Digital Lynx SX User Manual
Contents
1. Accs may be on or off 5 1 2 Testing your Inputs As of September 2005 all new systems ship with an Input Test Cable Figure 6 1 Input Test Cable This cable is for testing signal pass through and Common Mode Rejection CMR on the inputs to your Input Boards The signal pass through test confirms that analog inputs applied directly to your Input Board are converted to digital and transmitted to Cheetah as expected The CMR test Figure 5 1 Input Test Cable verifies the integrity of the input and conversion process Revision 1 2 6 25 2013 Page 35 Because differential signaling offers the best noise performance Neuralynx data acquisition systems use differential signaling to transmit electrophysiological signals from the headstage preamplifier to the Cheetah DAS This method of signal transmission uses two wires per signal These two wires are typically referred to as positive and negative With the Neuralynx system your electrode signals connect to the positive inputs and your references connect to the negative inputs The Input Test Cable ties all 32 positive input signals together to the red banana plug and all 32 negative input signals to the black banana plug The input grounds are connected to the green banana plug Banana Plug Wiring Summary e Red 32Positive Inputs e Black 32 Negative Inputs e Green 16 Ground Connections The Input Test Cable is designed to be used with a signal generator The maximum signal input2. S the Digital Lynx SX includes a timestamp with every digitized sample of data that is transmitted to the Cheetah software The timestamp increments once per microsecond based on a 1 MHz digital clock signal The Digital Lynx SX always outputs this 1 MHz clock on the TS Clock Output The TS Clock Input and TS Clock Output operate at the 2 5 Volt LVCMOS level and use SMA connectors These connectors provide a robust physical connection with excellent signal integrity 3 2 6 Serial Device Expansion This port is for future use and is currently unused Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 22 3 3 Backplane Modules The Digital Lynx backplane provides the backbone for a scalable and future ready acquisition system But it is the backplane modules that do the work of taking low noise data from your lab environment preserving its integrity and then relaying that data to you Neuralynx currently offers two types of backplane modules 3 3 1 Hybrid Input Board The Digital Lynx Hybrid Input Board is a Backplane Module that adds 32 Hybrid Coupled Channels to a Digital Lynx SX Data Acquisition System It seamlessly integrates extremely low noise differential amplifiers 1 4u Vrms Full Bandwidth with 24 bit A D converters sampling at rates between 16KHz and 40KHz Each Channel is Hybrid Coupled meaning large DC potentials up to 1V and small AC signals up to 132mV can be measured in unison without any DC errors or loss
3. a standard banana plug or a wire In most setups this ground connection is not needed It should only be used if a strong noise source is present and Neuralynx recommends grounding the cabinet as a solution Connecting a wire to Gnd Unscrew the knurled ground connection cover 2 Insert a stripped wire into the post hole 3 Wrap the bare wire approximately one turn around the post 4 Screw the knurled cover back down to secure the wire 4 5 Connecting Fiber Optic Data Link Your Digital Lynx SX system includes at least one fiber optic cable Figure 4 8 Please read Appendix A 1 on fiber optic cable care before continuing Figure 4 8 Fiber Optic Cable Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 32 1 Connect this cable to the port labeled Fiber Optic Data Link 1 on the rear panel of your Digital Lynx SX The connector will click when secured Figure 4 9 Fiber Optic Connection to SX Rear Panel 2 Route the fiber optic cable to the computer The performance of a fiber optic cable can be negatively affected by bending the cable too severely It is important to maintain a bend radius larger than 4 5 cm at all times Bending the cable to a radius of less than 4 5 cm can cause damage to the glass enclosed which will cause transmission degradation Cable Figure 4 10 Fiber Optic Minimum Bend Radius Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 33 3 Onthe back of the computer locate the o
4. four ports on the rear panel and it is also where your Digital Lynx SX serial number is located This door should not need to be opened but if it is do not allow the weight of the door to rest on the cables plugged into it Four ports on the rear panel 1 Main power connection 15V 2 Ground Gnd 3 Fiber Optic Data Link 1 Required for communication with Cheetah Data Acquisition Software DAS 4 Fiber Optic Data Link 2 Reserved for future use Neuralynx m High Density Electrophysiology ecording Systems Digital Lynx SX 15V Gnd Fiber Optic Data Links e Neuralynx Inc Bozeman Montana _ www Neuralynx com Figure 3 6 10SX Rear Panel Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 13 3 2 SX Motherboard o E le Power Switch OFF isv Oon 5 5VO 5 5v MOLOEN e TS Clock Input Ts Clock Output e 3 DZ Analog DE Serial Device Expansion S1 OTT Por 2 3 Power TTL 5V Power TTL I O Port 3 TTL I O Port 2 A Q s2 OTT Port 0 1 Power TTL 5V Power TTL I O Port 1 TTL I O Port 0 Revision 1 2 6 25 2013 N eu ralyn On the SX Motherboard Front Panel High Density Electrophysiology ynx Systems e 10 LED status indicators e Power Switch e Four 8 Bit I O ports available for TTLs e 4 Analog Outputs e Timestamp Clock Input and Timestamp Clock Output e Serial device expansion connector XS xu amp T Digital Lynx SX User Manua
5. range of an Input Board is from 132 millivolts to 132 millivolts Thus when using the Input Test Cable the signal generator output amplitude should not exceed this range Note that the Input Test Cable will not attenuate the signal generator output as is the case with a Neuralynx Signal Mouse A banana jack to BNC adapter is needed to connect the Input Board Test Cable to the signal generator This adapter is included with your system see Figure 6 1 Input Test Cable 5 1 2 1 Signal Pass Through Test 1 Connect red banana jack to the signal of the signal generator 2 Connect black to the signal generator ground 3 Connect green to the signal generator ground 4 Setthe signal generator output to a 1 mV 20 Hz square wave This will put 1 mV spikes on the spike channels and a 1 mV square wave signal on the CSC channels depending on frequency filtering settings 5 Adjust the CSC input range so you can see an unclipped waveform on the displays Please reference Cheetah Quickstart guide or the Cheetah Reference Guide for detailed information Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 36 5 1 2 2 Common Mode Rejection Test The Common Mode Rejection CMR test connects the same signal to all positive and negative inputs of the Input Board The purpose is to confirm that on all channels positive input negative input 0 A result near zero indicates that the inputs are working properly 1 Connect red banana
6. 0 S2 unused Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 16 SiC TIL Port 2 3 Power TTL 5V Power TTL I O Port 3 TTL I O Port 2 p PuNaID LL 3 s2 C Q TIL Port 0 1 Power TTL 5V Power TTL I O Port 1 TTL I O Port 0 A Q Figure 3 8 TTL Power S1 and S2 LEDs 3 2 2 Power Switch When the 15V LED indicates that a 15 V power supply is connected to the Digital Lynx SX the Power Switch enables power to the SX Motherboard Enabling power to the SX Motherboard begins the Digital Lynx SX boot cycle and illuminates the On 5 5V 5 5V and 4 5V LEDs Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 17 3 2 3 TTL I O Ports The Digital Lynx provides 32 TTLs They are configurable as inputs or outputs in four groups of eight TTL I O Ports 0 through 3 Figure 3 9 represent the four groups of eight TTLs When configured as outputs the TTLs can be set high or low and pulsed high or low for pulse durations of 1 millisecond to 10 000 milliseconds Port direction and other TTL settings are configured using the Cheetah DAS The TTLs are accessible from two 34 pin connectors on the SX Motherboard front panel Each 34 pin port includes two 8 bit TTL ports Figure 3 9 Pin 34 e Pin 33 5V Pin 31 Bit 7 Port 3 Pin 29 Bit 6 Port 3 Pin 27 Bit 5 Port 3 Pin 25 Bit 4 Port 3 Pin 23 Bit 3 Port 3 Pin 21 Bit 2 Port 3 Pin 19 Bit 1 Port 3 Pin 17 Bit
7. 0 Port 3 Pin 15 Bit 7 Port 2 Pin 13 Bit 6 Port 2 Pin 11 Bit 5 Port 2 Pin 9 Bit 4 Port 2 Pin 7 Bit 3 Port 2 Pin 5 Bit 2 Port 2 Pin 3 Bit 1 Port 2 Pin 1 Bit 0 Port 2 Revision 1 2 6 25 2013 s1 TIL Port 2 3 Power TTL 5V Power TTL I O Port 3 TTL I O Port 2 A Q 5 s2 OTT Port 0 1 Power TTL 5V Power TTL I O Port 1 TTL I O Port 0 punas Wi e 7 Ground Connection Q 1 0 O TTL 5 Volts Figure 3 9 TTL Ports Digital Lynx SX User Manual Pin 34 Pin 2 Pin 33 5V Pin 31 Bit 7 Port 1 Pin 29 Bit 6 Port 1 Pin 27 Bit 5 Port 1 Pin 25 Bit 4 Port 1 Pin 23 Bit 3 Port 1 Pin 21 Bit 2 Port 1 Pin 19 Bit 1 Port 1 Pin 17 Bit 0 Port 1 Pin 15 Bit 7 Port 0 Pin 13 Bit 6 Port 0 Pin 11 Bit 5 Port 0 Pin 9 Bit 4 Port 0 Pin 7 Bit 3 Port 0 Pin 5 Bit 2 Port 0 Pin 3 Bit 1 Port 0 Pin 1 Bit 0 Port 0 Page 18 3 2 3 1 Enabling or Disabling the TTL Port Power Pins The top rightmost pin on each 34 pin connector is an optional 5 V TTL level power output for powering external TTL devices see pins designated in red in Figure 3 9 above The TTL Port Power LED directly above the power pin is illuminated when the pin power pin is at 5 V When the LED is off the pin is not powered Each of the two optional 5 V TTL power pins is enabled or disabled using a jumper internal to the SX Motherboard
8. Digital Lynx backplane architecture offers a lot of flexibility but another benefit is that any free slot in your Digital Lynx SX is a slot that could house the next innovative backplane module from Neuralynx 3 3 3 AC Input Board The Digital Lynx AC Input board adds 32 AC coupled acquisition channels to a Digital Lynx acquisition system Each input board digitizes incoming analog data at 32 kHz with a very low 1 3 uV of noise AC coupling allows for recording of signals between 0 16 Hz and 8 5 kHz eliminating DC artifacts in neural signals Input boards can be paired with Digital Reference Selectors DRS for software controlled signal referencing 3 3 4 DC Input Board The Digital Lynx DC Input board adds 32 DC coupled acquisition channels to a Digital Lynx acquisition system Each input board digitizes incoming analog data at 32 kHz with a very low 1 3 uV of noise DC coupling allows for recording of signals between 0 Hz and 8 5 kHz allowing acquisition of DC coupled external signals such as those from eye trackers Input boards can be paired with Digital Reference Selectors DRS for software controlled signal referencing Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 25 4 Setting Up Your Digital Lynx SX Your Digital Lynx SX is configured before it is shipped to you If using DRS 36 for referencing setup is simple Setup of the Digital Lynx SX includes 1 Mounting the Digital Lynx cabinet on a table cart or rack 2 Set
9. User Manual 6 25 2013 Page 7 3 1 1 Removing the SX Motherboard The SX Motherboard should rarely be removed from the backplane Only remove this board if instructed by a Neuralynx representative If it must be removed follow these steps 1 Remove the blank face plate to the right of the SX Motherboard by removing the four screws that secure it This is necessary because there are cables internally connected to the SX that must be disconnected before removing the board 2 Disconnect any cables connected to the front of the SX Motherboard 3 There is a captive screw in the top extraction latch and one in the bottom extraction latch Unscrew these two screws 4 Press the white release button on both the top and bottom extraction latches 5 Atthe same time spread the top latch up and the bottom latch down to eject the board from the backplane Figure 3 3 Do not yet remove the board Figure 3 3 Extraction Latch Motion for Ejecting a Module in a 4SX Model Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 8 6 Slowly slide the board out far enough that you can disconnect the two optical fiber connections near the top of the board Figure 3 4 You must squeeze the optical fiber connector release ramp to disconnect the cable If the optical transceiver module comes loose while removing the cable reinsert the module If the fiber optic connectors will be left disconnected for more than a few minutes cover their tips with du
10. analog outputs on two 3 5 mm stereo jacks on the Digital Lynx SX Motherboard front panel Download Digital Lynx SX and backplane module firmware updates from your computer Backward compatible with 10S and 4S systems You can upgrade your 10S or 4S system to an SX Two Gigabit Ethernet fiber optic links Maintained Features Up to 320 analog inputs per system Every analog input is sampled with an individual 24 bit analog to digital converter Analog input bandwidth is 0 1 Hz to 8 KHz Analog inputs are sampled simultaneously Analog input range is 132 millivolts Analog inputs are fully differential inputs Extremely low input noise levels of 4 microvolt peak 1 3 microvolt RMS means high quality recordings All referencing done by Cheetah Data Acquisition Software up to 8 selectable references at one time Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 5 3 Components of the Digital Lynx SX The Digital Lynx SX is made up of three basic components 1 An aluminum cabinet that encloses a backplane The backplane makes it easy and cost effective to start with a system for today s experiment that has the capacity for future experiments 2 The Digital Lynx SX Motherboard The Motherboard arbitrates the backplane and offers many inputs and outputs to improve the quality and complexity of your experiments The SX Motherboard evolved the Digital Lynx S into the Digital Lynx SX 3 Backplane modules such as Input Boards
11. and DRS 36 plug into the SX backplane to do the work of executing your reference selections and acquiring your data New backplane modules could be a vehicle for future developments in acquisition technology Cabinet Figure 3 1 Three Components of the Digital Lynx SX Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 6 3 1 SX Cabinet Using backplane modules the Digital Lynx SX can be configured to the needs of your experiment Two types of backplane modules are offered Input Boards for converting your analog electrode signals to digital and DRS 36 to provide you with software controllable referencing Unused backplane module slots can be covered with blank panels This is a good idea as it prevents dust or other harmful materials from entering the Digital Lynx SX The picture below shows a 10SX with five Input Boards and five DRS 36 Boards Each board supports 32 channels The leftmost slot of the backplane is referred to as Slot 0 and that number increments while counting to the right In Figure 3 2 below Slot 0 is occupied by an Input Board and Slot 1 is occupied by a DRS 36 Four more pairs of Input Board and DRS 36 are present to the right Slot 10 is for the Digital Lynx SX Motherboard only 2 2 es ease esses sss 095225999999 Figure 3 2 A Fully Loaded 10SX Cabinet Neuralynx also offers the Digital Lynx 4SX which is significantly smaller and can fit up to four backplane modules Revision 1 2 Digital Lynx SX
12. dea T aai 37 Appendix A Digital Lynx SX Care and Maintenance eee 38 A l Fiber Optic Cables and Connectors uide e oap irent ette stp tn dtd deae xa Reg pat 38 AZ Electrica Connectors Gerne bp aaae loch eo ida veod ku E eque 40 Appendix B CHOSSAE S tta ad we aret eeu eee es 41 Bul E E 5 a a EE E E A AE E E E A bitten IUE 41 B 2 UAB PSV Ia ONS zo eee A a a tu Md AER dide 42 Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 2 Main Document Figures and Tables Figure 4 1 Three Components of the Digital Lynx SX eese 6 Figure 4 2 A Fully Loaded 10SX Cabinet d uei phus einzudvus otto b ieu debet eng es tpa oto Con d ees ba eet 7 Figure 4 3 Extraction Latch Motion for Ejecting a Module in a 4SX Model 8 Figure 4 4 SX Motherboard Internal Connections eeeeeeeseeeeeeeene 10 Figure 4 5 Extraction Latch Motion for Inserting a Module sss 11 Figure 4 6 TOS X Rear Panel Testirani reiha eee boosts d pner tet aiana 13 Figure 4 7 System Status LED Sessien rea dae Aa aae aeoea fe Eo pieds 15 Eure 4 8 TTE Power Stand S2 LEDS niteen ents iei bebes ao ebene ena asst 17 Pure E MM AV o e E ATE 18 Figure 4 10 5 V TTL Jumper Locations sseeeseeeseeseeeeeseseeesesressereeestseresrsreestreeeseesreseeesesee 19 Figure 4 11 3 5 mm Stereo Analog Output Jacks a20 idea Fete fto oath er vr dta a rto e arti oda 2 Fig te4 12 Hybrid Biput Board sirsie area
13. each of them clicks This ensures proper connection of the Motherboard g ce LA a lt x 7 x lt Figure 3 5 Extraction Latch Motion for Inserting a Module Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 11 3 1 3 Removing a Backplane Module 1 Disconnect any cables connected to the module 2 There is a captive screw in the top extraction latch and one in the bottom extraction latch Unscrew these two screws 3 Press the white release button on both the top and bottom extraction latches 4 Spread the top latch up and bottom the bottom latch down to eject the board from the backplane 3 1 4 Inserting a Backplane Module When reinserting or adding a backplane module to your system the extraction latch screws do not need to be screwed in However if transporting or shipping your Digital Lynx SX ensure that all faceplate and extraction latch screws are gently tightened 1 Slide the backplane module into the green slot guides until it makes contact with the backplane 2 Push gently but firmly on the front panel of the module to partially insert it into the backplane 3 Atthe same time pull both extraction latches inward Same as Figure 3 3 above until each of them clicks This ensures the module is properly connected Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 12 3 1 5 SX Cabinet Rear Panel The cabinet rear panel is a hinged door that is secured with three thumb screws There are
14. ed in concert with Input Boards to allow software controllable reference selection With a DRS 36 you can use any electrode as a reference see Section 3 3 2 Headstage HS This device is an electrical amplifier It is placed as near as possible to the electrode interface in order to preserve the integrity of the signals produced on electrodes and send those signals to the Digital Lynx to convert them from analog to digital Tren Sse remm Figure B 1 2 HS 36 Input Board Neuralynx backplane module that converts analog input signals to digital see Section Error Reference source not found Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 41 Signal Mouse SM A Neuralynx product used to apply test signals through the headstage preamplifiers It is useful in confirming that your system is working from headstage to Cheetah before using the system in an experiment Figure B 1 3 SM 36 Tether Extension shielded cable available in 6 15 or 25 foot extensions This cable is a robust cable used to extend a tether s overall distance Timestamp clock Every sample taken by the Digital Lynx is transmitted back to the computer with a time value that is relative to the when the Digital Lynx powered up The time values known as timestamps are accurate to one microsecond TTL This acronym stands for Transistor Transistor Logic It describes a common class of digital circuits that can be used to commun
15. he subnets are in bold type If the Digital Lynx SX IP is 192 168 3 10 you could select 192 168 3 100 for the IP of your Ethernet interface 2 Setthe subnet mask to 255 255 255 0 3 Do not enter a gateway IP Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 27 General r Internet Protocol Version 4 TCP IPv4 Properties 2 msn for the appropriate IP settings Use the following IP address i IP address Subnet mask Default gateway Preferred DNS server Alternate DNS server Validate settings upon exit You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator Obtain an IP address automatically 192 168 3 100 Obtain DNS server address automatically Use the following DNS server addresses 255 255 Figure 4 2 Setting IP Address for the SX 4 In the advanced settings Figure 4 3 for your Ethernet interface Flow Control must be set to Disabled Figure 4 4 Revision 1 2 6 25 2013 intel Advanced Adapter Settings Settings Interrupt Moderation Jumbo Packet r3 Large Send Offload v2 IPv4 3 Large Send Offload v2 IPv6 J Locally Administered Address Log Link State Event Priority amp VLAN Performance Options VLANs Boot Options Driver Details General Link Speed Advanced performance Configure
16. icate digital signals In a lab environment some useful digital signals could be the occurrence of an event or to open or close doors in a maze B 2 Unit Abbreviations hertz Hz kilohertz kHz millimeter mm megahertz MHz millivolt mV microvolt uV volt V Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 42
17. ii Neuralynx High Density Electrophysiology T 1X Systems Digital Lynx SX User Manual Neuralynx A Flexible Easy to Use Low Noise Solution For Electrophysiology Data Acquisition Neuralynx Inc 105 Commercial Drive Bozeman MT 59715 Phone 406 585 4542 Fax 866 585 1743 www Neuralynx com Revision 1 2 support Neuralynx com 6 25 2013 Table of Contents I Document OVer view nee cese paese est Co Fede aA citu A dou Ee repa uut iva feft B pb odds 4 4 BCA Lye SX OVetViIeW sieresisossnencnanntotuetabcarnesiecusnduciatesdaiyedtahshantsdea eto tut 0d a a EEn 5 3 Components of the Digital Lynx SA couette em rapto tef oo opi ud pu otra eO aoo oid 6 EE MACODINEL Tm T7 3 1 1 Removing the SX Motherboard ui rece ederet eto dente ertet fefto beet einige 8 3 1 2 Inserting the SX Motherboard ssseeesssseesesseesreseesrrseesreseesresresresreseesrerees 11 3 1 3 Removing a Backplane Module eese 12 3 1 4 Inserting a Backplane Module otis tetti Ete itta sitalebebucignedousssbacans 12 3 1 5 SX Cabinet Rear P aneb os edet duree aaas ea ettet fefto eet 13 32 SX Motherboard MT T 14 3 2 1 Status Indicator LEDS miseros aieas fefe A EE Eea E bh 15 3252 Power Swithin tr ee tea aeri eaaa er aanse aarte Cotta ipei 17 3 2 3 TTE UO VOUS ea E ta Cinta A E T E oaa fo feda por Fed 18 3 2 3 1 Enabling or Disabling the TTL Port Power Pins 19 3 2 3 2 TTL Voltage and Current Specificat
18. ions eene 20 3 2 4 PRA SOULS ruse sirenita erorar aa e Ear aee a En 21 3 25 TS Clock Input and TS Clock Output 4 eet desteeneut du testen enses 22 3 2 6 Serial Device Expansive oce err Pate cues dia mdested esu ens 22 3 3 Backplane Modules eec eo Rtortexb e RTT i n bo RE prn v M ttai ep EDT 23 3 3 1 Hybrid Input BOREAS dte e eiae aeaaaee t aieeaa 23 3 3 2 DRS 30 e aeaea RRA E AEA E L RA TS 24 3 3 3 AG Input Board zo ea te rac iid a a eaaa bis 25 3 3 4 DC pui Board aea a ot aaea ee cease a 25 4 Setting Up Your Distal Lynx SX ie ceases eaeko aineena epe Maite iE a aaa 26 4I Computer SetUp erea cn iato capa deep aa aa SE E 27 4 1 1 Physical SOUP uester ect raa yin ako aeaa a ees 27 4 1 2 Configuring Optical Ethernet Interface uiuere dtes roten 21 427 SX Cabinet SQUID noce ipie ear iota e iei d Fea acie oo ede ea Maven de Pes 30 4 3 Connecting 15 Volt Power Supply uieiiea enenatis sene easet do seta db dei tad do ep reque 31 4 4 Optional Ground Connection aieo inr Patre i IN Cot Mui tn oon 32 4 5 Connecting Biber Optic Data Link ep utendo Gainers 32 5 Testine your Digital Lynx SX sedeo tn ti re tsdepenis ra e eden atis oes 35 5 1 1 Turning Digital Lynx SX On aote Rea e Ed Ula meat ert 35 2 152 Tesine your Inpuls i s S ree teet eae ctr e id edt eluted Irae 35 S22 Signal Pass Through Test scissor niea 36 5 1 2 2 Common Mode Rejection Test ee airo rr e R tdeo iens 37 Salo Final System Lestera i vire eus de a d a
19. ipment eee 39 Figure B 1 1 Differential Stalin eli en ena ee tare te ia er riae ie eot esee 4 Figure B142 TSO wicca sis sa usn aun stele dd eee eu to a lego aded ai casts vaa oi od clad eeu 4 Ligure B lI 5 8 M 30 tees aac up ets cial seducir ee ete evalua cabe eeu Salue tua 42 Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 3 1 Document Overview This document describes the specifications and features of the Digital Lynx SX It also explains how to setup your system test it and start acquiring data There is a glossary at the end of the document Throughout this document you will see this warning sign An item or topic designated in a warning box is something that Neuralynx feels is important and should be carefully noted Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 4 2 Digital Lynx SX Overview The Digital Lynx SX is the next step in high performance high density data acquisition for electrophysiology recording Based on the mature technology of the Digital Lynx S series of systems we have added many new features and built in the flexibility to accommodate continually improving innovation in the field of electrophysiology research New Features Automatically detects which backplane modules are inserted This makes adding or removing Input Boards or DRS 36 effortless Select from 16 kHz to 40 kHz sampling rates in 2 kHz increments Four 8 Bit I O ports available for TTLs Four
20. is i ed Reto Ce derbi aal 23 Fiure 4A DRS 3O ai ea a e reds a e e aE ure retten fe bubo 24 Fiure S kS X Sepe e a E e ea TSS 26 Figure 5 2 Setting IP Address for the SX esseeseesseeeseesesssesesreesesreesrseresrseresrrseeseesresesresee 28 Fig te SAG VANCE SENES strdi eere e e ee bu aesir e ere Ae aati 28 Figure 5 4 Disabling Flow Control eeeseeeseeseeressesseesesrssesressesreestsrrenteeresteseseesreseessenee 29 Figure 5 5 Enabling Jumbo Packets ss i saitds dad sadacewsssetasevasesasecasanscvanauphoce caus barnetsseaandesepiosbunt 30 Eipure 5 6 SX Power Supply aee etti one a a a Ea i Ea deg cues 3l Figure 5 7 Digital Lynx SX Rear Panel Connections eese 3l Eipure5 5 Piber Optic Cable ue ierat aciei e e e iaia E ses du sa lade Ves e YI t ep eas 32 Figure 5 9 Fiber Optic Connection to SX Rear Panel eese 33 Figure 5 10 Fiber Optic Minimum Bend Radius eene 33 Figure 5 11 Fiber Optic Connection to Computer eese 34 Figure 6 1 Input Test Cale 42 eee Ipse ttp eodein midi see opui dicta didus pega dee 35 Table 4 1 Analog Outputs SX Motherboard Labels and Cheetah Labels 22 Appendices Figures and Tables Irpure AIL Fiber Optie Connector so aee out ele weder eine septo doe iU ae ete a UE 38 Figure A 1 2 Fiber Optic Pott Cover coerente eer ned einen eeu eta pena en eor enne uaa 39 Figure A 1 3 Storage of Fiber Optics Protection Equ
21. jack to the signal of the signal generator 2 Connect black banana jack to the signal of the signal generator 3 Connect green banana jack to signal generator ground 4 Setthe signal generator to a 5 V 20 Hz sine wave If you are using a Minirator use its maximum output amplitude instead of 5 V 5 You should see a very small signal when the input range is set to 25 microvolts This test is only valid for CSC displays as spike channels will need to see a spike which will not occur for a 20 Hz sine wave input 5 1 2 3 Final System Test After you inspect all system components it is good practice to perform a complete system test with a Signal Mouse The complete setup of this can be found in the Digital Lynx SX Installation Guide Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 37 Appendix A Digital Lynx SX Care and Maintenance A 1 Fiber Optic Cables and Connectors The fiber optic cable connectors have a latch that clicks when engaged There is a small release ramp Figure A 1 1 that is squeezed to release the latch Be gentle with the fiber optic cable and connector the exposed tips of the connector are polished for proper light transfer and must not be touched or scratched Release Ramp Dust Caps Figure A 1 1 Fiber Optic Connector The fiber optic cable should not be bent at sharp angles When routing the cable from the Digital Lynx to the computer avoid bends in the cable with a radius less than 4 5 cm Befo
22. l Page 14 3 2 1 Status Indicator LEDs There are ten status LEDs on the SX Motherboard front panel After SX boot up all six LEDs in Figure 3 7 are on 15V On when the 15 V power supply is plugged into the 15V port on the rear panel of your Digital Lynx SX On On when the power switch is in the On position 5 5V On when 5 5 V backplane power rail is active 5 5V On when 5 5 V backplane power rail is active ju al 4 5 V to 5 V Boot Indicates SX Motherboard boot status o Solid on system is configured and ready for use o Blinking slowly system is booting o Off system is not booting or boot did not complete e Neuralyn High Density Electrophysiology ynx Systems E f Power Switch Ney OFF 1270 eI 5 5VO O 5 5v VOLO Figure 3 7 System Status LEDs Revision 1 2 Digital Lynx SX User Manual 6 25 2013 4 5V On when 4 5 V backplane power rail is active Actual voltage range is Page 15 7 TTL Port 0 1 Power On to indicate 5 V TTL level power is present on the top rightmost pin of TTL Port 0 1 the lower 34 pin connector Off indicates this pin is not powered This setting is configurable using an internal jumper 8 TTL Port 2 3 Power On to indicate 5 V TTL level power is present on the top rightmost pin of TTL Port 2 3 the upper 34 pin connector Off indicates this pin is not powered This setting is configurable using an internal jumper 9 S1 unused 1
23. larger than standard Ethernet frames which are approximately 1 5k in size Note Changing this setting may cause a momentary loss of connectivity bs Figure 4 5 Enabling Jumbo Packets 6 Firewall must allow Cheetah to receive public and private TCP and UDP packets 4 2 SX Cabinet Setup All data acquisition hardware is within the Digital Lynx SX cabinet and setup is simple Mount the Digital Lynx cabinet at a convenient location on a table desk cart or in a standard 19 rack For specific dimensions of the Digital Lynx SX cases vented and non vented please contact support neuralynx com Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 30 4 3 Connecting 15 Volt Power Supply The Digital Lynx SX should be used only with the 15 V power supply supplied by Neuralynx Figure 4 6 SX Power Supply The power supply has a universal input AC power input which means that the input voltage range is 100 to 240 VAC This makes the power supply compatible with most of the world s power systems Connect the power supply to the port on the rear panel labeled 15V Figure 4 7 below 15V Fiber Optic Data Links eo od Neuralynx Inc 1 Bozeman Montana S N E www Neuralynx com Figure 4 7 Digital Lynx SX Rear Panel Connections Digital Lynx SX User Manual Revision 1 2 6 25 2013 Page 31 4 4 Optional Ground Connection The Gnd connection Figure 4 7 above accepts either
24. of high resolution Each channel also boasts very high CMRR ensuring exceptional reference subtraction and immunity from external electromagnetic interference sources All analog inputs are ESD protected up to Level 4 by IEC 61000 4 2 Standards while maintaining extremely low leakage currents Input boards can be paired with Digital Reference Selectors DRS for software controlled signal referencing For more information on the Digital Lynx Hybrid Input Board refer to its manual on the Neuralynx Website The Digital Lynx Hybrid Input Board is a direct replacement for the Digital Lynx AC and DC Input Boards Figure 3 12 Hybrid Input Board Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 23 Revision 1 2 6 25 2013 3 3 2 DRS 36 A Digital Reference Selector DRS is paired with an Input board to provide software controlled referencing for Digital Lynx acquisition systems Each DRS is capable of selecting up to eight signals that can be used as references for each of the 32 acquisition channels of an Input board A global reference connection allows for sharing of references between DRS boards using the included global reference modules All reference selections are made using the Cheetah Data Acquisition Software H Figure 3 13 DRS 36 Neuralynx Inc 105 Commercial Drive Bozeman MT 59715 Phone 406 585 4542 Fax 866 585 1743 www Neuralynx com support Neuralynx com It is clear that the
25. ptical fiber port and connect the other end of the fiber optic cable The connector will click when secured If there are multiple ports on the card select the left port see port labeled 1 in Figure 4 11 Fiber Optic Connection to Computer Depending on the system setup the card in your PC might look slightly different than the one in the image below Figure 4 11 Fiber Optic Connection to Computer Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 34 5 Testing your Digital Lynx SX Before beginning your first recording session Neuralynx strongly recommends testing your setup to confirm your system works as expected and that no electrical noise from the surrounding environment will interfere with your data 5 1 1 Turning Digital Lynx SX On Move the Power Switch on the Digital Lynx SX Motherboard front panel to the On position The SX Motherboard performs the following operations during the boot cycle Check the computer for new firmware boot LED blinking If there is new firmware download it boot LED blinking Program backplane modules boot LED blinking Wait for Cheetah connection boot LED stays on Dep be ES After the boot cycle completes the five LEDs on the bottom of each Input Board display a specific LED pattern All Input Boards will display the same LED sequence LEDI LED3 and LED4 will blink sequentially LP OK and LED2 remain on DRS 36 boards will have LEDs Boot D4 and D5 on Error off and
26. re inserting a fiber optic cable two dust caps must be removed These dust caps must be saved to protect the fiber optic cable ends when the cable is disconnected from the system There are small black soft rubber dust covers that are inserted into each of the fiber optic ports on the back of the computer and Digital Lynx SX These black dust covers must be removed before the optic cable can be connected Save these dust covers They should be placed back into empty fiber optic receptacles whenever a fiber cable is disconnected for an extended period Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 38 ro Dust Cove Figure A 1 2 Fiber Optic Port Cover Once removed dust caps and dust plugs should be stored in a bag or container for later use Figure A 1 3 Storage of Fiber Optics Protection Equipment Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 39 A 2 Electrical Connectors Contamination due to dirty connectors or corrosion can cause poor performance intermittent signal degradation or in some cases total device failure To prevent this it is a good idea to clean your connectors periodically This will depend on how often the connector is exposed to environmental elements such as excessive humidity or frequent handling your hands can leave oil on connectors Each Digital Lynx SX system is shipped with a DeoxIT Technicians Survival Kit The kit contains three different contact care solutions When using the
27. s the adapter to use settings that can improve adapter Figure 4 3 Advanced Settings Digital Lynx SX User Manual Page 28 Interrupt Moderation Rate Receive Buffers Transmit Buffers Flow Control Enables adapters to generate or respond to flow control frames which help regulate network traffic For an overview of this feature click here The adapter pauses transmission when it Tx Enabled receives a flow control frame from a link partner The adapter generates a flow control frame Rx Enabled when its receive queue reaches a pre defined Figure 4 4 Disabling Flow Control 5 Enable jumbo packets in the advanced settings of your Ethernet interface Figure 4 5 Enabling Jumbo Packets Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 29 r Intel R PRO 1000 PF Dual Port Server Adapter Properties VLANs Boot Options Driver General Link Speed E Advanced intel Advanced Adapter Settings Settings Value Interrupt Moderation Large Send Offload v2 IPv4 3 Al Large Send Offload v2 IPv6 CTI A Locally Administered Address Log Link State Event Performance Options Priority amp VLAN UseDefait Jumbo Packet Enables Jumbo Packet capability for TCP IP packets In situations where large packets make up the majority of traffic and additional latency can be tolerated Jumbo Packets can reduce CPU utilization and improve wire efficiency Jumbo Packets are
28. se products avoid spraying directly onto the surface of a connector Use the applicators provided in the kit Please contact support neuralynx com if you have any questions To clean a connector follow this procedure 1 Use DeoxIT to clean connector contacts 2 Use DeoxIT Gold to condition and maintain connector contacts 3 Use DeoxIT Shield to prevent build up and corrosion in severe environments 4 Allow the connector to dry completely before using You can use gas duster also known as canned air to accelerate the drying process Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 40 Appendix B Glossary B 1 Terms Cheetah Cheetah is the name of the Neuralynx data acquisition software Its full name is Cheetah Data Acquisition Software or Cheetah DAS Common Mode Rejection of a differential signal or other device measures the tendency of the device to reject input signals common to both input leads A high CMRR is important in applications where the signal of interest is represented by a small voltage fluctuation superimposed on a possibly large voltage offset or when relevant information is contained in the voltage difference between two signals Vis Differential Signal All Neuralynx amplifiers are v Vout differential This means that they subtract a reference from the original source and each output is the difference LAE Ma Figure B 1 1 Differential Signal DRS 36 Neuralynx backplane module us
29. see Figure 3 10 5 V TTL Jumper Location The jumper for ports 0 and 1 is labeled J14 on the Motherboard and the jumper for ports 2 and 3 is labeled J13 Jumper Locations c TERR a t ia VIRTEXSS x XC5VSX357 Figure 3 10 5 V TTL Jumper Locations Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 19 3 2 3 2 TTL Voltage and Current Specifications Each motherboard will be shipped with both 5V TTL power pins enabled This means that there is a 5V source on pin 33 of each 34 pin connector see Figure 3 9 TTL Ports This 5 Volts has a current limit of 250 milliamps If this limit is exceeded an auto resettable fuse will open to protect internal circuitry The fuse will automatically close when the circuit causing the current overdraw is disconnected If you would like to disable this function move the blue jumper to the right two pins labeled off Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 20 3 2 4 Analog Outputs Four analog outputs are available through two 3 5 mm stereo jacks on the front panel of the SX Motherboard Analog outputs are selected using the Cheetah DAS Neuralyn High Density Electrophysiology ynx Systems ON f a Power Switch Ec OFF sv Oon HOLOE 4 5v O Boot e TS Clock Input Ts Clock Output Um xe YU Analog Outputs p Figure 3 11 3 5 mm Stereo Analog Output Jacks These outputs can be used to output any signal you are acquiring with yo
30. st caps Cover open optical ports with rubber dust covers See Appendix A 1 for instructions on proper care of fiber optic parts 7 Disconnect the black 20 pin ribbon cable which is plugged in to a 2x10 header between the LCD and the lower optical fiber connector Figure 3 4 8 After the two optical fibers and the 20 pin ribbon cable are disconnected slowly remove the SX Motherboard from the Digital Lynx SX cabinet Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 9 Figure 3 4 SX Motherboard Internal Connections Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 10 3 1 2 Inserting the SX Motherboard ils Partially insert the SX Motherboard into the green slot guides leaving enough space to reach the two fiber optic cables and 20 pin ribbon cable Reconnect both fiber optic cables The cable with a cuff labeled 1 must be plugged into the upper optical port The cable labeled 2 must be plugged into the lower optical port Plug the 20 pin ribbon cable into the 2x10 pin header between the LCD and the lower optical cable The 20 pin ribbon cable connector is keyed so that it can be inserted in only one way Slide the Motherboard in further until it makes contact with the backplane Gently but firmly push on the left side of the Motherboard front panel to engage the connectors Do not try to force the Motherboard all the way into its slot At the same time pull both extraction latches inward Figure 3 5 until
31. ting up your new computer 3 Connecting the 15 Volt power supply to the Digital Lynx SX 4 Connecting a fiber optic cable from your computer to your Digital Lynx SX Reference Selection Buffered Pre 24 Bit A D Conversion Amplifier Tether Digital Lynx Y 32 9 EiB Heacstage Recording Channels i 36 E Electrode Interface Filtering and User es _ Selectable Input e ad Range Done in Software Figure 4 1 SX Setup If you purchased DRS 36 boards with your Digital Lynx SX they are pre installed in your Digital Lynx SX system Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 26 4 1 Computer Setup 4 1 1 Physical Setup Place your monitor and tower and plug them into the same power strip Plug in keyboard and mouse Do this by following all HP documentation which can be found in the HP Computer box 4 1 2 Configuring Optical Ethernet Interface Some of the computer screen shots in this section might slightly differ from the screen images that you see on your computer This is dependent on what type of Ethernet Card is in your system Please contact support Q neuralynx com for any questions Your computer s optical Ethernet interface is preconfigured by Neuralynx But if it needs to be reconfigured the following requirements must be met 1 The Ethernet interface must have an IP address that is on the same subnet as the Digital Lynx SX In the following example t
32. ur Digital Lynx SX directly to an audio system or oscilloscope This includes individual electrodes stereotrodes tetrodes and Continuously Sampled Channels CSC s Currently the analog output labeling on the front panel of the SX Motherboard is different than the labeling in Cheetah Table 3 1 explains the difference SX Motherboard Label Cheetah Audio Output Control Label Analog Output 1 AcqSysteml Audio0 Left Channel Analog Output 2 AcqSysteml Audio0 Right Channel Analog Output 3 AcqSysteml Audiol Left Channel Analog Output 4 AcqSysteml Audiol Right Channel Revision 1 2 Digital Lynx SX User Manual 6 25 2013 Page 21 Table 3 1 Analog Outputs SX Motherboard Labels and Cheetah Labels In Cheetah high cut and low cut filters can be configured to isolate the data in your signal that you are most interested in All of these filter settings are also sent to the SX which currently supports only low cut filters from 0 1 Hz to 149 999 Hz If you set the low cut filter in Cheetah to 150 Hz or greater your data on the computer will be filtered at the larger cutoff but the analog outputs from the SX Motherboard will still be cut off at 149 999 Hz The SX analog outputs do not yet support high cut filtering Analog signals are output at the same rate at which they are sampled If your sampling rate is set to 40 KHz your analog output signal will be updated at a rate of 40 KHz 3 2 5 TS Clock Input and TS Clock Output Like the Digital Lynx
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