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Quantum Research Group E6248 User Manual

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E6248
U s e r M a n u a l

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Summary of Contents for Quantum Research Group E6248

  • Page 1 E6248 U s e r M a n u a l...
  • Page 2 OVERVIEW Standalone Board Mode A 24 key matrix panel is integrated into the E6248 together with LED key indicators. A 14-pin header allows connection to an external matrix panel if required. To operate the board, plug it into a live USB socket.

  • Page 3: Quick Start

    Double click on the QmBtn software icon to run the program: The software should automatically detect and configure the E6248 device — if not, please refer to the Troubleshooter (inside back cover). The main features of the software are described on the following pages.

  • Page 4: Main Window

    MAIN WINDOW The main window (QmBtn) displays device information and the status of each key (Cmd 0x05 and 0x8k). Open Setup Save Setup Recalibrate Selected Key from File to File Key Calibrating Key in Detection Key Number Key in Error Signal Reference Device Status shows Key Status shows status of...
  • Page 5 Main Window APPLICATION MENU File Create a new file Open Open a *.btn file Save Save the setup of the chip in the current *.btn file Save As Save the setup of the chip in a new *.btn file Exit Close the software Options Beep On Key Down...

  • Page 6: Settings Window

    SETTINGS WINDOW The settings window (QmSettings) allows you to easily visualise and modify the setup of the chip. Clicking the Read button in the main window will bring up the current setup of your chip. When a setup option is being modified, its value becomes bold and the Send button will become active to indicate that the setup displayed is different from the setup on the chip.
  • Page 7 Window NDIL — Negative Detection Integrator Limit allows enabling and disabling of keys and provides signal filtering. Higher values will provide more filtering but increase the response time of the key. FDIL — Fast Detection Integrator Limit also provides filtering, but has less effect on response time.
  • Page 8 E6248 SCHEMATIC Note: a full PDF version of this simplified schematic, together with board layouts, is available www.qprox.com/toolbox...

  • Page 9: Graph Window

    GRAPH WINDOW The graph window (QmGraph) displays the analog signal for a selected key. This is a great tool for determining noise level, setting the correct sensitivity and setting the level of filtering required. The QmGraph window shows the signals for a specific key (select a key by clicking its button in the main window) Signal Sets the...

  • Page 10: Board Details

    PC. Matrix Connector (J2) The E6248 has a header (J2) to allow connection to an external keyboard. The pinout is described below. The header provides the X-Y scanning of the matrix electrode. X lines drive charge into the matrix, and the Y lines conduct the charge back out. If an external keyboard is used it is a good idea to disconnect the on-board matrix.
  • Page 11 BOARD DETAILS SPI Direct Port (J5) Header J5 gives access to all the signals useful for communicating with the chip. The pinout of the connector is described below: Name +3.3V /DRDY MOSI MISO Line Sync Line Sync (J5, pin 9) External Noise Sync: Feed a TTL or 5V CMOS synchronization pulse into pin 9 of J5 with respect to GND.
  • Page 12 USB Connector (J3) SPI Direct Port (J5) LED Behaviour (OPT2) Oscilloscope Sync (SSYNC) Communication Port Select (OPT1) Links (LK12..LK15) Matrix Connector (J2) Links (LK1..LK11)

  • Page 13: Software Installation

    For very latest release of QmBtn, check our web site at www.qprox.com/toolbox Install the USB Drivers With the supplied CD-ROM in your CD drive, connect the E6248 to your PC with the supplied USB cable. Windows will display the Found New Hardware Wizard for the PICDEM FS USB.
  • Page 14 Cables or Board too Close to Strong Noise Source (such as a power line or switching noise source) Increase the distance from E6248 to the noise source Place a grounded metal shield between the noise source and the QMatrix™ board QMatrix™...
  • Page 15 Development: Samuel Brunet, Matthew Trend w w w . q p r o x . c o m Corporate Headquarters North America 1 Mitchell Point 651 Holiday Drive Bldg. 5 / 300 Ensign Way, Hamble Pittsburgh, PA 15220 Southampton SO31 4RF United Kingdom +44 (0)23 8056 5600 412-391-7367...

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