SE1354 Multichannel Lock-In Amplifier

Overview Specifications Ordering Resources

The number of channels of SE1354 multi-channel lock-in amplifier can be flexibly customized (up to 10 channels are optional), and the bandwidth is 1uHz-100kHz/500kHz/1MHz optional; each channel is an independent and synchronous lock-in unit, and each channel contains: Voltage signal single-ended Input, voltage signal differential input, current signal input, TTL reference signal, sinusoidal reference signal input, TTL reference signal output, sinusoidal signal output, 2 auxiliary signal outputs and 2 auxiliary signal inputs.
The multi-channel lock-in amplifier SE1354 is a powerful tool specially developed for customers who need to measure multiple channels at the same time. Its excellent measurement accuracy and high integration make the customer’s system more integrated and measurement more convenient. Each channel can simultaneously realize the measurement of 1 fundamental wave and 7 harmonic demodulation channels. And 7 channels of harmonics can also be set to any frequency mode.

3 channels Unit Price: US$21,609.00
4 channels Unit Price: US$26,411.00
5 channels Unit Price: US$31,212.00
6 channels Unit Price: US$36,014.00
7 channels Unit Price: US$40,816.00
8 channels Unit Price: US$45,618.00
9 channels Unit Price: US$50,420.00
10 channels Unit Price: US$55,222.00

Key Features

Number of channels 3 to 10 channels optional

Frequency range 1μHz to 100kHz/500kHz/1MHz

1nV to 5V voltage measurement range

Time constants 1us to 3ks

Noise down to 5nV√Hz

8 arbitrary frequency demodulators per channel

Dynamic reserve up to 130dB

Communication interface: RS232, USB, network port

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 multi-channel lock-in amplifier features two independent, built-in digital PID controllers. Leveraging 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, adapting effectively to a wide variety of systems and efficiently handling dynamic system changes, thereby making it suitable for a broad range of applications.
Multi-demodulator

In traditional lock-in amplifiers, only the fundamental frequency signal or a specific harmonic component can be measured 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 a multi-channel lock-in amplifier integrates FPGA and ARM technologies to achieve greater 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 up to eight input signals at arbitrary frequencies. Its 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.

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 μHz to 1 MHz Reference input: TTL or Sine Input impedance: 10 MΩ
Phase	Resolution: 1 µdeg Absolute phase error: < 1 deg Relative phase error: < 0.01 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
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	Below 1 kHz, a steep rolloff of greater than 18 dB/octave is effective.
4. Internal Oscillator
Frequency	Range: 1 µHz – 1 MHz Accuracy: 2 ppm + 10 µHz Resolution: 1 uHz
Distortion	-80 dBc (f < 10 kHz) -70 dBc (f > 10 kHz)
Amplitude	100 µVrms to 5 Vrms
Accuracy	1%
Stability	100 ppm/℃
Sine Output	Sine signal output impedance is 50Ω
TTL Synchronous	5 V TTL/CMOS level
Output	output impedance 200Ω
5. Communication Interfaces	RS-232: standard 9-array RS-232 female socket
USB2.0	USB2.0 high-speed communication interface
6. Outputs
CH1 and CH2 Outputs	Function: output X, Y, R, θ Amplitude: ±10 V Drive Current: ±30 mA max
AUX Inputs	Function: 2 channel input Amplitude: ±10 V Impedance: 1 MΩ
7. General
Power Requirement	Voltage: 220 – 240 VAC Frequency: 50 Hz / 60 Hz Power: 50 W to 200 W
	(Note: see more detail information in the ‘Resource’ – ‘Datasheet’)

Main Machine

SE1354

Multichannel Lock-In Amplifier

1μHz-100kHz/500kHz/1MHz optional, 3 to 10 channels optional, 1 nV to 5 V voltage measurement range

Document

SE1354 Multichannel Lock-In Amplifier Datasheet