Why is the Moku:Pro peak-to-peak voltage limited to 2 Vpp in MiM when the max output is 10 Vpp?
Written by Sam Speece
Updated at July 4th, 2024
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Moku:Go
Moku:Go Arbitrary Waveform Generator Moku:Go Data Logger Moku:Go Frequency Response Analyzer Moku:Go Logic Analyzer & Pattern Generator Moku:Go Oscilloscope & Voltmeter Moku:Go PID Controller Moku:Go Spectrum Analyzer Moku:Go Waveform Generator Moku:Go Power Supplies Moku:Go Digital Filter Box Moku:Go FIR Filter Builder Moku:Go Lock-in Amplifier Moku:Go General Moku:Go Logic Analyzer/Pattern Generator Moku:Go Time & Frequency Analyzer Moku:Go Laser Lock Box Moku:Go Phasemeter
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Moku:Lab
Moku:Lab General Moku:Lab Arbitrary Waveform Generator Moku:Lab Data Logger Moku:Lab Digital Filter Box Moku:Lab FIR Filter Builder Moku:Lab Frequency Response Analyzer Moku:Lab Laser Lock Box Moku:Lab Lock-in Amplifier Moku:Lab Oscilloscope Moku:Lab Phasemeter Moku:Lab PID Controller Moku:Lab Spectrum Analyzer Moku:Lab Waveform Generator Moku:Lab Time & Frequency Analyzer Moku:Lab Logic Analyzer/Pattern Generator
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Moku:Pro
Moku:Pro Arbitrary Waveform Generator Moku:Pro Data Logger Moku:Pro Frequency Response Analyzer Moku:Pro Oscilloscope Moku:Pro PID Controller Moku:Pro Spectrum Analyzer Moku:Pro Waveform Generator Moku:Pro Lock-in Amplifier Moku:Pro Digital Filter Box Moku:Pro FIR Filter Builder Moku:Pro Phasemeter Moku:Pro Multi-instrument Mode Moku:Pro General Moku:Pro Logic Analyzer/Pattern Generator Moku:Pro Time & Frequency Analyzer
- Python API
- MATLAB API
- Arbitrary Waveform Generator
- Data Logger
- Digital Filter Box
- FIR Filter Builder
- Frequency Response Analyzer
- Laser Lock Box
- Lock-in Amplifier
- Oscilloscope
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- PID Controller
- Spectrum Analyzer
- Time & Frequency Analyzer
- Waveform Generator
- Logic Analyzer & Pattern Generator
- Multi Instrument Mode
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- Moku general
- LabVIEW
In Short
The Moku:Pro has two output gain ranges, one covering 2Vpp and one up to 10Vpp. When using one instrument, this range is automatically changed as you change the signal amplitude. In Multi-instrument Mode, the gain needs to be manually set to access the higher range. This is done by selecting the 14dB gain for a DAC output on the Multi-instrument Mode configuration screen.
Details
The Moku:Pro has a maximum output amplitude of 10 Vpp, this is true whether you are using Multi-instrument Mode (MiM) or not. However, in MiM the signal coming out of the Waveform Generator or Arbitrary Waveform Generator does not know whether it is being routed to another instrument slot or to the Moku:Pro output.
The maximum amplitude between instrument slots is 2 Vpp, so in the WG/AWG amplitude settings it is limited to 2 Vpp. However, when the signal is routed to the Moku:Pro output, the selected gain is applied before the signal is generated by the DAC.
This means that if you set a sinewave to 2 Vpp in the WG/AWG and route it to a Moku:Pro output with +14 dB gain selected, then the signal generated by the DAC will be a 10 Vpp sine wave. If a 0 dB gain is applied then a 2 Vpp sine wave will be generated.
