DASYLab—Function Modules

DASYLab is a GUI application that allows you to quickly develop custom DAQ applications without any programming. If you don't have the time or programming skills required to write a DAQ program, you need DASYLab! Using the intuitive worksheet, modules and wire functions, you're only a few mouse clicks away from a complete application.

Module categories

Inputs/Outputs

Display

Mathematics

Signal Processing

Files

Statistics

Trigger

Data Reduction

Network

Control

Special Modules

 

Inputs/Outputs

Analog In-/Output: up to 32 input modules and up to 512 channels up to 2 output modules and up to 32 channels Digital In-/Output: up to 32 input modules and up to 512 channels up to 2 output modules and up to 32 channels
Counter Input: up to 2 modules and up to 32 channels Frequency Output: up to 2 modules and up to 32 channels
RS 232 Input: extremely expandable with Master/ Slave modules (up to 256 channels with each serial interface) RS 232 Output: output of data or fixed strings for up to 16 channels
Icom Input: Universal serial module to be used with TCP/IP,GPIB and RS232. Master-/ Slave modules with max. 256 channels. Icom Output: Output of data or Strings via TCP/IP, GPIB or RS232.
IEEE 488 In-/Output: supports Measurement Computing GPIB, National Instruments, INES (Input only), or IOtech hardware DDE In-/Output: up to 16 modules and up to 256 channels
IVI Modules: Handles devices with an IVI compatible interface (Oscilloscope, Multimeter, Function Generator). MODBUS Modules: With these modules the MODBUS protocol enables DASYLab to read and write Analog and Digital registers for signed and unsigned integer registers, RS232 only.

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Signal Processing

Filter: Digital IIR filter with definable order and characteristics Correlation: Compute correlation coefficient, cross-correlation, autocorrelation, spectrum
Data Window: Various types of evaluation windows, e.g. rectangle, Gauss, Bartlet and other types FFT: Calculate and analyse the discrete spectrum of a signal
Polar/Cartesian: Convert data values between polar and cartesian coordinates Electrical Characteritics: Use the values of Current and Voltage to calculate electric characteristics such as Ueff, cosp etc..
Harmonic Distortion: Calculates the amplitude and phase of the fundamental frequency and up to 48 harmonic waves. Period Check: Calculates the period of a signal by checking its zero crossings.Period Check: Calculates the period of a signal by checking its zero crossings.

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Trigger

Start/Stop Trigger: Selectable start and stop conditions Pre/Post Trigger: Amplitude- and slope-based triggers with hysteresis can be specified
Combi Trigger: Separate signal segments according to logical conditions SampleTrigger: Separate intervals of a signal based on a predetermined number of samples.
Trigger on Demand: Separate samples depending on the dynamic behavior of the signals. Relay: Control up to 15 channels with one input signal

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Control

Generator: Signal generation with frequency and amplitude modulation Switch: On/off or momentary switch for program and data control
Coded Switch: Select from preset values by positioning a rotating switch or clicking on buttons. Slider: Definable signal range; signal level to be modified during measurement
PID Control: Proportional, integral and derivative components can be specified freely; new auto-tuning function Two Point Control: Up to 8 control circuits. Selectable set values are compared with actual values
Time Delay: Data output after a specified period of time Latch: Constantly outputs the input value received last
TTL Pulse Generator: generates TTL signals with specified duration and switch conditions Read Variable: Read Global Variable to generate a data channel to be used in the worksheet
Save Variable: Save data channel to a Global Variable to be used in module parameters and computations Router: Route data channel based on control input (amplitude or edge) or based on time (blocks, time, or action controlled)
Block Time: Extracts the time information of a block and puts time and date into global variables Stop: stops or interrupts measurement according to specified conditions

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Display

Diagram: Versatile and highly interactive graphical display for manually scaling and comparing multiple axis Y/t charts, X/Y charts, or Data Chart Recorders for analysis. Status Lamp: TTL or Digital Signal status displayed as text and/or images.
Y/t Chart: High-speed scope display for fast data with a wide range of display options X/Y Chart: Display data blocks of two dependent signals as an X/Y plot, including a Polar plot view.
Polar Plot Chart: Display data blocks of two dependent signals (X/Y or polar data) in polar coordinates with a third data as flags. Analog Meter: Provides several shapes of instruments and offers peak hold and trend indicator options
Digital Meter: Display the value, with trend display and lower/upper marks. Formats include decimal, hex, octal, binary, ASCII & Clock Bar Graph: Bar (horizontal/vertical), thermometer, LED or triangle style; trend and range display options
Chart Recorder: Chart display for slow data, wide display area and a wide range of display options. List: Show data values displayed in list form; several formatting options

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Files

Read Data: Read data from floppy/hard disk files; supports DASYLab, IEEE-32-bit, ASCII format Write Data: Write data to floppy/hard disk files; supports DASYLab, IEEE-32-bit, ASCII, Diadem and other formats
ODBC Input/Output: Exchange data between DASYLab and ODBC data bases.

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Data Reduction

Average: Reduce data using running or summation averages Block Average/Peak Hold: Reduce data across data blocks using running or summation average, or using Peak Hold (Minima or Maxima)
Separate: Reduce data by skipping defined number of samples (or blocks) only; outputs one, then repeats Merge/Expand: Merge data from several channels or distribute signals from one channel to others
Cut Out Block: Output specified samples of a block Time Slice: Output data from different channels according to specified switch conditions
Shift Register: Stores data, one point at a time, into a temporary register, and outputs the block repeatedly Circular Buffer: Save an interval of the data stream and send it to the modules output via event driven action

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Special Modules

Black Box: Sub-worksheet unit containing worksheet sections; use for common functions or to manage complexity Import/Export (Black Box): Data interface between worksheet levels (main worksheet and Black Boxes)
Action: Trigger various actions on the occurence of specified events Message: Display or print an operator message; play a wave/AVI file; send DDE message; log messages to dedicated printer
Time base: Extract and output the time or frequency information of a signal Signal Adaptation: Synchronize signal flows of differing characteristics
Send e-Mail: Use Windows E-Mail to send messages to any address including attachments and custom messages/alarms

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Mathematics

Formula Interpreter: Link data from several channels according to mathematical functions entered as formulas Arithmetic: Basic arithmetic operations; various operands and exponential functions
Trigonometry: Sine, tangent, arc- and hyperbolic functions Differentiation/Integration: Integration of signal values or slopes in the signal flow
Scaling: Linear scaling, interpolation tables, RTD linearization, thermocouple linearization, offset adjust, linear conversion factors for a large number of measurement systems Slope Limitation: Limit the difference between values
Reference Curve: Calculates a reference Curve using one or more test runs Logical Operations: Evaluate TTL data from input channels; operators AND, OR, XOR, NAND, NOT
Bit Operations: Perform logical operations (bit by bit) with the received data words, combine, extract, mask and shift operations Flip-Flop: Use bistable trigger elements for intermediate data storage (FlipFlop and MonoFlop)
Gray-Code: Decodes signals generated by position encoders Channel Comparator: Compares channels and a constant or to corresponding channels.

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Statistics

Statistical Values: Compute max/min, average, effective values, variance and standard deviation Position in Signal: Extract the value position as defined by sample number, date/time or frequency
Histogram: Classify data according to specific intervals and numbers of classes Regression: Calculate constant, linear or polynomial regression curves up to an order of 20
Counter: Count blocks, edges, samples, maxima/minima, zero/level crossings and duration Minimum/Maximum: Determine extreme values in the signal flow
Check Reference Curve: Compare the signal with a previously saved reference curve and signal deviations. Pulse Width Analysis: Calculates the frequency, length of pulses, pauses and pulse/pause ratio in a TTL pulsed signal.
Channel Sort: Rearranges the input channels based on their values

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Network

Net Input/Output: Receive or send data to one or more DASYLab Net via a TCP/IPnetwork. Message Input/Output: Receives or Sends messages from or to other DASYLab Net via a TCP/IP network.
DataSocket Import/Export: Exchange data with OPC server via network.

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Analysis Add-On (optional)

Sequence Generator: Generate curves and ramps of different types which can be combined in many ways. Transfer Function: The Transfer and Coherence functions are calculated for up to 8 pairs of values.
Block Weighting: Weight each sample in block by a predefined function. Convolution: Up to 16 Input signals are processed (superimposed) with digital filters.
Write UFF Format: Write data in the Universal File Format 58 for use in system analysis. FFT Filter: Frequency intervals of up to 16 signals are filtered with defined conditions.
Universal Filter: Create user defined FIR or IRR Filters with a helpful filter wizard for FIR Filters. FFT Maximum: Calculates the maximum of energy of a FFT spectrum by analysing intervals of the frequency band.
n-th Order Harmonic: Calculates the maximum of the Harmonic up to an order of 20 of FFT data Rainflow: Several counting algorithms classify samples for Time-Stress Analysis
Two-channel Classification: Classifies the values of two diferrent temporal functions to be used for Time-Stress Analysis. Octave Analysis: This module is used for One-Third or Octave Analysis of a signal using digital filters optimized to 40KHz

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