Frequency Response Analyzer
Liquid Instruments offers the Moku:Delta and Moku:Pro Frequency Response Analyzers, versatile instruments for measuring system frequency response across a wide range of frequencies.
Moku:Delta Frequency Response Analyzer
The Moku:Delta Frequency Response Analyzer enables frequency response measurements from DC to 2 GHz, leveraging eight input and output channels at 5 GSa/s to support simultaneous multi-point probing or parallel system testing. It combines 14-bit and 20-bit ADCs with frequency-dependent blending to deliver high dynamic range across the spectrum, while Dynamic Amplitude drive automatically adjusts excitation levels to optimize sensitivity. Up to 8192 sweep points can be measured with settling and averaging times between 1 μs and 10 s to balance measurement speed and resolution. The system also supports harmonic demodulation up to the 15th harmonic and includes a dedicated math channel for real-time computation.
Key Features:
- Linear or logarithmic swept sine output
- Demodulate up to the 15th harmonic
- Measure entire system response with "In-put" or "In Out" modes, or components of the system with "In In 1"
- Math channel to add, subtract, multiply, divide, or apply an arbitrary calculation to response functions as they are acquired
- Saturation detection and avoidance with Dynamic Amplitude drive
- Configurable measurement averaging and settling times
- Measure key metrics with cursors and markers
- Remove constant phase shift with delay compensation
- Option to unwrap phase
Specifications:
- Frequency range: 10 mHz to 2 GHz
- Input impedance: 50 Ω or 1 MΩ
- Averaging time: 1 μs to 10 s
- Settling time: 1 μs to 10 s
- Sweep points: 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192
- Output voltage range: Up to 10 Vpp
- Harmonics detection: Up to 15th
- Input range: 100 mVpp, 1 Vpp, 10 Vpp, or 40 Vpp
- Measurement units: dB, dBm, dBVpp, dBVrms
- Noise floor: < 10 nV/√Hz
Applications:
- RF filter and amplifier characterization
- Capacitance/inductance measurement
- EMI filter characterization
- Impedance spectroscopy
- Power supply analysis
- Stability analysis
- Sensor interface and conditioning circuit testing
- Control system validation
- Wide band device verification
Moku:Pro Frequency Response Analyzer
The Moku:Pro Frequency Response Analyzer enables measurement of system frequency response in both magnitude and phase using a swept sine output from 10 mHz to 500 MHz, with a noise floor of < -125 dBm across the entire frequency range. Moku:Pro is equipped with four inputs and four outputs, enabling differential or ratiometric measurements. Select up to 8192 points per sweep and configure settling and averaging times to balance total sweep duration and signal-to-noise ratio.
Key Features:
- Linear or logarithmic swept sine output
- Math channel to add, subtract, multiply, divide, or apply an arbitrary calculation to response functions as they are acquired
- Saturation detection and avoidance with Dynamic Amplitude drive
- Measure key metrics with cursors and markers
- Configurable measurement averaging and settling times
- Probe four systems simultaneously, or one system at multiple points
- Demodulate up to the 15th harmonic
Specifications:
- Frequency range: 10 mHz to 500 MHz
- Input impedance: 50 Ω or 1 MΩ
- Averaging time: 1 μs to 10 s
- Settling time: 1 μs to 10 s
- Sweep points: 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192
- Output voltage range: Up to 20 Vpp
- Harmonics detection: Up to 15th
- Input range: 400 mVpp, 4 Vpp, or 40 Vpp
- Measurement units: dB, dBm, dBVpp, dBVrms
- Noise floor: < 100 kHz: < -125 dBm; 100 kHz to 300 MHz: < -135 dBm; 300 MHz to 500 MHz: < -125 dBm
Applications:
- Capacitance/inductance measurement
- EMI filter characterization
- Impedance measurement
- Power supply analysis
- Stability analysis
Moku:Lab Frequency Response Analyzer
The Moku:Lab Frequency Response Analyzer measures system frequency response in both magnitude and phase using a swept sine output from 10 mHz to 200 MHz. It allows selection from 32 to 8192 points per sweep and configuration of settling and averaging times to balance total sweep duration and signal-to-noise ratio. Dynamic output control maximizes SNR and avoids saturation across the frequency range.
Key Features:
- Linear or logarithmic swept sine output
- Math channel for calculations on response functions
- Saturation detection and avoidance with Dynamic Amplitude drive
- Cursor and marker measurements
- Configurable averaging and settling times
- Simultaneous probing of two systems, or one system at two points
- Demodulation up to the 15th harmonic
Specifications:
- Frequency range: 10 mHz to 200 MHz
- Input impedance: 50 Ω or 1 MΩ
- Averaging time: 1 μs to 10 s
- Sweep: Linear/Logarithmic
- Output voltage range: 2 Vpp into 50 Ω
- Harmonic detection: Up to 15th
- Input voltage range: 1 Vpp or 10 Vpp
- Noise floor: 10 mHz to 100 kHz: -100 dBm; 100 kHz to 1 MHz: -125 dBm; 1 MHz to 50 MHz: -130 dBm; 50 MHz to 200 MHz: -120 dBm
Applications:
- Capacitance/inductance measurement
- EMI filter characterization
- Impedance measurement
- Power supply analysis
- Stability analysis
Moku:Go 20 MHz Frequency Response Analyzer
The Moku:Go Frequency Response Analyzer enables frequency response measurement in both magnitude and phase using a swept sine output from 10 mHz to 20 MHz. It allows selection from 32 to 8192 points per sweep and configuration of settling and averaging times to balance total sweep duration and signal-to-noise ratio.
Key Features:
- Linear or logarithmic swept sine output
- Math channel for calculations on response functions
- Cursor and marker measurements
- Configurable averaging and settling times
- Saturation detection and avoidance with Dynamic Amplitude drive
- Probes two systems simultaneously, or one system at two points
- Demodulates up to the 15th harmonic
Specifications:
- Frequency range: 10 mHz to 20 MHz
- Input impedance: 1 MΩ
- Averaging time: 1 μs to 10 s
- Sweep: Linear/Logarithmic
- Output voltage range: 10 Vpp
- Harmonics detection: Up to 15th
- Input voltage range: 10 Vpp or 50 Vpp
- Measurement units: dB, dBm, dBVpp, dBVrms
- Noise floor: up to -80 dB
Applications:
- Impedance measurement
- Capacitance/inductance measurement
- Stability analysis
- Power supply analysis
- EMI filter characterization
