SE2052 Digital Lock-in Amplifier provides an excellent performance within its bandwidth from DC to 400 MHz. With the advantage of the latest digital signal processing technology and high-speed 1GSa/s 14-bit ADC, SE2052 can easily detect the phase and the magnitude of weak signals overwhelmed by various large noises. The performance of SE2052 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.
SE2052 DSP Lock-In Amplifier (Dual-channel)
Key Features
DC to 400MHz frequency
2 independent lock-in units
Dual signal generators
>120 dB dynamic reserve
4nV/√Hz input noise
Oscilloscope, spectrum analyzer
Automatic PID control
| 1. Dual Channel Signal Channel | |
| Frequency range | DC to 400MHz |
| Voltage input mode | Single-ended or Differential |
| Full-scale sensitivity | 1 nV to 2 V in a 1-2-5 sequence |
| Impedance | 50 Ω or 10 MΩ//15 pF, AC or DC coupled |
| Dynamic reserve | > 120 dB |
| Gain accuracy | 0.2% standard, 1% maximum |
| Equivalent input noise | 4 nV/√Hz (> 100kHz) |
| Analog-to-digital conversion | 14bit, 1GSa/s |
| 2. Dual Reference Channel | |
| Input | • Frequency range: DC to 400 MHz • Reference input: Square or Sine Wave • Input impedance: 50Ω or 10 MΩ//15 pF, AC or DC coupled • TTL level: VINH>3 V , VINL<0.5 V • Sine reference level: Freq. > 1 Hz, > 300 mVpp |
| Phase | • Resolution: 1u° • Absolute phase error: <1° • Differential phase error: <0.001° |
| Harmonic detection | 1 – 65535F (nF < 400MHz) |
| Acquisition time | • Internal ref.: instantaneous acquisition • External ref.: 100 signal cycles or 1.5 ms (>100kHz) |
| 3. Two Signal Generators | |
| Frequency range | DC to 400MHz |
| Frequency resolution | 1 uHz |
| Sine amplitude | • Sine amplitude: 1uVrms to 1.5 Vrms • Resolution: 1uVrms • Tolerance: 0.5% standard, 1% maximum • Temperature stability: 100 ppm/°C |
| Bias range | ±3V |
| Output impedance | 50Ω |
| 4. Demodulator | |
| Number | 2 |
| Input signal selection | Signal Channel CHA or Signal Channel CHB |
| Stability | • Digital output: no zero drift on all setting • Display: no zero drift on all setting |
| Harmonic rejection | -90 dB |
| Time constant | 25 ns to 4.4 ks 6,12,18,24 dB/oct steepest fall-off |
| Measurement bandwidth | 40uHz to 6MHz |
| Filter drop | 6,12,18,24,30,36,42,48 dB/oct drop |
| 5. Display | |
| Screen | 5.6-inch, 640 x 480 TFT color LCD screen |
| Screen format | Single-channel or dual-channel display |
| Display values | X,Y,R,θ values can be displayed on each channel |
| Display type | Digital display, bar graph |
| Color style | Yellow, Green |
| 6. Auxiliary Inputs and Outputs | |
| AUX inputs | • Function: 4-channel input • Amplitude: ±10 V, 0.1 mV resolution, 0.1% + 20 mV accuracy • Impedance: 1 MΩ |
| AUX outputs / CH outputs | • Function: 4-channel output • Amplitude: ±10 V, 0.1 mV resolution, 0.1% + 20 mV accuracy • Drive Current: ±30 mA max |
| Sync input/output | Function: 3.3V TTL external trigger for data storage |
| 10MHz clock input/output | Function: Instrument clock input/output for multi-computer synchronization |
| 7. Communication Interface | |
| RS-232 | Standard 9-array RS-232 female socket |
| USB2.0 | USB2.0 high-speed communication interface |
| Enternet | 1Gbps Gigabit network communication interface |
| Digital I/O | Bidirectional 16bit |
| 8. General | |
| Power requirement | • Voltage: 220 – 240 VAC • Frequency: 50 Hz • Power: 90 W typ, 100W max |
| Power supply noise suppression | 70dB@1MHz |
| Dimension | 448 (W) × 148 (H) × 515 (D) mm (with feet) |
| Weight | 12 kg |
Main Machine
| Module No. | Item | Description |
| SE2052 | Digital Lock-in Amplifier (Dual-channel) | DC to 400 MHz, 1 nV to 2 V full-scale sensitivity |
