SE2041 DSP Lock-In Amplifier

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SE2041 DSP Lock-In Amplifier

Overview Specifications Ordering Resources

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 Unit Price: US$20,166.00

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

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

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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: V_INH>3 V , V_INL<0.5 V • Sine reference level: 0.2 V < V_PP< 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