SE1201 DSP Lock-In Amplifier

SE1201 Small-sized Digital Lock-in Amplifier provides an excellent performance within its bandwidth from 50 mHz to 120 kHz. With the high-speed 4-core architecture, high-precision ADC and excellent analog performance, SE1201 can easily detect the phase and the magnitude of weak signals overwhelmed by various large noise. The performance of SE1201 is as good as other lock-in amplifiers brands, even better in some certain parameters, such as measurement accuracy, operating bandwidth, which meets the needs of scientific research and industrial application well.

Key Features

50 mHz to 120 kHz frequency range

Low-noise current and voltage inputs

1 nV to 1 V full-scale sensitivity

Time constants from 10 µs to 3 ks

Up to 100 dB dynamic reserve

Up to 100 dB CMRR

3.5 inch color TFT-LCD screen, Small size (259*320*102 mm)

Support remote control, embedded a free LabVIEW program

1. Signal Channel
Voltage Input Mode

Single-ended or Differential

Full-scale Sensitivity

1 nV to 1 V in a 1-2-5 sequence

1 fA to 1 µA

Current Input

106 or 108 V/A

Impedance

•  Voltage: 10 MΩ // 25 pF, AC or DC coupled

•  Current: 1 kΩ to virtual ground

C.M.R.R

> 100 dB to 10 kHz, decreasing by 6 dB/oct

Dynamic Reserve

> 100 dB

Gain Accuracy

0.2% typ, 1% max

Voltage Noise

9 nV/√Hz at 997 Hz

Current Noise

•  0.13 pA/√Hz at 97 Hz

•  0.14 pA/√Hz at 997 Hz

Line Filters

50/60 Hz and 100/120 Hz

Gounding

BNC shield can be grounded or floated via 10 kΩ to ground

2. Reference Channel
Input

•  Frequency range:  50 mHz to 120 kHz

•  Reference input: TTL or Sine

•  Input impedance: 1 MΩ//25 pF

Phase

•  Resolution: 0.01°

•  Absolute phase error: < 1°

•  Relative phase error: < 0.01°

•  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, <0.5°/℃ above 10 kHz

Harmonic Detection

2F, 3F, …nF to 120 kHz  (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: <5 ppm/℃ for all dynamic reserve settings

Harmonic Rejection

-90 dB

Time Constant

•  10 µs to 3 ks (<200 Hz)

•  10 µs to 30 s (>200 Hz)

(6, 12, 18, 24 dB/oct rolloff)

Synchronous Filters

Available below 20 Hz

4. Internal Oscillator
Frequency

•  Range: 50 mHz to 120 kHz

•  Accuracy: 2 ppm + 10 µHz

•  Resolution: 1 mHz

Distortion

•  -80 dBc (f < 10 kHz)

•  -70 dBc (f > 10 kHz)

Amplitude

0.10 to 1 Vrms

Accuracy

1%

Stability

50 ppm/℃

Output

Sine output on rear panel, and TTL sync output on rear panel

5. Interface

RS-232 and RS-232 to USB interface

6. Outputs
CH1 and CH2 Outputs

•  Function: output X, Y, R, θ

•  Output voltage: ±5 V full scale, 30 mA max output current

7. Display
Screen

3.5 inch, 320×240 TFT

Display Quantities

4 channels of data to display X,Y,R,θ

Display Types

Numerical form

8. General
Power Requirement

•  Voltage: 220 – 240 VAC, 100 – 120 VAC (optional)

•  Frequency: 50/60 Hz

•  Power: 20 W

Dimension

•  259 (W) × 115 (H) × 320 (D) mm  (with feet)

•  259 (W) × 102 (H) × 320 (D) mm  (without feet)

Weight

3.2 kg

Main Machine

Module No. Item Description
SE1201 Digital Lock-in Amplifier 50 mHz to 120 kHz, 1 nV to 1 V full-scale sensitivity

Leave A Message