Liquid Instruments Moku:Pro User Manual

Waveform generator
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Waveform Generator
Moku:Pro User Manual
The Moku:Pro Waveform Generator is designed to generate common signals with high accuracy
and configurability across four independent output channels. The outputs are precisely adjustable
for frequency, phase, and amplitude. Further, the outputs may be modulated with a variety of
internally generated or external signals and triggered from flexible, programmable triggers.
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 2023 Liquid Instruments. All rights reserved.

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Summary of Contents for Liquid Instruments Moku:Pro

  • Page 1 Waveform Generator Moku:Pro User Manual The Moku:Pro Waveform Generator is designed to generate common signals with high accuracy and configurability across four independent output channels. The outputs are precisely adjustable for frequency, phase, and amplitude. Further, the outputs may be modulated with a variety of internally generated or external signals and triggered from flexible, programmable triggers.
  • Page 2: Table Of Contents

    Pulse width Edge time DC level Modulation types and trigger modes Modulation sources Trigger sources Amplitude modulation Frequency modulation Phase modulation Pulse-width modulation Burst mode Sweep mode | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 3 Ensure Moku:Pro is fully updated. For the latest information, visit: liquidinstruments.com | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 4: User Interface

    User interface Moku:Pro is equipped with four output channels. You can tap the icons to navigate between channels. Description Description Main menu Configure output load (50 Ω or 1 MΩ) Configure offset Settings (Ch 2) Configure modulation depth Settings (Ch 3)
  • Page 5: Main Menu

    Main menu The main menu can be accessed by pressing the icon, allowing you to: | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 6: Preferences

    Moku:Pro automatically saves instrument settings when exiting the app, and restores them again at launch. When disabled, all settings will be reset to defaults on launch. Moku:Pro can remember the last used instrument and automatically reconnect to it at launch. When disabled, you will need to manually connect every time.
  • Page 7: Settings

    This gives you the option to instantly apply settings from other channels to this channel. You can sync the output phase across all channels by tapping sync phase. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 8: Output Configuration

    Impedance Moku:Pro analog outputs have an impedance of 50 Ω. As such, voltages supplied to a 50 Ω load will be reduced by a factor of two due to the voltage divider formed by the closed circuit. Changing the load impedance on the user interface does not affect the actual output voltage.
  • Page 9 Tap or click pill 1 - 4 to select and change values. The selected parameter is shown in, and can be edited from, the bar below. Select alternative representations (shown in parentheses) by clicking button. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 10: Square Wave

    Tap or click pill 1 - 5 to select and change values. The selected parameter is shown in, and can be edited from, the bar below. Alternative representations (shown in parentheses) can be selected by clicking the button. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 11: Ramp Wave

    Tap or click pill 1 - 5 to select and change values. The selected parameter is shown in, and can be edited from, the bar below. Alternative representations (shown in parentheses) can be selected by clicking the button. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 12: Pulse Wave

    Click pill 1, 2 to select and change values. The selected parameter is shown in, and can be edited from, the bar below. Alternative representations (shown in parentheses) can be selected by clicking the button. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 13: Dc Wave

    DC wave Description DC level Tap or click pill 1 to select or change the DC value. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 14: Modulation Types

    Modulation types The Moku:Pro Waveform Generator supports several modulation and triggering modes. The modulation types available vary between waveforms: pulse-width modulation (PWM) only applies to the Pulse waveform type, while Noise only supports Amplitude Modulation (AM) and reduced triggering functionality. All other waveform types support amplitude, frequency, or phase modulation as well as all available trigger options.
  • Page 15: Frequency Modulation

    Modulation source The modulation source can be an internally-generated sinewave, Moku:Pro analog input, or another Waveform Generator channel. When using an analog input, the user can further select the input range, impedance, and coupling. | Moku:Pro Waveform Generator User Manual...
  • Page 16: Phase Modulation

    Modulation source The modulation source can be an internally-generated sinewave, Moku:Pro analog input, or another Waveform Generator channel. When using an analog input, the user can further select the input range, impedance, and coupling. | Moku:Pro Waveform Generator User Manual...
  • Page 17: Pulse-Width Modulation

    Modulation source The modulation source can be an internally-generated sinewave, Moku:Pro analog input, or the other Waveform Generator channel. When using an analog input, the user can further select the input range, impedance, and coupling.
  • Page 18: Triggered Modulation Modes

    Start: Begin generation of the waveform on trigger, continue indefinitely. N Cycle: Upon receipt of trigger signal, generate N cycles of the waveform then re-arm. Not supported for noise waveform. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 19 Input: Trigger from associated input channel, at given voltage. Output: Trigger from another output channel, at given voltage. Sweep time Time between sweep start and end (period). | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 20: Instrument Reference

    Sine wave The Sine wave is the simplest dynamic signal in the Moku:Pro. It features extremely low harmonic distortion; it’s very close to a pure single frequency. The Sine wave can be modulated by all available modulation types except PWM. Moreover, it forms the basis of the “Internal”...
  • Page 21: Frequency

    Phase Applicable to: Sine, Square, Ramp, Pulse Defines the phase of the waveform with respect to the internal reference clock of the Moku:Pro device. By tapping the “Sync Phase” button in the Settings Drawer, this phase also becomes relative to the other output channels.
  • Page 22: Modulation Types And Trigger Modes

    The trigger event is generated automatically at a given rate (specified period). External A rising edge on the back-panel External Trigger Input is used as the trigger source. For trigger level and precision characteristics, refer to the Moku:Pro Technical Specifications available at liquidinstruments.com. Input The specified analog input is monitored for a rising edge past the specified voltage.
  • Page 23: Frequency Modulation

    Sweep mode has three configurable parameters: Start frequency: Initial frequency of the output waveform, immediately on detection of a trigger. The Start frequency is the frequency of the unmodulated wave. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 24 Duration: The time taken to sweep from start to end frequency. Upon completion of the sweep, the sweep circuit will re-arm and be ready to receive a new trigger input. | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.
  • Page 25 Ensure Moku:Pro is fully updated. For the latest information, visit: liquidinstruments.com | Moku:Pro Waveform Generator User Manual © 2023 Liquid Instruments. All rights reserved.

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