SE2041 Digital Lock-in Amplifier provides an excellent performance within its bandwidth from 1 mHz to 60 MHz. With the advantage of the latest digital signal processing technology and high-speed 250MSPS 14-bit ADC, SE2041 can easily detect the phase and the magnitude of weak signals overwhelmed by various large noises. The performance of SE2041 is as good as other lock-in amplifiers all over the world, even better than them in some certain parameters, such as measurement accuracy, SNR, dynamic reserve, which meets the needs of scientific research and industrial application well.
SE2041 DSP Lock-In Amplifier
Key Features
1 mHz to 60 MHz frequency range
1 nV to 1 V full-scale sensitivity
Time constants from 30 ns to 4 ks
> 120 dB dynamic reserve
Input noise as low as 6 nV/√Hz@100 kHz
Up to 4 demodulators
A high-performance signal generator
Automatic adjustment
Multiple-harmonic measurement
Dual-phase structure guarantees higher accuracy
5.6 inch color TFT-LCD screen, single or dual display
Support remote control, embedded a free LabVIEW program
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Application of Lock-in Amplifier in Biomedicine
The development of biomedicine has put forward higher frequency bands and sensitivity for the measurement of electrical impedance spectroscopy of cellular and subcellular components. Currently, using a digital lock-in amplifier to construct a microfluidic device for electrical impedance spectroscopy measurement is the most effective method.
The impedance cytometry technique is a suitable method to observe the size and velocity of cells in microfluidic channels. It is based on monitoring changes in the dielectric properties of cells as they pass through two electrode pairs in a microfluidic channel. It has a fast response time, no tagging and integrates classification operations.
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Trusted by Universities and Research Institutes Around the World!
Typical Customers:
• The Hong Kong Polytechnic University
• Universität Regensburg
• Rice University
• Weizmann Institute of Science
• University of Wisconsin-Madison
• Massachusetts Institute of Technology
• University of Texas at Austin
• Northeastern University
You can trust us !
| 1. Signal Channel | |
| Voltage Input Mode | Single-ended or Differential |
| Full-scale Sensitivity | 1 nV to 1 V in a 1-2-5 sequence |
| Impedance | Voltage: 50 Ω // 5 pF or 10 MΩ // 5 pF, AC or DC coupled |
| C.M.R.R | >70 dB to 100 Hz, >50 dB to 100kHz |
| Dynamic Reserve | > 120 dB |
| Gain Accuracy | 0.5% typ (<1 MHz), 3% max |
| Noise | • 6 nV/√Hz at 99.99 kHz • 14 nV/√Hz at 997 Hz |
| Gounding | BNC shield can be grounded or floated via 1 kΩ to ground |
| 2. Reference Channel | |
| Input | • Frequency range: 1 mHz to 60 MHz • Reference input: TTL or Sine • Input impedance: 1 MΩ//5 pF • TTL level: VINH>3 V , VINL<0.5 V • Sine reference level: 0.2 V < VPP< 10 V, Freq. > 1 Hz |
| Phase | • Resolution: 0.001 deg • Absolute phase error: < 1 deg typ (<1 MHz), 5 deg max • Relative phase error: < 1 mdeg • Orthogonality: 90° ± 0.001° • Phase noise: (Internal ref.) Synthesized, <0.0001°rms at 1 kHz; (External ref.) 0.005°rms at 1 kHz (100 ms time constant, 12 dB/oct) • Drift: <0.01°/℃ below 100 kHz, <0.1°/℃ above 100 kHz |
| Harmonic Detection | 2F, 3F, …nF to 60 MHz (n<32767) |
| Acquisition Time | • Internal ref.: instantaneous acquisition • External ref.: (2 cycles + 5 ms) or 40 ms, whichever is larger |
| 3. Demodulator | |
| Stability | • Digital output: no zero drift on all setting • Display: no zero drift on all setting • Analog output: <50 ppm/℃ for all dynamic reserve settings |
| Harmonic Rejection | -90 dB |
| Time Constant | 30 ns to 4.4 ks (6,12,18,24, 30,36,42,48 dB/oct rolloff) |
| Synchronous Filters | Available below 200 Hz (18,24,30,36,42,48 dB/oct rolloff) |
| 4. Internal Oscillator | |
| Frequency | • Range: 1 mHz to 60 MHz • Accuracy: 2 ppm + 10 µHz • Resolution: 1 mHz |
| Distortion | • -80 dBc (f < 100 kHz) • -60 dBc (f > 1 MHz) |
| Amplitude | 1 μV to 1 Vrms |
| Accuracy | 0.5% typ (<1 MHz), 2% max |
| Stability | 50 ppm/℃ |
| TTL Output | 5V TTL/CMOS level, 50Ω output impedance |
| 5. Interface | USB2.0, RS-232(DB-9) and 1000Mbps Enthernet |
| 6. Inputs & Outputs | |
| AUX Inputs | • Function: 4 channel inputs • Voltage: ±10 V full scale, 0.1 mV resolution • Impedance: 1 MΩ |
| AUX/CH Outputs | • Function: 4 channel inputs • Voltage: ±10 V full scale, 0.1 mV resolution • Impedance: 1 MΩ |
| Drive Current | 30 mA max output current |
| 7. Display | |
| Screen | 5.6 inch, 640×480 TFT |
| Screen Format | Single or dual display |
| Display Quantities | Each display shows one trace, traces can be defined as X,Y,R,θ |
| Display Types | Numerical form, bar graph |
| 8. General | |
| Power Requirement | • Voltage: 220 – 240 VAC, 100 – 120 VAC (optional) • Frequency: 50/60 Hz • Power: 50 W typ, 70W max |
| Dimension | • 448 (W) × 148 (H) × 513 (D) mm (with feet) • 448 (W) × 133 (H) × 513 (D) mm (without feet) |
| Weight | 12 kg |
Main Machine
| Module No. | Item | Description |
| SE2041 | Digital Lock-in Amplifier | 1 mHz to 60 MHz, 1 nV to 1 V full-scale sensitivity |
