SE2031 DSP Lock-In Amplifier

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SE2031 DSP Lock-In Amplifier

Overview Specifications Ordering Resources

SE2031 Digital Lock-in Amplifier, DC–10 MHz, 250MSa/s, 14 Bit

• Leveraging the advantages of the latest digital signal processing technology and high-speed 16-bit ADCs, it can effortlessly detect the phase and amplitude of faint signals submerged within various types of intense noise.

• Its performance not only rivals that of lock-in amplifiers from top-tier brands but, in specific parameters such as measurement accuracy, signal-to-noise ratio (SNR), and dynamic reserve, even surpasses them.

• Incorporating specialized features—such as multi-harmonic measurement—it is fully capable of meeting the diverse requirements of both scientific research and industrial applications.

Unit Price: US$13,794.00

2 day

Key Features

1 mHz to 10 MHz frequency range

1 nV to 1 V full-scale sensitivity

Time constants from 30 ns to 4 ks

> 120 dB dynamic reserve

A high-performance signal generator

Oscilloscope, spectrum analyzer

PID controller, AM modulation

Up to 4 demodulators

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

Multiple Application Areas

Scanning microscope: AFM, STM, SPM

Materials: Carrier mobility, Carrier density, Hall effect, Ultrasonic materials

Transport measurement: Conductivity measurement, Impedance measurement

Noise represents: Noise density, Cross-correlation measurement

Optical experiment: Spectral analysis, Spectral measurement, THz measurement, TDLAS

Sensor measuring: Gyroscope, Photoelectric sensor, Resonator, Accelerometer

Magnetic Sensor: SQUIDs, NV color center, Atomic Magnetometer, VSM

Biomedical: Microfluidic

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EPR Measurement

Electron paramagnetic resonance (EPR) or electron spin resonance (ESR) is one of the most informative techniques for understanding the electronic structure of paramagnetic substances. EPR spectroscopy is particularly useful for studying (bio)chemical systems with strong local spin densities and their interactions with the environment.

EPR measurements are usually performed in continuous wave (CW) or pulsed (Pulse) mode. The cwEPR spectrometer (see figure) applies a magnetic field of about 0.35 T and measures microwave absorption (X-band) in the 9-10 GHz range. Typically, the microwaves are kept at a fixed frequency and sweep the magnetic field (from 0 mT – 700 mT for the X-band).
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// 5pF or 10 MΩ// 5pF, 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
Voltage 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 10 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 10 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 10 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 and 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: 40 W
Dimension	• 448 (W) × 148 (H) × 513 (D) mm (with feet) • 448 (W) × 133 (H) × 513 (D) mm (without feet)
Weight	12 kg