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Computer Controlled Teaching Unit for the Study of Digital Signal Processing


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It allows to study the principles and more important concepts about digital signal processing, including study and practical exercises of continuous waveforms generation and signals digitalization among others.

TDS. Unit:

Metallic box.

Diagram in the front panel with similar distribution to the elements in the real unit.

Front Panel:

2 Function generators modules, that can generate 3 different signals: sinusoidal, square and


Each function generator includes:

  • Wave forms selector (sinusoidal, square and triangular).
  • Frequency selector.
  • Amplitude selector.
  • Duty cycle selector.
  • Signal output (BNC connector).
  • Noise generator module, that can generate two noises type. Including:
  • 2 noise outputs: one for white noise and other for pink noise.
  • Attenuator selector per each noise type.

Microphone pre-amplifier module, including:

  • Input (microphone)(jack connector 1/4’’).
  • Outputs (2 connectors, one jack connector 1/8’’ and the other BNC connector).
  • Power amplifier module, including:
  • Inputs (2 connectors, one jack connector 1/8’’ and the other RCA connector).
  • Output (BNC connector).
  • Volume selector.
  • Speaker module.

PC input/output module, including:

  • 2 inputs (BNC connectors).
  • 2 outputs (BNC connectors).
  • Power On/Off switch.

Lateral panel:

SCSI connector for connecting with the data acquisition board (DAB) to be placed in the computer PC.

Back panel:

Power supply connector. Safety fuse.


  • Power supply.
  • 2 Signal generation boards (PBC).
  • White and pink noise generation board (PBC).
  • Power amplifier board (PBC).
  • Pre-amplifier board (PBC).
  • Control interface.

Possibility of working simultaneously with two external signals, thanks to its inputs, facilitating operations that required more than one signal. Moreover it is possible to generate signals directly by the software and send them to the unit outputs and then visualizing by an external oscilloscope or listening by the speaker

DAB. Data Acquisition Board:

PCI Data acquisition board (National Instruments) to be placed in a computer slot. Bus PCI.

Analog input: Cchannels= 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)= 10V.

Data transfers=DMA, interrupts, programmed I/0. Number of DMA channels=6.

Analog output:Channels=2. Resolution=16 bits, 1 in 65536. Maximum output rate up to: 833 KS/s.

Output range(V)= 10V. Data transfers=DMA, interrupts, programmed I/0.

Digital Input/Output: Channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 1 MHz.

Timing: Counter/timers=2. Resolution: Counter/timers: 32 bits.

TDS/CCSOF. Computer Control+Data Acquisition+Data Management Software:

Compatible with actual Windows operating systems. Graphic and intuitive simulation of the process in

screen. Compatible with the industry standards.

Registration and visualization of signals in an automatic and simultaneously way. 2 signals can be

visualized simultaneously.

Flexible open and multicontrol software, developed with actual windows graphic systems, acting

simultaneously on all process parameters.

Management, processing and comparison of data.

Sampling velocity up to 250,000 data per second.

Comparative analysis of the obtained data, after to the process and modification of the conditions during

the process.

Cables and Accessories, for normal operation.


This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and Control

Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals