Zurich Instruments - Model HF2LI -50 MHz Lock-in Amplifier
The Zurich Instruments HF2LI is a digital lock-in amplifier covering the frequency range between DC and 50 MHz. It is the instrument of choice for the characterization of MEMS devices such as gyroscopes and for measurements in the area of microfluidics. The HF2LI is equipped with the Zurich Instruments control software LabOne, which provides a web-based user interface featuring a spectrum analyzer, a sweeper and a basic oscilloscope, among others. A number of upgrade options can extend the functionality of the HF2LI to adapt to different applications. Furthermore, combining the HF2LI with the HF2TA Current Amplifier enables direct current readout.
- DC - 50 MHz, 210 MSa/s
- 2 independent lock-in units, 2 signal generators
- 1 fundamental and 2 harmonics per lock-in unit
- 4 auxiliary outputs, 2 auxiliary inputs
- USB 2.0, 480 Mbit/s
- LabOne® toolset including Scope, Sweeper, and Spectrum Analyzer
- Sensing and actuation: MEMS gyroscopes, accelerometers
- Microfluidics
- Non-linear imaging: CARS, SRS, Terahertz, etc.
- Laser spectroscopy
- Atomic force microscopy (AFM), scanning probe microscopy (SPM)
- Nondestructive testing
- Medical technology
With multi-device synchronization (MDS) it is possible to operate multiple HF2LIs as a single multi-channel device:
- Operate all instruments from a single LabOne user interface and LabOne API.
- Lock in phase all instrument clocks and oscillators (stable phase relationship).
- Synchronize time stamps and sampling rates for automatic alignment of measurement data.
Lock-in operating modes
Internal reference mode: Single and dual lock-in
External reference mode: Single and dual lock-in
Auto reference mode: Single and dual lock-in
Dual-harmonic mode: 1 fundamental + 2 harmonics (simultaneous)
Multi-harmonic mode: 1 fundamental + 5 harmonics (simultaneous), with HF2LI-MF
Arbitrary frequency mode: 6 frequencies, with HF2LI-MF
HF analog input
Frequency range: DC - 50 MHz
Input impedance: 50 Ω or 1 MΩ || 20 pF
Input noise voltage: 5 nV/√Hz (above 10 kHz)
Dynamic reserve: 120 dB
Input range: ±3.3 V
Input AC range: ±1.5 V (with DC coupling)
Input full range sensitivity: 1 nV to 1.5 V
A/D conversion: 14 bits, 210 MSa/s
HF analog output
Frequency range: DC - 50 MHz
Output ranges: ±10 mV, ±100 mV, ±1 V, ±10 V
Signal adder: ±10 V, DC to 50 MHz bandwidth
D/A conversion: 16 bits, 210 MSa/s
Demodulator and reference
Number of demodulators: 6 dual-phase
Output sample rate: On USB: up to 460 kSa/s
On auxiliary outputs: 1 MSa/s
Filter time constant: 1 µs - 500 s
Filter bandwidth: 83 µHz - 200 kHz
Filter slope: 6, 12, 18, 24, 30, 36, 42, 48 dB/Oct
X, Y, R, Theta: 64-bit full range
Reference frequency resolution: 0.7 µHz
Reference phase angle resolution: 1.0 µ°
Scope
Input channels: Signal inputs, signal outputs
Scope modes: Time domain, frequency domain (FFT)
Number of display channels: 1
Trigger channels: Signal inputs, signal outputs, oscillator phases, DIOs
Trigger modes: Edge
Sampling rates: 6.4 kSa/s to 210 Msa/s
Vertical resolution: 14 bits
Maximum number of samples per shot: 2048
Bandwidth limit mode, vertical resolution increase: Sample decimation, averaging
Cursor math: Location, area, wave, peak, tracking, histogram
Spectrum Analyzer
Center frequency range: 0 - 50 MHz
Spectrum modes: FFT(X+iY), FFT(R), FFT(Θ), FFT(f) and FFT((dΘ/dt)/2π)
Statistical options: Amplitude, spectral density, power
Averaging modes: None, exponential moving average
Maximum number of samples per spectrum: 8.4 MSa
Maximum span: 460 kHz
Window functions: Rectangular, Hann, Hamming, Blackman Harris
Cursor math: Location, area, wave, peak, tracking, histogram
Sweeper
Scan parameters: Oscillator frequency, demodulator phase shift, auxiliary offset, signal output amplitudes, etc.
Parameter sweep ranges: Full range, linear, logarithmic
Parameter sweep resolution: Arbitrary, defined by start/stop value, number of sweep points
Display parameters: Demodulator output (X, Y, R, Θ, f), auxiliary input
Display options: Single plot, dual plot (e.g., Bode plot), multi-trace
Statistical options: Amplitude, spectral density, power
Preset measurement modes: Parameter sweep, noise amplitude measurement, frequency response analyzer, 3-omega-sweep
Auxiliary signals
High-speed outputs: 4 channels, ±10 V, amplitude, phase, frequency, X/Y, or user-defined
D/A converter: 16 bits, 1 MSa/s
D/A analog bandwidth: 200 kHz
High-speed inputs: 2 channels, ±10 V
A/D converter: 16 bits, 400 kSa/s
A/D analog bandwidth: 100 kHz
Other interfaces
Host connection: USB 2.0, 480 Mbit/s
Pre-amplifier control bus: ZCtrl proprietary bus to control external pre-amplifiers
Synchronization bus: ZSync proprietary bus to locally interconnect ZI instruments
Digital I/O: 32 bits, general purpose
General
Dimensions: 45 x 35 x 10 cm (19" rack)
Weight: 6.2 kg
Power supply: 110-120 V, 220-240 V, 50/60 Hz
Operating temperature: +5 °C to +40 °C
Operating environment: IEC61010, indoor location, installation category II, pollution degree 2
Operating altitude: Up to 2000 m
Internal oscillator output: Sine, ±1 V, 10 MHz
Internal oscillator initial accuracy: ±1.5 ppm
Internal oscillator temperature coefficient: 0.05 ppm/C