Computer Controlled A/D and D/A Converters Unit

The Computer Controlled A/D and D/A Converters Unit, to help the students to learn how to perform the most common procedures and study the different circuits used to convert analog signals in a digital signals and vice versa.

ATENG 12355 — Computer Controlled A/D and D/A Converters Unit

(for main items)

• With this unit there are several options and possibilities:
• Main items: 1, 2, 3, 4, 5 and 6.
• Optional items: 7, 8 and 9.
• Let us describe first the main items (1 to 6):
• 1CADDA. Unit:
  Unit mounted in a metallic box.
  Power supply.
• In this unit, the elements are separated in two parts: left
  part for analog to digital conversions (A/D converter
  board) and right part for digital to analog conversions
  D/A converter board).
  The analog and digital signals to test the A/D and D/A
  converters can be generated by the circuits included in
  the front panel or by the unit software.
• The “ATENG 12355” unit includes the following elements:
• N-M60. Analog/Digital Converters Module.
• Circuit block:
  Signal generators.
  D/A converter.
  A/D converter.
  Adder.
  Sample and hold.
  Leds.
  Logic control.
  Integrator.
• Unit: ATENG 12355
  Counter.
  Flash converter.
• N-M61. Digital/Analog Converter Module.
• Circuit block:
  Signal generators.
  R-2R converter.
  Weighted resistors converter.
  D/A converter.
  Serial converter.
  Amplifier.
  Adder.
  Sample and hold.
  Frequency-voltage converter.
• The complete unit includes as well:
  Advanced Real-Time SCADA.
  Open Control + Multicontrol + Real-Time Control.
  Specialized Control Software based on LabVIEW.
  National Instruments Data Acquisition board (250 KS/s, kilo samples per second).
  Calibration exercises, which are included, teach the user how to calibrate a sensor and the
  importance of checking the accuracy of the sensors before taking measurements.
  Projector and/or electronic whiteboard compatibility allows the unit to be explained and
  demonstrated to an entire class at one time.
  Capable of doing applied research, real industrial simulation, training courses, etc.
  Remote operation and control by the user and remote control for technical support,
  are always included.
  Totally safe, utilizing 4 safety systems (Mechanical, Electrical, Electronic & Software).
  Designed and manufactured under several quality standards.
  Optional ICAI software to create, edit and carry out practical exercises, tests, exams,
  calculations, etc. Apart from monitoring user's knowledge and progress reached.
  This unit has been designed for future expansion and integration. A common expansion is
  the Scada-Net (ESN) System which enables multiple students to simultaneously
  operate many units in a network.
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Complete Technical Specifications (for main items)

• EDAS/VIS. Data Acquisition System and Virtual Instrumentation:
• 16 Analog inputs (1 block with 12 voltage channels and 1 block with 2 current channels
  (4 connections)).
  EDAS/VIS 0.25. Sampling velocity 250,000 samples per second.
  Two analog outputs.
  24 digital inputs/outputs, configurable as inputs or outputs, with 24 state LED indicators.
  These digital inputs/outputs are grouped in three ports of eight channels (P0, P1 and P3).
• Four digital signal switches 0 - 5 V.
• Two analog signal potentiometers 12 V.
  EDAS/VIS.
  Main ON/OFF switch. Data Acquisition
• Inside: internal power supply of 12 and 5 V. Potentiometer. System and Virtual Instrumentation
• 3 DAB. Data Acquisition Board:
  The Data Acquisition board is part of the SCADA system.
  PCI Express Data acquisition board (National Instruments) to be placed in a computer slot. Bus
  PCI Express.
• Analog input:
  Number of channels= 16 single-ended or 8 differential. Resolution=16 bits, 1 in 65536.
• Sampling rate up to: 250 KS/s (kilo samples per second).
• Input range (V)=±10 V. Data transfers=DMA, interrupts, programmed I/0. DMA channels=6.
• Analog output:
• Number of channels=2. Resolution=16 bits, 1 in 65536. Maximum output rate up to: 900 KS/s.
• Output range(V)=±10 V. Data transfers=DMA, interrupts, programmed I/0.
• Digital Input/Output: DAB
• Number of channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 100 MHz.
• Timing: Number of Counter/timers=4. Resolution: Counter/timers: 32 bits.
  The Data Acquisition board model may change at any moment, providing the same or better
  features than those required for the unit.
• 4 CADDA/CCSOF. Computer Control + Data Acquisition + Data Management Software:
  Compatible with actual Windows operating systems. Amicable graphical frame.
  Configurable software allowing the temporal/frequency representation of the different
  inputs and outputs. Visualization of a voltage of the circuits on the computer screen.
  It allows data store in a file, print screens and reports of the signals at any time.
  Measurement, analysis, visualization, representation and report of results.
• Set of virtual instruments:
• Oscilloscope:
• Channels: 12 simultaneous. Maximum input voltage: 10 V.
  All 12 input channels could be scaled to compare signal with different voltage levels.
• Maximum sampling velocity: 1000 samples per second.
  “Math Menu” with operations as add, rest, multiplication and division, between any of the 12
  oscilloscope channels.
• Function generator:
  Two independent signal generators, for sinusoidal, triangular, sawtooth and square.
• Channels: 2 (allowing working simultaneously). Maximum output voltage: 10 V.
• Maximum output rate: 1000 samples per second.
  It includes a graph where an output signal for each channel is shown.
• Spectrum analyzer:
• Channels: 12 (simultaneous). Maximum voltage: 10 V. Digital spectrum
• analyzer: based on the FFT.
• Maximum sampling velocity: 1000 samples per second.
• Multimeter:
• Voltmeter, channels: 12 (simultaneous). Maximum voltage: 10 V RMS.
• Ammeter, channels: 2 (simultaneous). Maximum ampere: 500 mA RMS per channel.
  Transient analyzer.
• Logic analyzer: CADDA/CCSOF
• Number of input channels: 8. TTL Voltage level.
• Clock source: 3 different sources.
  This instrument allows receiving as far as 8 digital signal simultaneously at 1 Mbps.
• Logic generator:
• Number of transmission channels: 8. TTL voltage level.
  This instrument allows generating up to 8 digital simultaneous signals of 1 Mbps.
  5 Cables and Accessories, for normal operation.
• 6Manuals:
• This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Control Software,
  Starting-up, Safety, Maintenance, Calibration & Practices Manuals.
• References 1 to 6 are the main items: ATENG 12355 + EDAS/VIS + DAB + CADDA/CCSOF + Cables and Accessories + Manuals are
  included in the minimum supply for enabling normal and full operation.
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