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eDAQ e-corder User Manual

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e - c ord e r U s e r M a nu a l
Power
Status
Trigger
e-corder
®
e-corder
201
Output
Power
Status
Trigger
Input 2
Input 1
401
Output
Input 2
Input 1
www.eDAQ.com
Input 3
Input 4

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Summary of Contents for eDAQ e-corder

  • Page 1 - c ord e r U s e r M a nu a l e-corder Input 2 Input 1 Power Output Status Trigger Input 2 Input 3 Input 1 Power Output Status Input 4 Trigger e-corder www.eDAQ.com ®...
  • Page 2 Chart and Scope are trademarks of ADInstrumets Pty All rights reserved. No part of this document may be Ltd and are used under license by eDAQ. EChem is reproduced by any means without the prior written a trademarks of eDAQ Pty Ltd.

  • Page 3: Table Of Contents

    Pod Input Connectors 10 Analog Output 12 Glossary Trigger 13 The Back Panel 14 Index C Output 14 USB Port 15 License & Warranty Auxiliary Ground 15 Serial Port 15 Power 15 Self-Test 16 USB Connection 17 Connecting the e-corder 17 e-corder...
  • Page 4 e-corder...

  • Page 5: Overview

    C H A P T E R O N E Overview Your e-corder recording unit, together with the Chart and Scope software, provides a versatile data recording and analysis system when used with a Windows or Macintosh computer. This chapter provides an overview of the e-corder system and describes its basic features.

  • Page 6: Unpacking

    The Hardware ▲ WARNING! The e-corder 201 (or 401) hardware unit is a two, (or four) channel Applying more than 15 data acquisition system that accepts analog voltage signals up to V to the analog inputs ±10 V.

  • Page 7: The Software

    Because the e-corder unit sits outside the computer, connected via a USB interface, it is subject to less electrical interference than an internal data acquisition card. It is also easily transferred from one computer to another. Apart from amplifying and filtering the signal the e-corder has considerable processing power and performs many tasks that are necessary during data recording.

  • Page 8: Other Hardware

    • USB installed Other Hardware eDAQ has a range of optional preamplifiers that can be connected to the e-corder . eDAQ Amps are automatically recognized and configured by the software. The range of eDAQ Amps includes the: • pH/mV Amp, suitable for connection of pH, ion selective, and potentiometric (ORP) electrodes •...

  • Page 9: Other Software

    Other Software PowerChrom software (chromatographic data collection and analysis) and EChem software (electroanalytical chemistry experiments) are also available for use with your e-corder system. See our web site at www.eDAQ.com for more information. Chapter 1 — Overview...
  • Page 10 e-corder...

  • Page 11: Setting Up

    C H A P T E R T W O Setting Up This chapter starts with the e-corder internal self-test, then looks at how to connect up your e-corder to a computer. It discusses the USB connection in some detail.

  • Page 12: The E-Corder

    The e-corder First familiarize yourself with some of the external features of your e-corder before connecting it to a power source. The rest of this chapter discusses the different features, connectors, and indicators of the e-corder 201 and e-corder 401.

  • Page 13: Indicator Lights

    There are three lights that indicate when power is on, recording status, and trigger state. All three should turn on at least briefly when the e-corder is first turned on. The Power indicator should glow blue and then stay lit, the Status indicator should flash yellow and then stay green, and the Trigger indicator should flash yellow and then turn off.

  • Page 14: Bnc Input Connectors

    The impedance of the e-corder inputs is one megohm (1 MΩ). If you are using high impedance transducers (> 10 kΩ) you should consider using the GP Amp or pH Amp, which provide input impedances of 10 and 10 Ω...
  • Page 15 If a shield is also required then connect it to the ‘Digital Ground’ position. The SCL and SDA pin positions are special control lines for eDAQ Pods — you should never connect other devices to these. Please take care when wiring transducers or other equipment to the Pod connectors.

  • Page 16: Analog Output

    ≤+10 V circuit. – ≤–10 V e-corder, the transducer (or other equipment) or both. Such damage is not covered under the terms of your warranty. Analog Output The e-corder can produce an analog voltage signal via its Output sockets. The output is bipolar, that is, mirror image waveforms are provided by the Output + and Output –...

  • Page 17: Trigger

    Control of the output is via a 14 bit DAC (digital–to–analog convertor) inside the e-corder, that is configured by using the Stimulator commands in the Chart and Scope software. Trigger The trigger connector (external trigger) enables an external signal to be used to synchronize recording with an external device.

  • Page 18: The Back Panel

    C output is a special port designed to connect to eDAQ Amps made by eDAQ. It supplies power and communications. An e-corder can have as many eDAQ Amps connected as it has input channels (two or four), connected in a daisy-chain arrangement. Further details can be found in your specific eDAQ Amp Manual located on the Install CD.

  • Page 19: Usb Port

    It should NOT be used to connect to your computer! Power The power switch on the back panel of the e-corder turns the e-corder on and off. A 3-pin IEC power socket is used to connect your e-corder Chapter 2 — Setting Up...

  • Page 20: Self-Test

    The e-corder performs a diagnostic self-test each time it is switched on, whether or not it is connected to a computer. To test that your e-corder is functioning properly when you turn it on, follow the instructions below: 1.

  • Page 21: Usb Connection

    (this will void your rights under warranty). USB Connection The e-corder is fitted with a USB (universal serial bus) port, with which it is connected to a USB 1.1 or 2 compliant computers. All the devices on a USB network have a common communication pathway, if you have many devices with a lot of information to transfer, they compete for capacity (bandwidth).

  • Page 22: E-Corder

    Stop sampling and quit the software before disconnecting an e-corder. You can safely turn on or off, or disconnect or reconnect, an e-corder while the computer remains on, as long as the Chart or Scope software is off. Although USB is a ‘hot–pluggable’ standard, Windows 2000 may bring up an alert if you attempt to disconnect the e-corder while the computer is on.

  • Page 23: A Technical Aspects

    This appendix gives an overview as to how the e-corder works. You do not need to know the material here to use your e-corder, but it may be of interest to the technically minded. You should not use this information as a service manual: user modification of the e-corder voids your rights under warranty.
  • Page 24 A single 16-bit DAC (digital-to-analog converter) is used to provide an analog output or stimulation capability through the analog outputs of the e-corder (marked ‘Output’ on the front panel). Output pulse frequency is independent of the analog input sampling rate. The output of the DAC is fed through a programmable attenuation network to produce different output ranges.

  • Page 25: E-Corder Accuracy

    The outputs are capable of driving up to 12 mA into a load. e-corder Accuracy Each e-corder is factory calibrated to an accuracy of better than 0.1%. Some ‘zero drift’ or ‘gain drift’ can occur with time. The unit can be Figure A–2 Block diagram of the e-corder 401.
  • Page 26 Any offset on the raw signal will be effectively removed by this process. More extensive calibration can be performed in the Chart software by use of the Multipoint Calibration feature which can also correct for a non–linear signal. e-corder...
  • Page 27 The computer refuses to boot with the e-corder connected, or the computer can’t find the e-corder • The e-corder may be off, or the power is switched off at the wall, the power cable is not connected firmly, or a fuse has blown —...
  • Page 28 Ensure that the cable is firmly attached at both ends and try again. If there is still a problem, try a new cable. The e-corder doesn’t work or the program crashes after a short time • A poor connection between e-corder and computer, or bad cable.

  • Page 29: B Troubleshooting

    Appendix B — Troubleshooting...
  • Page 30 e-corder...
  • Page 31 Appendix B — Troubleshooting...
  • Page 32 e-corder...

  • Page 33: C Specifications

    A P P E N D I X Specifications e-corder Specifications Input Number of inputs: 2 (eDAQ 201), 4 (eDAQ 401) Input configuration: Single–ended (via BNC connector) or differential (via DIN connector) Amplification ranges: ±20 mV to ±10 V full scale in 9 steps: ±...

  • Page 34: Sampling

    40 kHz on two channels. Available sampling rates: <1 Hz – 100 kHz with Chart 2 Hz – 100 kHz with Scope 100 Hz – 10 kHz with EChem Output Amplifier Output configuration: Single–ended or bipolar Maximum output current: 100 mA continuous e-corder...

  • Page 35: External Trigger

    Maximum input voltage: ±12 V Minimum trigger time: 5 µs Microprocessor and Data Communication Processor: PPC403 GCX (60 MHz internal) Memory: 4 MB DRAM Data communication: Expansion Ports C expansion port: Power and control bus for eDAQ Amps. Appendix C — Specifications...

  • Page 36: Physical Configuration

    115 V); no eDAQ Amps or pods attached Maximum power needs: <18 VA (with eDAQ Amps and Pods) Operating temperature range: 0 to 35 °C, 0 to 90% humidity (non- condensing) eDAQ reserves the right to alter these specifications at any time. e-corder...

  • Page 37: Glossary

    This refers to the connectors on transducer output is taken across the other. the front of the e-corder marked ‘Input’. These inputs are designed to accept up to ±10 V. bus. A data–carrying electrical pathway.
  • Page 38 The input connector on the DAC (digital–to–analog convertor). A device front of the e-corder marked ‘Trigger’. This lets that converts digital information into some one start recording from an external source. corresponding analog voltage or current.
  • Page 39 (HPF). See ‘filter’. energy form into another (usually an electrical signal). For example transducers can provide C. The I C connection is used by the e-corder an electrical signal related to the amount of to control eDAQ Amps. measured force, displacement, temperature, pressure, pH, etc.
  • Page 40 e-corder...

  • Page 41: Index

    Conductivity Pod 4 pH Pod 4 computer requirements RTD Pod 4 Macintosh 3 Thermocouple Pod 4 Windows 3 eDAQ web site 5 Conductivity Pod 4 envelope 34 connection to the computer 17 excitation 34 connector 34 external trigger 13 CPU 34...
  • Page 42 34 cables 18 connection 17 hubs 18 port 15 PCI 35 user modification 19 pH Amp 4 pH Pod 4 Picostat 4 Pod connector 10 Pods 4 Potentiostat 4 Power indicator 9 power requirements 15 problems and solutions 23 e-corder...

  • Page 43: License & Warranty

    You have the non-exclusive right to use the supplied eDAQ software (Chart, Scope etc). Your employees eDAQ Pty Ltd warrants the e-corder to be free of or students, for example, are entitled to use it, defects in material and workmanship for one year provided they adhere to this agreement.

  • Page 44: Technical Support

    Jurisdiction eDAQ Pty Ltd is bound by the laws of New South Wales in Australia, and any proceedings shall be heard by the Supreme Court of New South Wales in Australia.

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