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MULTICHANNEL SYSTEMS W8-System Manual

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Wireless-System Manual

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  • Page 1 Wireless-System Manual...
  • Page 2 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.

  • Page 3: Table Of Contents

    Table of Contents Introduction About this Manual Welcome to the Wireless Recording System Important Information and Instructions Important Safety Advice Guarantee and Liability Operator's Obligations Hardware Headstage Receiver USB Interface Software Installing MC_Rack Starting MC_Rack Operating a Wireless System Experimental Setup Operating Modes Troubleshooting Troubleshooting...

  • Page 5: Introduction

    Introduction 1.1 About this Manual This manual comprises all important information about the first installation of the hardware and software, and about the daily work with the instrument. It is assumed that you have already a basic understanding of technical and software terms. No special skills are required to read this manual.

  • Page 6: Welcome To The Wireless Recording System

    The sampling rate is up to 40 kHz when using two electrode channels of the W4-System or four electrode channels of the W8-System and up to 20 kHz when recording on all channels of the W4- or W8-System. For the W16-System the sampling rate is 10 kHz when recording on all 16 channels or up to 20 kHz when recording on 4 or 8 channels.

  • Page 7: Important Information And Instructions

    Important Information and Instructions 2.1 Important Safety Advice Warning: Make sure to read the following advice prior to install or to use the device and the software. If you do not fulfill all requirements stated below, this may lead to malfunctions or breakage of connected hardware, or even fatal injuries.

  • Page 8: Guarantee And Liability

    Wireless System Manual 2.2 Guarantee and Liability The General conditions of sale and delivery of Multi Channel Systems MCS GmbH always apply. The operator will receive these no later than on conclusion of the contract. Multi Channel Systems MCS GmbH makes no guarantee as to the accuracy of any and all tests and data generated by the use of the device or the software.

  • Page 9: Hardware

    The A/D conversion with a variable sampling rate of 1, 2, 4, 5, 10 and 20 kHz when using all channels and 25, 32 and 40 kHz when using four or less than four channels of the W8-System or one or two channels of the W4-System. For the W16-System the maximal sampling rate is 10 kHz when using all 16 channels or up to 20 kHz when recording on 4 or 8 channels.
  • Page 10 Wireless System Manual The connector of the headstage is connected to the electrode which is implanted into the brain of the laboratory animal. The external connector of the implanted electrode is fixed, for example with dental cement. For maximum flexibility, MCS offers headstages with connections to all probes on request. The headstage records analog signals from the electrodes.

  • Page 11: Receiver

    Hardware 3.2 Receiver The receiver is the second element of the Wireless-System. The receiver of the Wireless-System receives the digitized signals sent from the headstage in a distance of about 5 m. The device is equipped with four antenna to prevent data loss. Two Lemo connectors on the front panel, labeled with D0 and D1 are available to feed in TTL signals for synchronization of the Wireless-System with other devices.

  • Page 12: Usb Interface

    Wireless System Manual 3.3 USB Interface The USB interface board is the third element of the Wireless-System. The interface board is connected to the receiver with a MCS Bus cable, which is about 5 m long. Longer cables are delivered on request. The advantage is that the interface board can be placed near to the data acquisition computer in a different room than the experimental laboratory and the test animal will not be disturbed in excess of the experimental setup and the scientist.

  • Page 13: Software

    Software 4.1 Installing MC_Rack The data acquisition computer with the MC_Rack program comes preinstalled and preconfigured by MCS for a flawless operation. You should contact your local retailer for assistance if you want to install additional hard- or software, or if you want to replace the computer, as incompatibilities of hardware components or software settings with MC_Rack may occur.
  • Page 14 Wireless System Manual Recommended operating system settings The following automatic services of the Windows operating system interfere with the data storage on the hard disk and can lead to severe performance limits in MC_Rack. These routines were designed for use on office computers, but are not very useful for a data acquisition computer.

  • Page 15: Starting Mc_Rack

    Software 4.2 Starting MC_Rack Connect, for example, a W8-System via USB high speed cable to the data acquisition computer. Open MC_Rack program. In "Edit" menu choose "Data Source Setup". The following “Channel Layout” dialog appears. Select USB-MEA in the left drop down menu of "Data Source". The W8-System "MCS WPA8 (S/N xxxx)"...
  • Page 16 Wireless System Manual There is an additional window in “Hardware” tab for the W8-System called “Wireless”, and the MC_Rack display shows an additional status line The “Sampling Frequency” of the system depends on the number of channels which are in use.
  • Page 17 From “Switch off” modus it is not possible to switch a headstage back on via software control. The blue LED mounted on the headstage of the W8-System indicates the recording phases. It can be switched into three modes via radio button. Select “Off” if the laboratory animal is disturbed by the light.
  • Page 18 50 mA per hour, that means the recording time is 30 minutes longer compared to the time when recording with 0 dB. However, the transmission power will decrease respectively. Starting the W8-System again after switching off via software To switch the headstage back on after pressing the button "Switch Off", the user has two possibilities: Use the infrared flasher and illuminate the receiver LEDs next to the battery connector.
  • Page 19 The following example describes how to change a W8-System to a W4-System. The W8-System is already connected to the data acquisition computer and installed.
  • Page 20 Wireless System Manual The installation lasts a few seconds. Please wait until the new driver has been loaded and the headstage is internally switched. If you install the W4 headstage for the first time, a hardware installation assistant will appear. Please follow the installation instructions.
  • Page 21 Software After the hardware installation process, please click the “Refresh” button in the “Data Source Setup” dialog to update hardware and software. The W4-System will now be available in the “Data Source Setup” dialog. Select the desired headstage device from the drop down menu and start working as described above.

  • Page 23: Operating A Wireless System

    Operating a Wireless System 5.1 Experimental Setup First step to set up an experiment with the wireless system is to implant an electrode into the laboratory animal. The electrode has to be fixed, for example with cement used in dental technic, to guarantee a tight position of the electrode in the desired area of the brain.
  • Page 24 Wireless System Manual To make sure that the animal and the headstage are set to the same electrical potential, a grounding connection is also necessary. A good ground option is usually a large conductor, such as a screw or a silver wire implanted under the skin of the animal. Experimental Setup Connect the receiver to the USB interface, and the USB interface to the data acquisition computer.

  • Page 25: Operating Modes

    Operating a Wireless System 5.2 Operating Modes Recording Mode Set up all components of the Wireless-System. Start MC_Rack and add the Wireless-System as data source. Please read chapter “Starting MC_Rack”. Define the amplifiers gain of 100 and select the sampling frequency in the “Hardware” tab. Make sure the storage battery is completely charged.
  • Page 26 Wireless System Manual Operating up to four Headstages rotatory with one Wireless-System It is possible to operate up to four different headstages connected to one Wireless-System in a rotatory system. The headstages are discriminated via frequency band for the radio communication.

  • Page 27: Troubleshooting

    Troubleshooting 6.1 Troubleshooting Most problems occur seldom and only under specific circumstances. In most cases, it is only a minor problem that can be easily avoided or solved. If the problem persists, please contact your local retailer. The highly qualified staff will be glad to help you.

  • Page 29: Appendix

    Appendix 7.1 Wireless-System Config The tool "Wireless-System Configuration" helps to configure new wireless headstages to a present setup and to arrange the assignments of headstages of several systems for simultaneous use. Additional it is possible to change the high pass settings of the respective Wireless-System. Important: Please always run the Wireless-System Config tool before you start working with a new headstage! Main Window...
  • Page 30 It is possible to connect, for example, one W4- and one W8-System. Please set the number of channels of your system from the "W-Type" drop down menu. Each connected system needs to have a "Frequency ID"...
  • Page 31 Appendix Click the button "Distribute default" to keep the "Frequency ID" in a line, ID 1 to ID 4. If you try to give the same frequency ID to different systems you get an error message. "Frequency ID each ID must be different!". Please choose another ID. When using a second data acquisition computer nearby to record from an additional wireless systems, please make sure that the frequency IDs differ from each other.
  • Page 32 Wireless System Manual To Do Checklist before start working with a Wireless-System in a new configuration: 1. Start the Wireless-System Config program. The main window opens. 2. When connecting more than one Wireless-System to the data acquisition computer the main window appears twice or more.

  • Page 33: Technical Support

    Appendix 7.2 Technical Support Please read the "Troubleshooting" part of the manual or help first. Most problems are caused by minor handling errors. Contact your local retailer immediately if the cause of the trouble remains unclear. Please understand that information on your hardware and software configuration is necessary to analyze and finally solve the problem you encounter.

  • Page 34: Technical Specifications

    Wireless System Manual 7.3 Technical Specifications The Wireless-System is a 4-, 8-, 16- or 32-channel wireless in vivo system with headstage, receiver and interface board. Analog signals are converted in digital data streams in real-time. Warning: The devices may only be used together with Wireless-Systems from Multi Channel Systems MCS GmbH, and only for the specified purpose.
  • Page 35 Appendix Storage battery Storage battery Lithium polymer, rechargeable Storage battery life until 4 channels: 3.5 hours (recording @ 20 kHz) recharge (100 mAmh) 8 channels: 2 hours (recording @ 20 kHz) 16 channels: 2 hours (recording @ 10 kHz) 32 channels: 1.3 hours (recording @ 5 kHz) for all channels: 80 days (in stand-by mode) Dimensions (W x D x H) 17 mm x 11 mm x 3 mm (30 mAh battery)

  • Page 36: Pin Layout

    Wireless System Manual 7.4 Pin Layout...

  • Page 37: Power Consumption

    multichannel systems Wireless Headstages Technical Specifications of Wireless Headstages W4-Headstage W8-Headstage W16-Headstage W32-Headstage Single row connector Omnetics or single row con. Omnetics connector Omnetics connector Technical Specifications Headstage Number of channels 4, 8, 16 or 32 Dimensions (W x D x H) 13 x 13 x 5 (w/o antennae in mm) 16 x 16 x 5...
  • Page 38 multichannel systems Wireless Headstages Technical Specifications of Wireless Headstages 30 mAh Battery 100 mAh Battery 200 mAh Battery 300 mAh Battery Technical Specifications Batteries Dimensions in mm Weight in g Length Width Height Weight 30 mAh battery 100 mAh battery 19.5 200 mAh battery 300 mAh battery...

  • Page 39: Multichannel Systems

    multichannel systems W4-Headstage Pin Layout of the 4-Channel Headstage for the Wireless Recording System W4-Headstage rear panel: W4-Headstage front panel: Connector for the electrode probe Connector for the storage battery. or the ME/W-Signal generator. W4-Headstage with single row socket Pin Layout of the single row precession socket (1.27 mm, round pin).
  • Page 40 multichannel systems W8-Headstage Pin Layout of the 8-Channel Headstage for the Wireless Recording System W8-Headstage rear panel: W8-Headstage front panel: Connector for the electrode probe Connector for the storage battery. or the ME/W-Signal generator. W8-Headstage with single row socket Connector for W8-Headstage with single row socket The connector mates with a standard single row 1.27 mm pin connector such as:...
  • Page 41 multichannel systems W8-Headstage Pin Layout of the 8-Channel Headstage for the Wireless Recording System W8-Headstage rear panel: W8-Headstage front panel: Connector for the electrode probe Connector for the storage battery. or the ME/W-Signal generator via the adapter ADPT-Om-ME/W-SG. W8-Headstage with Omnetics socket Connector for W8-Headstage with Omnetics socket The Omnetics connector mates...
  • Page 42 multichannel systems W16-Headstage Pin Layout of the 16-Channel Headstage for the Wireless Recording System W16-Headstage rear panel: W16-Headstage front panel: Connector for the electrode probe Connector for the storage battery. or the ME/W-Signal generator. W16-Headstage with Omnetics connector Pin Layout of the Omnetics connector A79039-001 (NSD-18-DD-GS) A79039-001 (NSD-18-DD-GS) Please orientate the headstage...
  • Page 43 multichannel systems W32-Headstage Pin Layout of the 32-Channel Headstage for the Wireless Recording System W32-Headstage rear panel: Connector for the W32-Headstage front panel: electrode probe or the ME/W-Signal generator. Connector for the storage battery. W32-Headstage with Omnetics connector Please orientate the headstage A79023-001 (NSD-36-DD-GS female, 4 guide posts) as shown on the scheme.
  • Page 44 Appendix 7.5 Power Consumption To determine the battery life-time divide the capacity of the battery in use by the current drawn by the headstage. Please see the following table for the power consumption. Example: Using a 100 mAh battery with a W4-System, sampling at 0.5 kHz with all four channels, you have a battery life of approximately 100 mAh / 13.8 mA = 7 h and 15 min...
  • Page 45 Tabelle1 Power consumption of the Wireless Headstage in different operation modes [mA] 11/12/19 Number of Channels: RF Output Power [dB]: Samplingfrequency [kHz]: 38,2 38,2 38,2 38,2 38,2 38,2 38,2 38,2 37,5 37,4 37,4 37,4 37,5 37,4 37,4 37,4 37,6 37,5 37,3 37,3 37,6 37,5 37,3 37,3 37,6 37,5 37,3 37,3 37,6 37,5 37,3 37,3...
  • Page 46 Tabelle1 Number of Channels: RF Output Power [dB]: Samplingfrequency [kHz]: 23,6 23,6 23,6 23,6 23,7 23,6 23,6 23,6 23,7 23,7 23,7 23,7 23,7 23,7 23,7 23,7 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,8 23,7 23,6 23,6 23,6 23,7 23,7 23,6 23,6 23,8 23,8 23,8 23,8...
  • Page 47 Tabelle1 Number of Channels: RF Output Power [dB]: Samplingfrequency [kHz]: 13,4 13,4 13,3 13,3 13,4 13,4 13,3 13,3 13,4 13,4 13,4 13,4 13,4 13,4 13,4 13,3 13,4 13,4 13,3 13,3 13,4 13,4 13,3 13,3 13,4 13,4 13,4 13,4 13,5 13,5 13,4 13,4 13,4 13,4 13,4 13,4 13,5 13,5 13,4 13,4 13,7 13,7 13,7 13,6...

  • Page 48: Me/W-Signal Generator

    Wireless System Manual 7.6 ME/W-Signal Generator...
  • Page 49 ME/W-SG Signal Generator for the ME-Systems and the Wireless-System The ME/W-Signal Generator is a very convenient tool for users of the Wireless-System and / or for users of ME-Systems. Use the ME/W-SG instead of setting up a complete experiment for training, controlling, and troubleshooting purposes.
  • Page 50 ME/W-SG Signal Generator for the ME-Systems and the Wireless-System Switch ME/W-SG on: Press the control button. Switch off: Press control button longer than two seconds. Switch Switch Control Signal Source Signal Type Position Position Button press n times ME/W-SG Artificial Sine Wave (1.75 mV) 0.005 Hz Note: sine waves <...

  • Page 51: Contact Information

    Appendix 7.7 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 have subscribed to the Mailing List, you will be automatically informed about new ssoftware releases, upcoming events, and other news on the product line.

  • Page 55: Index

    Index...
  • Page 56 Wireless System Manual...
  • Page 57 MCS Bus Cable ........8 TTL Signals ........... 8 Backpack Reference Electrode Battery Sampling Frequency Charging Set Signal Generator Software Experimental Setup Starting MC_Rack Data Display ........12 Data Source Setup ......12 Ground Electrode Hardware Tab ........12 Amplifier Gain..........12 Sampling Frequency ........

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W4-systemW16-systemW32-system

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