resultant signal then goes through the gain and filtering stage The amplified signal is then digitized converted to fiber optic signal and transferred to the processor for further analysis display or storage Cerebus System Hardware The Cerebus System components are depicted inside the following block diagram The architecture generally consists of analog headstages Front En...

Page 7: ...ow pass at 7 500 Hz and digitized 30 kHz 16 bits at 250 nV resolution converted into the optical domain and then transmitted to the NSP via a fiber optic link which is immune to electromagnetic field interference The Amplifier ground is not connected to the earth ground The Amplifier ground is isolated and floating There are ESD shunt circuits that will conduct differences of 1000 V or more The Am...

Page 8: ...nd Amplifier via direct cable connections for each channel Blackrock analog headstages ensure maximum common mode noise rejection by the Front End Amplifier The high input impedance and low bias current of the Front End Amplifier inputs make it possible to connect microelectrodes with 20 kΩ at 1kHz or lower impedance values directly to the Front End Amplifier inputs without the need for a headstag...

Page 9: ...le connections for any inadvertent shorting turn off the APS and turn it back on to reset the error Cables Included with the system is a power cable for the NSP not shown a power cable for the APS not shown a fiber optic link that connects the Front End Amplifier to the NSP a crossover Ethernet cable that connects the NSP to the Host PC and a cable that connects the APS to the Front End Amplifier ...

Page 10: ...stem Digital Hub 128 The Blackrock Digital Hub provides an interface between the NSP and CerePlex digital headstages The Digital Hub converts digital signal to an optic digital format which is sent directly to the NSP This dramatically reduces the noise introduced to the signal during transmission The Digital Hub can handle many possible configurations when it is connected to multiple CerePlex dig...

Page 11: ...tailed information on Digital Hub 128 please refer to the Digital Hub user manual found at www blackrockmicro com CerePlexTM Digital Headstages Blackrock Microsystems manufactures a range of different models of CerePlex digital headstages which are characterized by their low noise light weight and small physical profile These headstages are all compatible with the Digital Hub 128 For more detailed...

Page 12: ...gnals from more electrodes The hardware and architecture inside the NSP are both periodically optimized to improve the overall performance and reliability of the system Blackrock Microsystems has so far released four different versions of the NSP mentioned below NSP 1 0 Part number 4176 NSP 1 5 Part number 7530 NSP 1 75 Part number 9650 NSP 2 0 Part number 10411 NSP 1 0 architecture was based on a...

Page 13: ...ndby and Synchronized 3 Analog Inputs Auxiliary analog signals can be recorded through 16 BNC ports The analog source may range 5 0 V and should come from a source impedance of less than 100 Ω The coupling of each input channel can be manually selected in the software By default channels 1 8 are AC coupled and channels 9 16 are DC coupled Figure 9 Front side of the NSP 1 75 showing the power switc...

Page 14: ...Outputs Four 5 0 V analog output BNC connectors can be used to send monitoring signals or stimulus waveforms to other connectors 7 Audio Output The system sends a 1 5 V line level audio signal of the selected data channel to two BNC ports and one 3 5mm female stereo audio connector simultaneously 8 Digital Outputs Four single bit digital BNC outputs can be programmed for monitoring or timing funct...

Page 15: ... NSPs Once the sync cable Blackrock PN 5584 is properly connected between NSPs they will automatically synchronize Some older NSP models may not have this port To add synchronization capability to your NSP please contact Blackrock Microsystems at sales blackrockmicro com 12 Fiber Optic Link This port connects to the Front End Amplifier or the Digital Hub using a fiber optic cable A LED to the righ...

Page 16: ...s Instructions for Use 16 NSP 1 0 NSP 1 5 NSP 1 75 NSP 2 0 Figure 12 Back panel view of different versions of NSP showing the adaptive Line Noise Cancellation plug 10 Synchronization Port 11 and the Fiber Optic input connector s 12 ...

Page 17: ...NSP rack mount brackets to install it in an equipment rack or rubber feet to place it on a table 3 Plug in the NSP and the Hub power supply to electrical outlets 4 Connect the power supply to the Digital Hub 5 Connect one end of the fiber optic cable to the NSP and the other end to the Digital Hub 6 Turn on the NSP then the Digital Hub 7 If available connect a CerePlex headstage to the Digital Hub...

Page 18: ...s IP address is currently fixed at 192 168 137 128 Troubleshooting For latest troubleshooting articles please visit support blackrockmicro com and click on the Knowledge Base Below you can find more information on some of the commonly asked questions The NSP is stuck in the initializing step In this case the NSP does not boot up correctly after being turned on and Initializing Step 2 is displayed ...

Page 19: ... click on the UpdateNSPFirmware file you downloaded in step 1 5 Click on Setup 6 Press y and then hit enter 7 Wait for the upgrade to finish This may take about a minute Do not turn off the NSP during programming 8 Press any key to exit the update utility and to restart the NSP To install Central Windows Suite 1 Before installing the new software the old version of Central needs to be uninstalled ...

Page 20: ...a short in the connector for the amp power cable or the internal fuses are bad It would need to come back to Blackrock for further diagnostics and repair 2 Connect the power supply to the amplifier but disconnect any inputs to the amplifier e g patient cable manifold etc Power up the power supply If the supply doesn t go into error mode then the problem is likely a short in something that gets con...

Page 21: ...ng data from that bank Possible causes LED can become yellow red if there is a bad connection between the CerePlex Headstage and Digital Hub or if the data packets are not valid A turned off LED means that no Headstage is plugged into that bank or that the Digital Hub is already processing a full 128 channels from higher priority banks Troubleshooting steps 1 For no LED problem check the HDMI cabl...

Page 22: ...on Problems with the NSP network connection o Disconnected or a bad ethernet cable o Problems with the IP address or other network settings Firmware or Hardware issues on the NSP Troubleshooting steps 1 Check whether the NSP is powered on with the Firmware version visible on the and the ethernet settings Short in power path external to the supply which can be the cable amplifier itself headstages ...

Page 23: ...ies including without limitation the implied warranties of merchantability fitness for a particular purpose and non infringement of third party patent or other intellectual property rights Blackrock shall not be liable for special indirect incidental punitive exemplary or consequential damages including without limitation damages resulting from loss of use loss of profits interruption or loss of b...

Page 24: ...C 60601 1 7 The Cerebus System should be disconnected from any electrodes during cardiac defibrillation 8 Place the Cerebus system in a secure location 9 Avoid tripping on cords connected to the Cerebus system Cautions 1 Follow the restrictions of use for third party electrodes or arrays 2 Third party recording or control systems connecting to the Cerebus System and components must be electrically...

Page 25: ...C 60417 5333 Type of BF Applied Part IEC60417 5008 OFF power CSA 60950 1 03 UL 60950 1 Class 1 Laser Product N EN 980 Manufactured date M EN 980 Manufacturer Y EN 980 Warning g EN 980 Batch IEC60417 5019 Protective earth ground IEC60417 5007 ON power IEC60417 5009 ON OFF Stand by f EN 980 Serial Number MYEAR EN 980 Combined Manufacturer Manufacturing Date i EN 980 Read the documentation ...

Page 26: ...commended separation distance in meters m Field strengths from fixed RF transmitters as determined by an electromagnetic site surveya should be less than the compliance level in each frequency rangeb Interference may occur in the vicinity of equipment marked with the following symbol NOTE 1 At 80 MHz and 800 MHz the higher frequency range applies NOTE 2 These guidelines may not apply in all situat...

Page 27: ...r to 60601 1 2 Table 206 Rated maximum output power of transmitter W 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2 5 GHz Separation distance according to frequency of transmitter m 0 01 0 12 0 12 0 23 0 1 0 38 0 38 0 73 1 1 2 1 2 2 3 10 3 8 3 8 7 3 100 12 12 23 For transmitters rated at a maximum output power not listed above the recommended separation distance d in meters m can be estimated us...

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