Calculation features: Signal generation

Signal generation feature

Eschart can generate any signal waveform by setting various parameters.

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Signal generation window

Click Generator from the menu of to open signal generation.

Name	Function
Series name	Specifies any series name.
Sampling rate	Enter the sampling frequency.
Duration	Enter the start time and the end time.
Waveform type	Select from constant line, step wave, ramp wave, sine wave, square wave, and random wave.

Settings for each waveform type

Constant line

Name	Function
Constant	Specifies the constant value of the vertical axis.

Step wave

Name	Function
Step time	Specifies the time at which the step change occurs.
Initial value	Specifies the value before the step change.
Final value	Specifies the value after the step change.

Ramp wave

Name	Function
Slope	Specifies the slope. Specifies how much it increases per second.
Transition start time	Specifies the time at which it transitions to the slope line.
Initial value	Specifies the initial value.

Sine wave

Name	Function
Amplitude	Specifies the amplitude.
Frequency	Specifies the frequency.
Phase	Specifies the phase shift. Specify it in the range from -360° to 360°.
Offset	Lets you specify an offset value.

Square wave

Name	Function
Amplitude	Specifies the amplitude.
Frequency	Specifies the frequency.
Duty	Specifies the duty ratio.
Phase	Specifies the phase shift. Specify it in the range from -360° to 360°.
Offset	Lets you specify an offset value.

Random wave

Name	Function
Minimum	Specifies the minimum value of the random values.
Maximum	Specifies the maximum value of the random values.
Seed	Lets you specify the seed value that is the basis of the random number generation. Even if the minimum and maximum values are the same, a different waveform is generated each time when no seed value is specified, but when a seed value is specified, exactly the same random waveform is generated.

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Setting procedure

1. Set any series name in Series Name.

2. Enter the sampling frequency in Sampling Rate.

3. Enter the start time and the end time in Duration.

4. Select the waveform type from the Waveform list.

5. Set the parameters for each waveform type.

   Settings and generation example of Constant

   Constant: 2

   

   Settings and generation example of Step

   Step Time: 0.5
   Initial Value: 1
   Final Value: 2

   

   Settings and generation example of Ramp

   Slope: 2
   Start Time: 0.5
   Initial Time: 1

   

   Settings and generation example of Sine

   Amplitude: 2
   Frequency: 4
   Phase: 0, 90
   Offset: 1

   

   Settings and generation example of Square

   Amplitude: 2
   Frequency: 4
   Phase: 0
   Duty: 50, 30
   Offset: 1, 0

   

   Settings and generation example of Random

   Minimum: -1
   Maximum: 1
   Seed: 3, not specified

   

6. When you click the OK button, a waveform with the conditions you set is generated.