SE1300 Series Module Lock-In Amplifier

Overview Specifications Ordering Resources

♦ Advanced Zynq Architecture & Digital Detection Technology

At the core of the SE1300 series is an innovative new Zynq architecture, paired with digital modulation technology, optimized output filtering and a high-resolution 24-bit analog-to-digital converter (ADC).

This hardware-software co-design enables fast and precise identification of target signals buried in intense broadband noise, delivering stable, repeatable results even in harsh electromagnetic environments.

♦ Industry-Leading Core Performance

This modular lock-in amplifier supports simultaneous measurement of both amplitude and phase information of input signals. Its key performance specifications — including measurement accuracy, operating frequency range, signal-to-noise ratio and dynamic reserve — are fully comparable to the world’s leading lock-in amplifier technologies, ensuring premium measurement performance for professional users.

♦ All-In-One Functions for Diverse Applications

Beyond standard phase-sensitive detection, the SE1300 series integrates newly developed expanded functions: multi-harmonic measurement, built-in oscilloscope and spectrum analyzer capabilities.

This multi-functional design reduces the need for separate test instruments, allowing a single module to meet a full range of measurement demands in scientific research and industrial production scenarios.

♦ Pricing:

SE1311 (DC to 100KHz): US$ 4,562.00

SE1351 (DC to 500KHz): US$ 5,042 .00
SE1301 (DC to 1MHz): TBD

Need technical support or a custom solution? Contact our application engineers: saluki@salukitec.com.

To request a quotation, please contact sales@salukitec.com or click “Contact Us” to leave a message.

Key Features

Measurement frequency range: DC to 1 MHz

Time constant: 1 μs to 3 ks

Noise floor as low as 5 nV/√Hz

Dynamic reserve up to 130 dB

PC Software Operation

It is accompanied by dedicated graphical host software. Featuring convenient graphical buttons and a comprehensive suite of graphical operation functions, the software also offers clear numerical and waveform display capabilities, allowing for the real-time visualization of measurement data. Measurement results can be exported and saved as CSV files for subsequent analysis using specialized software, ensuring a seamless and efficient testing experience. Furthermore, we provide full support for Python, MATLAB, and LabVIEW Application Programming Interfaces (APIs).
PID Control Interface

The SE1300 series features a built-in, independent 2-channel digital PID controller. Benefiting from the high-speed processing capabilities of an FPGA, the PID sampling rate reaches up to 4 MSa/s. The PID algorithm is straightforward and intuitive; its control parameters are largely independent of one another, making parameter selection relatively simple. The PID controller delivers stable and precise control, adapts effectively to a wide variety of systems, and efficiently handles dynamic system changes, thereby making it suitable for a broad range of applications.
Multi-demodulator

In traditional lock-in amplifiers, it is possible to measure only the fundamental frequency signal or a specific harmonic component at any given time. Consequently, for applications requiring the simultaneous measurement of the amplitude and phase of multiple frequency components, traditional lock-in amplifiers are unable to meet the necessary measurement requirements. The digital section of the SE1300 series integrates FPGA and ARM technologies to achieve higher processing bandwidth and a more flexible digital architecture. It offers a digital processing precision of up to 48 bits and is capable of simultaneously analyzing input signals at up to eight arbitrary frequencies. The eight demodulators can be freely configured for amplitude and phase, enabling linear combinations.
Oscilloscope

The oscilloscope features a 4 MSa/s analog input channel with a 3 MHz analog bandwidth, a 5 Vrms input voltage range, and user-configurable AC/DC coupling and 10 MΩ impedance.
Spectrum Analyzer

The spectrum analyzer allows for the observation of input signals ranging from DC to 2 MHz in the frequency domain. Additionally, it features a resolution bandwidth as low as 1 Hz and a minimum span of 100 Hz.
FAQ

1. Definition and Core Functions of Lock-In Amplifiers.

2. Key Performance Parameters of Lock-In Amplifiers Explained.

3. Common Noise Categories in Electronic Measurement System.

4. Core Advantages of Digital Over Traditional Analog Lock-In Amplifiers.

5. Signal Input Mode Selection and Noise Suppression Solutions.

6. USB Connection Setup Guide for Lock-In Amplifiers on Windows.

7. Typical Application Fields and Use Cases of Lock-In Amplifiers.

8. Parameter Configuration for Fast-Changing Amplitude Signal Measurements.

9. Feasibility of Non-Sinusoidal Periodic Signal Detection With Lock-In Amplifiers.

10. Applicable Scenarios for Reference-Free Lock-In Measurement.

11. Selection Principles for Internal vs. External Reference Modes.

12. Weak DC Signal Detection Solutions for AC-Only Lock-In Amplifiers.

13. Measurable Parameters and Information Extraction of Lock-In Amplifiers.

1. Signal Channel
Voltage Input Mode	Single-ended or Differential
Full-scale Sensitivity	1 nV to 5 V in a 1-2-5 sequence
Current Input	10⁶ V/A
Impedance	Voltage: 10 MΩ // 10 pF, AC or DC coupled Current: 1 kΩ to virtual ground
C.M.R.R	> 70 dB to 10 kHz, decreasing by 6 dB/oct
Dynamic Reserve	> 120 dB
Gain Accuracy	0.2% typ, 1% max
Voltage Noise	5 nV/√Hz at 997 Hz
Current Noise	260 fA/√Hz at 997 Hz
2.Reference Channel
Input	Frequency range: 1 uHz to 100 kHz/500 kHz/1 MHz Reference input: TTL or Sine Input impedance: 10 MΩ
Phase	Resolution: 1 µdeg Absolute phase error: < 1 deg Relative phase error: < 0.001 deg 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 10 kHz, <0.1°/℃ above 10 kHz
Harmonic Detection	2F, 3F, …nF to 1 MHz (n<65,535)
Acquisition Time	Internal ref.: instantaneous acquisition External ref.: (3 cycles + 5 ms) or 40 ms, whichever is larger
3. Demodulator
Quantity	8
Stability	Digital output: no zero drift on all setting Display: no zero drift on all setting Analog output: <5 ppm/℃ for all dynamic reserve settings
Harmonic Rejection	-75 dB
Time Constant	1 µs to 3 ks (<200 Hz) (6, 12, 18, 24, 30, 36, 42, 48 dB/oct rolloff)
Synchronous Filters	Effective below 1 kHz and steeper than 18 dB/oct
4. Internal Oscillator
Frequency	Range: 1 mHz to 100 kHz/500 kHz/1 MHz Accuracy: 2 ppm + 10 µHz Resolution: 1 uHz
Distortion	-80 dBc (f<10 kHz) -70 dBc (f>10 kHz)
Amplitude	100 nVrms to 5 Vrms 10nVrms Resolution
Accuracy	1%
Stability	100 ppm/℃
Sine Output	Sine signal output impedance is 50Ω
TTL Synchronous	5V TTL/CMOS level
5. Communication Interfaces	UART: XH2.54-4PIN Network interface: Isolated 1000Mbps RJ45 interface
6. Outputs
AUX Outputs	Function: output X, Y, R, θ, harmonic Amplitude: ±10 V, 1 mV resolution Impedance: 100 Ω
AUX Inputs	Function: 2 channel input Amplitude: ±10 V Impedance: 1 MΩ
7. General
Power Requirement	Voltage: 12VDC±5% Power: Standard 15W, maximum 24W
Dimension	180 (L) × 44 (H) × 106 (D) mm

Main Machine

SE1311	Module Lock-In Amplifier	DC to 100 kHz
SE1351	Module Lock-In Amplifier	DC to 500 kHz
SE1301	Module Lock-In Amplifier	DC to 1 MHz

Document