MEA Switch User Manual - ALA Scientific Instruments
Contents
1. 00000 Forconnectinga For connecting an _0000O computer via RS232 external power supply serial port Male 9 pin D SUB MEAS4to2 BNC Connectors Channel number 64 fe fe 128 Input Output 63 127 62 126 61 fe Ce 125 The illustration Experimental setup shows a suggested setup for four MEA1060 amplifiers You can define your custom setup as well 4 1 Operating the MEA Switch Operating the MEA Switch Controlling the MEA Switch The 120 channels from two MEA1060 amplifiers are reduced to 60 channels You can decide from which of the two amplifiers a channel should be picked The channel selection is mutually exclusive that means channels with the same channel number for example No 21 cannot be picked from both amplifiers If you use an MC_Card with 128 channels you can use a MEAS4 2 for two pairs of MEA1060 amplifiers The Controlling the MEA Switch is computer controlled via the serial port You can easily make your selection with the MEA_Switch program The other possibility recommended only for advanced users is to set up their own program See Firmware Description in the Appendix for details Double click the MEA_Switch exe file MEA_ Switch starts Click Test Connection to test the connection to the MEA Switch hardware If the connection is fine the message OK appears in the message box If the message Failed appears check all connections and make sure there is a power s2. 2 MEA amplifiers MEA recording system for upright microscopes 60 electrode channels MEA recording system for upright microscopes 60 electrode channels MEA recording system for inverted microscopes with advanced perfusion 60 electrode channels MEA recording system for inverted microscopes with advanced perfusion 60 electrode channels MEA recording system for upright microscopes with advanced perfusion 60 electrode channels MEA recording system for upright microscopes with advanced perfusion 60 electrode channels MEA recording system for inverted microscopes 120 electrode channels MEA recording system for inverted microscopes 120 electrode channels MEA recording system for upright microscopes 120 electrode channels MEA recording system for upright microscopes 120 electrode channels Product Number MEA60 Inv System MEA60 Inv 2 System MEA60 Up System MEA60 Up 2 System MEA60 Inv System E MEA60 Inv 2 System E MEA60 Up System E MEA60 Up 2 System E MEA120 Inv System MEA120 Inv 4 System MEA120 Up System MEA120 Up 4 System Appendix Description Complete with 5 MEAs data acquisition computer with MC_Card MEA1060 Inv amplifier TCO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 2 x MEA1060 Inv amplifier MEAS2 1 TCO2 power supply and accessories Complete with 5 MEAs data acquisition comp
3. channel assign 128 channel MC_Card ment template file you can configure the a channel layout for two Operating mode of the pairs of MEAs separately program Installing the Software System requirements Software One of the following Windows operating systems is required Windows 98 ME NT 2000 or XP English and German versions supported Other language versions may lead to software errors Hardware Free RS232 port Installing the software Please check the system requirements before you install the software Multi Channel Systems cannot guarantee that the software works properly if these requirements are not fulfilled Important Please make sure that you have full control over your computer as an administrator Otherwise is possible that the installed software does not work properly Double click Setup exe on the installation volume The installation assistant will show up and guide you through the installation procedure Follow the instructions of the installation assistant 3 3 First Use of the MEA Switch Setting Up and Connecting the MEA Switch Warning Do not mismatch the polarity of the external power supply A wrong connection may lead to fatal damage of the device Use the lowest possible input supply voltage Do not exceed the maximum input supply voltage of 12 V The higher the input supply voltage the more heat is produced by the device Important If you use a complete MEA System the MEA amplifier
4. expansion Pin 1 GNDP power ground GNDP power ground Pin 2 GNDS signal ground GNDS signal ground Pin 3 66 Channels 1 64 Channels 65 128 Pin 67 Positive voltage supply Positive voltage supply Pin 68 Negative voltage supply Negative voltage supply Note The analog channel 64 is available only if the digital input channel is not selected in the Channel Layout dialog box of the MC_Rack program Please note that channels 61 to 64 and 125 to 128 are not used for the MEA System Channels 61 to 63 can be used as additional analog input channels A1 to A3 via the additional BNC con nectors Firmware Description You can control the MEAS2 1 and MEAS4 2 with a Terminal program There are several shareware programs available on the internet You can use the following information to write your own program for controlling the MEAS2 1 and MEAS4 2 as well Serial communication Serial port parameters 57600 Baud 8N1 no handshake All commands are single characters some followed by one or more hexadecimal numbers Commands must be terminated by either n or r Hexadecimal numbers must be two bytes Response of the device is a single character 16 5 4 Appendix Controlling the MEAS2 1 and MEAS4 2 The internal switches are divided in groups of 8 The 8 bit code to program these 8 switches for example 01100101 has to be reversed e 9 10100110 first and then translated into hexadecimal 2 bit code The order of the switches is
5. from channel 1 to 64 MEAS2 1 That means group 1 is defined from 1 to 8 group 2 from 9 to 16 and so on For MEAS4 2 channels 65 to 128 come first and then channels 1 to 64 That means group 1 is defined from 65 to 72 group 2 from 73 to 80 and so on The total group number has to be specified in hexadecimal 2 bit code as well that is 08 for the 8x8 channels of MEAS2 1 and 10 for the 16x8 channels of MEAS4 2 Command Description Response v get version a b t test t connection d lt total set channel 0 ok group byte selection not 0 error number gt lt switch list gt Example You type The Explanation response is v a The current version is a t t Connection established dosffffffffffffffff 0 The syntax of the command is ok All bits of the 8 groups have been set to 1 Contact Information Local retailer Please see the list of official MCS distributors on the MCS web site User forum The Multi Channel Systems User Forum provides the opportunity for you to exchange your experience or thoughts with other users worldwide Mailing list If you are subscribed to the General Electrophysiology Mailing List you will be automatically informed about new software releases upcoming events and other news on the product line You can subscribe to the list on the MCS web site www multichannelsystems com 17 5 5 Ordering Information MEA Switch User Manual This chapter shows you a sel
6. 3 1 First Use of the MEA Switch First Use of the MEA Switch Welcome to the MEA Switch The MEA Switch allows you to acquire data from 60 single channels from two MEA1060 amplifiers If you have a 128 channel MC_Card you can even pick 128 channels in total from two MEA pairs with the MEA Switch for four amplifiers MEAS4 2 Selected channels are combined to a single Electrode Raw Data stream that is delivered to the MC_Card of the data acquisition computer by a 68 pin MCS High Grade cable This is useful if you do not need all 60 electrodes on an MEA because the cell culture or the slice does not cover the whole MEA but rather single electrodes The channel selection is mutually exclusive that means if you pick channel 21 on one MEA you cannot select channel 21 on the other pair The MEA Switch is software controlled by the program MEA_Switch via the serial port You can also use a Terminal or a custom program to control the MEA Switch Please contact Multi Channel Systems for more information The MEA Switch does not replace a Signal Grounding Unit That means the channels that are not selected are only removed from the input data stream but they are not grounded If you have bad electrodes that produce noise the noise can still interfere with your input signals You need an external power supply for operating the MEA Switch for example the PS20W The following pictures show the rear panel of the MEA Switch MEAS4 2 with optional B
7. 55 ss 76 ss 16 26 36 46 56 66 76 86 117 57 67 77 ez 17 27 37 47 57 67 77 87 28 2e 46 58 60 76 28 38 as se es 78 All Apply PA B 4 Choose all electrodes that you are interested in from MEA 2 Again selected electrodes are highlighted in red MEA 1 MEA 2 21 31 41 51 61 7 i I Os 61 171 2 22 32 42 EN Id 82 Ji N 73 83 74 84 65 75 85 16 26 36 46 56 66 76 86 a7 27 37 47 57 67 77 87 28 38 48 se 68 78 All Apply all 5 Click Apply to record from the selected electrodes MEA 1 MEA 2 eu gal ntfs ox 7 EEE een dadaran Baleleizie aaa aaa aaa daras ar TEJ el ZE Bl Eel Eel va E we Eu Er Er Er 774 EA ba ka Es Ec ve All Apply N All All selected channels from both MEAs are now transferred to the data acquisition system Any channel that was not selected at all is recorded from MEA 1 12 4 4 4 5 Operating the MEA Switch If you have chosen the same electrodes on both MEAs a warning message will show up and ask you to unselect all electrodes that have been selected twice Download Download OK The following channels are selected on both MEAs You can only select a channel on one of the EAs Please deselect the channels on one side 52 53 54 S
8. NC connectors with the output channels the serial port and the power supply inputs and a standard MEA Switch 4 2 connected to four MEA amplifiers 3 2 MEA Switch User Manual The MEA_Switch program features two operating modes Toggle mode Toggle each channel button for switching the channels from one amplifier to the other Select mode Pick all active channels from one MEA first then switch to all 60 channels of the second MEA and select all active channels from this one and then apply the selection with a single mouse click MEA_Switch overview Each channel of the data i Click Download to trans stream is either assigned oR 3 7 x fer the channel assign p Maz to the left or the right ja lala alle m ment to the MEA switch MEA fee wjelzje eajsajefelfel el S PPP vabe salao alla Click Test Connection to 14 24 34 44 54 04 74 i0 A Lab i the same channel on 5 Sis eis ls comet est the connection to both MEAs i FEE Sa je Es 48 i the MEA switch The buttons represent CAEAEACACA CAA eee 20 130 40 50 am single channels Select the serial porn to Click a button to select ral which the MEA switch is or deselect a channel connected here WAS You can print save and ajaj elsa 7 sof anf ee 0 load the channel assign HEEEE ea 73 Jas ment METETE ea 74 04 i 10 25 35 es af os 75 05 z R MEESE A File name and path of the With a MEAS4to2 and a DACCI h assign APTA AA current
9. click All to select all channels A selected channel button appears pressed in The corresponding channel on the other pair is deselected Click a selected channel again to deselect it The corresponding channel on the other pair is selected 3 Click Download to apply the changes MEA 1 alalals lalr 12 22 32f42 52 6272182 13 23 33 43 53 63 7383 me 44 54 64 74 E E 45 55 65 75 85 16 26 36 le als I17 27 371 47 57 67 77 87 28 38 48 58 68 78 All All 10 4 3 Operating the MEA Switch Selecting Channels With this method you mark the electrodes of both MEAs that are fine and that you want to record All other electrodes are chosen from the default MEA1060 amplifier connected to port 1 Use MC_Rack to see the signals and decide which electrode you like to use for recording You can start to select channels from the MEA 1 amplifier as in the example or with the MEA 2 amplifier The order of user actions is fixed in the Select mode 1 selecting channels from one amplifier 2 selecting channels from the other amplifier 3 applying downloading the selection If you like to change the selection later restart the procedure from step 1 The Toggle mode allows you to toggle each channel button for switching single channels from one amplifier to the other See the chapter Toggling Channels for details Switch to MEA 1 by clicking All below the MEA 1 button array All channels from MEA 1 are now
10. ection of MCS products For information on the whole product range pricing and ordering information please contact your local retailer MEA Switch Product MEA Switch for 4 amplifiers MEA Switch for 2 amplifiers MEA amplifiers Product MEA amplifier for inverted microscopes MEA amplifier for upright microscopes MEA amplifier with blanking circuit for inverted microscopes MEA amplifier with blanking circuit for upright microscopes Product Number MEAS4 2 MEAS2 1 Product Number MEA1060 Inv MEA1060 Up MEA1060 Inv BC MEA1060 Up BC Description The MEA Switch allows you to acquire data from 60 single channels from two MEA1060 amplifiers If you have a 128 channel MC_Card MEA 120 System you can even pick 128 channels in total from two MEA pairs with the MEA Switch for four amplifiers MEAS4 2 The selected channels are combined to one Electrode Raw Data stream that is delivered to MC_Card by a 68 pin MCS High Grade Cable Description Probe interface and 60 channel pre and filter amplifier with custom gain and bandwidth Probe interface and 60 channel pre and filter amplifier with custom gain and bandwidth The blanking circuit prevents the amplifier from getting saturated and thus prevents stimulus artifacts 18 MEA Systems Product MEA recording system for inverted microscopes 60 electrode channels MEA recording system for inverted microscopes 60 electrode channels
11. etting Up or Loading a Template If you have an experimental setup with similar channel assignments it may be useful to save a channel selection for later use Click Save The Save As dialog box opens Browse your folders and enter a file name Click Save The channel selection is saved with the specified file name The file extension is cfg The file name and path of the current template is displayed Loading a template Click Load The Open dialog box opens Browse your folders and select an appropriate MEA_Switch Config file cfg Click Open The channel selection of the template is applied The file name and path of the current template is displayed Printing the Channel Assignment In the data acquisition and analysis program MC_Rack you cannot see from which amplifier the data is acquired The data is treated as if it was acquired from one amplifier Therefore you should print the channel layout in MEA_Switch to document your experiment Click Print Click Preview to see the printed page on screen then click Print The standard Print dialog box appears Select a connected Printer and confirm with OK The active channel assignment is printed Selected channels are printed in Gray 13 MEA Switch User Manual 4 6 Channel Assignment Download When you have set up the desired channel assignment you have to transfer the settings to the MEA Switch Note You have to download the assignment each time you have swi
12. his Manual Scope of Delivery Important Information and Instructions Operator s Obligations Guarantee and Liability Important Safety Advice First Use of the MEA Switch Welcome to the MEA Switch Installing the Software Setting Up and Connecting the MEA Switch Operating the MEA Switch Controlling the MEA Switch Toggling Channels Selecting Channels Setting Up or Loading a Template Printing the Channel Assignment Channel Assignment Download Appendix Technical Specifications Pin Layout Firmware Description Contact Information Ordering Information Index _ PR ww UY No u Ul 10 11 13 13 14 15 15 16 16 17 18 21 1 1 1 2 Introduction Introduction About this Manual This manual comprises all important information about the first installation and the proper usage of the MEA Switch It is assumed that you have a basic understanding of technical terms but no special skills are required to read this manual Make sure you read the Important Information and Instructions prior to install or to operate the MEA Switch Scope of Delivery MEAS2 1 or MEAS4 2 main device Serial null modem cable CD with MEA_Switch program User Manual gt gt 2 1 2 2 Important Information and Instructions Important Information and Instructions Operator s Obligations The operator is obliged to allow only persons to work on the device who are familiar with the safety at work and accident
13. multichannel systems MEA Switch User Manual Information in this document is subject to change without notice No part of this document may be reproduced or transmitted without the express written permission of Multi Channel Systems MCS GmbH While every precaution has been taken in the preparation of this document the publisher and the author assume no responsibility for errors or omissions or for damages resulting from the use of information contained in this document or from the use of programs and source code that may accompany it In no event shall the publisher and the author be liable for any loss of profit or any other commercial damage caused or alleged to have been caused directly or indirectly by this document 2003 2005 Multi Channel Systems MCS GmbH All rights reserved Printed 2005 02 11 Multi Channel Systems MCS GmbH Aspenhaustra e 21 72770 Reutlingen Germany Fon 49 71 21 90 925 0 Fax 49 71 21 90 92 5 11 info multichannelsystems com www multichannelsystems com Microsoft and Windows are registered trademarks of Microsoft Corporation Products that are referred to in this document may be either trademarks and or registered trademarks of their respective holders and should be noted as such The publisher and the author make no claim to these trademarks 1 1 1 2 2 1 2 2 2 3 3 1 3 2 3 3 4 1 4 2 4 3 4 4 4 5 4 6 5 1 5 2 5 3 5 4 5 5 Table Of Contents Introduction About t
14. omponents Catastrophic events due to the effect of foreign bodies or Acts of God 2 3 MEA Switch User Manual Important Safety Advice Warning Make sure to read the following advice prior to installations of the device If you do not fulfill all requirements stated below this may lead to malfunctions breakage or even fatal injuries Obey always the rules of local regulations and laws Only qualified personnel should be allowed to perform laboratory work Work according to good laboratory practice to obtain best results and to minimize risks The product has been built to the state of the art and in accordance with recognized safety engineering rules The device may only be used for its intended purpose be used when in a perfect condition Improper use could lead to serious even fatal injuries to the user or third parties and damage to the device itself or other material damage Malfunctions which could impair safety should be rectified immediately This device is no medical instrument and must not be used on humans High Voltage When connecting an external power supply do not mismatch the polarity of the power supply A wrong connection may lead to fatal damage of the device Use the lowest possible input supply voltage Do not exceed the maximum input supply voltage of 12 V The higher the input supply voltage the more heat is produced by the device Electrical cords must be properly laid and installed The length and q
15. pin MCS High Grade Cable 3 m 68 pin MCS Hilgh Grade Cable 20 Product Number GND64 SD MEA Product Number C68x0 5M C68x1M C68x3M Description Placed between the amplifier and MC_Card grounds unused channels by sliding switches for preventing noise Placed between the amplifier and MC_Card permits to select any channel does not interfere with the data acquisition Description For MEA or ME Systems Index 6 Index 21 MEA Switch User Manual Baud rate Buttons channel buttons C Channel Assignment Downloading Printing Channel Assignment Channels Selecting Toggling Choosing channels Connecting Contact Information D Download F Failed Firmware Description l Installing Hardware Software IPS10W M 22 10 10 16 11 14 13 14 11 10 11 17 14 16 aN MC_Card O OK P Pin Layout Preview Printing R RS232 S Selecting Channels Setting up Software Installing T Template Terminal program Test Connection Toggling Channels W Windows supported versions 16 13 13 15 10 11 13 16 10
16. prevention regulations and have been instructed how to use the device are professionally qualified or have specialist knowledge and training and have received instruction in the use of the device have read and understood the chapter on safety and the warning instructions in this manual and confirmed this with their signature It must be monitored at regular intervals that the operating personnel are working safely Personnel still undergoing training may only work on the device under the supervision of an experienced person Guarantee and Liability The General conditions of sale and delivery of Multi Channel System MCS GmbH always apply The operator will receive these no later than on conclusion of the contract Guarantee and liability claims in the event of injury or material damage are excluded when they are the result of one of the following Improper use of the device Improper installation commissioning operation or maintenance of the device Operating the device when the safety and protective devices are defective and or inoperable Non observance of the instructions in the manual with regard to transport storage installation commissioning operation or maintenance of the device Unauthorized structural alterations to the device Unauthorized modifications to the system settings Inadequate monitoring of device components subject to wear Improperly executed and unauthorized repairs Unauthorized opening of the device or its c
17. tched on the switch The default assignment that is active after the switch has been switched on is that the channels of the left MEA s MEA 1 and 3 are selected 1 Make sure the device has been switched on and the connection has been established Click Download Apply button in the Select mode Please note that the order of use actions is fixed in the Select mode that is the Apply button is only available if all necessary steps have been made see Selecting Channels 2 The successful transfer is confirmed by a message Download Download OK 14 5 1 Appendix Appendix Technical Specifications Operating temperature 10 40 C Storage temperature 0 50 C Dimensions WxDxH 220 mm x 235 mm x 52 mm Weight 1050 g Supply voltage 6 V min 5 7 V max 12 V Supply current Number of input channels Input voltage Input impedance Number of output channels Output voltage Output impedance Interface MEA_Switch program Operating system 2 mA to 38 mA 2 x 64 MEAS2 1 2x 64 2 x 64 MEAS4 2 5V 33 kQ 64 MEAS2 1 2 x 64 MEAS4 2 5V 300 Q paralleled by 1 nF low pass RS232 serial port 57600 baud 8 N1 no handshake Windows 98 ME NT 2000 or XP English and German versions supported Two versions are available MEAS2 1 and MEAS4 2 15 5 2 5 3 MEA Switch User Manual Pin Layout Electrode analog input 68 Pin MCS Standard connector JOGOO OJOJOJOJO 128 ch
18. transferred to the data acquisition system MEA 1 MEA 2 21 31 41 51 61 71 21 37 1 57 67 77 12 22 32 42 52 62 72 62 12 22 32 2 52 62 72 82 13 23 33 43 53 63 73 es 13 23 33 3 53 631 73 3 14 24 34 44 54 64 74 84 14 24 34 44 54 64 74 24 15 25 35 45 55 es 75 es 15 25 35 5 55 65 75 55 16 26 36 46 56 66 76 ss 16 26 35 46 55 66 76 86 17 27 37 47 57 67 77 ez 17 27 37 7 571671 771 87 28 38 48 58 68 78 28 38 48 5 68 78 Apply All 2 Click all electrodes that you are interested in Selected electrodes are highlighted in red MEA 1 MEA 2 21 31 41 51 61 71 21 31 1 51 611 711 12 22 az 42 a ddr 13 23 33 as Ea 63 7a oa a alla Ss es 75 os 54 25 25 45 55 65 75 55 66 ze 86 tef 26 36 zal sal eel zel ja aaa a 78 22 el el sel es rel All Apply all 11 MEA Switch User Manual 3 Switch to MEA 2 by clicking All below the MEA 2 button array All channels from MEA 2 are now transferred to the data acquisition system MEA 1 MEA 2 EMP 21 31 41 51 61 71 12 22 32 42 ES 2 12 22 32 42 52 62 72 82 gada 3 13 23 33 43 53 63 73 83 To 8 14 24 34 44 54 64 74 84 115 Ess es 75 es is 25 35 as ss es 75 es E
19. uality of the cords must be in accordance with local provisions Only qualified technicians may work on the electrical system It is essential that the accident prevention regulations and those of the employers liability associations are observed Each time before starting up make sure that the mains supply agrees with the specifications of the product Check the power cord for damage each time the site is changed Damaged power cords should be replaced immediately and may never be reused Check the leads for damage Damaged leads should be replaced immediately and may never be reused Do not try to insert anything sharp or metallic into the case Do not short circuit the outputs of the device Liquids may cause short circuits or other damage even could lead to fatal injuries Keep the device and the power cords always dry Do not handle it with wet hands Make sure the device and your experiment are set up in a way that makes it impossible that any liquid spills onto the device or flows into the device from the surface of the table Requirements for the installation and during operation The device must be set up on a rigid vibration free base The device produces heat and can get hot during operation Do not touch the device during operation and do not store flammable materials nearby Do not place anything on top of device and do not place it on top of another heat producing device Do not open the case of the device 4
20. upply connected power is usually supplied by the data acquisition computer connected via the 68 pin MCS High Grade cable Try another serial port if the connection cannot be established Test Connection OK Port COM2 v If the connection has been established select the operating mode Toggle or Select Selection Mode Toggle select Start data acquisition for example with MC_Rack Choose the channels of interest from the amplifiers by clicking the corresponding buttons Download the channel selection to the MEA Switch Apply button in the Select mode Download Download OK Preview and Print the channel assignment for documentation Save the assignment as a template for later use if you like 4 2 MEA Switch User Manual Toggling Channels Each channel of the data stream is either assigned to the left or the right MEA You cannot select the same channel from both MEAs The buttons represent single channels and have a toggle function Click a button to select or deselect a channel If you have a 128 channel MC_Card you can configure the channel layout for two pairs of MEAs separately The Select mode allows you to pick all active channels from one MEA first then switch to all 60 channels of the second MEA and select all active channels from this one and then apply the selection with a single mouse click See the chapter Selecting Channels for details Click a button to select a single channel or
21. uter with MC_Card MEA1060 Up amplifier TCO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 2 x MEA1060 Up amplifier MEAS2 1 TCO2 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card MEA1060 Inv amplifier TCO2 PHO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 2 x MEA1060 Inv amplifier MEAS2 1 2 x TCO2 2 x PHO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card MEA1060 Up amplifier TCO2 PHO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 2 x MEA1060 Up amplifier 2 x TCO2 2 x PHO1 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card MEA1060 Inv amplifier TCO2 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 4 x MEA1060 Inv amplifier MEAS4 2 2 x TCO2 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card MEA1060 Up amplifier TCO2 power supply and accessories Complete with 5 MEAs data acquisition computer with MC_Card 4 x MEA1060 Up amplifier MEAS4 2 2 x TCO2 power supply and accessories 19 MEA Switch User Manual Accessories Product Channel Grounding Unit MEA Signal Divider Spare Parts Product 0 5 m 68 pin MCS High Grade Cable 1 m 68
22. will usually be powered by the isolated power supply IPS10W that is integrated into the data acquisition computer If you are using a MEA Switch you will have to connect an external power supply to the MEA Switch for operating the amplifier s The power is then distributed along the MCS 68 Pin High Grade Cable Please ask your local retailer for more information on the setup Connect the MEA Switch to a computer via the RS232 serial port with a standard null modem cable see illustration MEAS4 2 rear panel Connect the MEA Switch output to the MC_Card in your computer via the provided 68 pin MCS Standard cable see illustration MEAS4 2 rear panel Connect the 2 4 MEA1060 amplifiers to the MEA Switch via the provided 68 pin MCS Standard cables see illustration MEAS4 2 front panel Make sure that both cables are oriented to opposite sites to avoid a mechanical interference of the connectors see photograph Connect the device to an external power supply Optional Eight additional inputs standard BNC connectors for the remaining eight free channels can be obtained on demand see illustration MEAS4 2 BNC Connectors MEA Switch User Manual MEAS4to2 front panel Input MEA1 Input MEA2 00000 00000 00000 00000 99000 240000 9000 OOOO Input MEA3 Input MEA4 90009 90000 908009 90000 90000 OOOO OOOO OOOO MEAS4to2 rear panel Output MEA1 2 00000 90000 90000 OOOOO 6V GND 6V 00000000 Output MEA3 4 0000000 ee
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