DXA-203 DC-250 kHz Digital Lock-in Amplifier
| Input Signal Channel | |
| Input Mode | Voltage: Single-ended or Differential |
| Current: Single-ended | |
| Full-Scale Sensitivity | 1 nV to 5 Vrms |
| Range Levels | 2mV to 5V, total 7 levels |
| Input Coupling Mode | DC or AC coupling |
| Input Impedance | 10 MΩ || 25 pF (Voltage) |
| 100Ω or1 kΩ (Current) | |
| Input Shield Grounding | Grounding or 10 kΩ floating |
| Dynamic Reserve | >130 dB |
| Gain Accuracy |
0.5% typical, 1% max |
| Input Voltage Noise | 3.5 nV /√Hz（f ≥ 1 kHz） |
| 2.5 nV /√Hz（f ≥ 10 kHz） | |
| Input Current Noise | 20 fA /√Hz（f = 97Hz） |
| ADC Bit | 24 bit |
| Output Signal Channel | |
| Frequency Range | DC – 250kHz |
| Frequency Accuracy | 2 ppm + 1 μHz |
| Frequency Resolution | 1 nHz |
| Sine Amplitude | 0.1 μVrms to 5 Vrms |
| Accuracy | 0.5% typical, 2% max |
| Resolution | 0.1 μVrms |
| Driving Current | ± 80 mA max |
| Temperature Stability | <200 ppm/℃ |
| Output Impedance | 50 Ω |
| Adjustable DC Offset | -5 VDC to 5 VDC |
| Synchronous Output | 3.3V TTL/CMOS level |
| output impedance 50 Ω | |
| Additional Features | AM/FM/PM modulation output |
| DAC Parameter | 16 bit, 32 MSPS |
| Reference Signal Channel | |
| Reference Channel Number | 2 |
| Reference Signal | Frequency Range: 10 μHz – 250kHz |
| Supported Waveform: Square or sine wave | |
| Input Impedance: 1 MΩ | |
| Reference Levels | Square: 3V |
| Sine Frequency: > 1 Hz 300 mV < Vpp < 10 V |
|
| Phase | Resolution: 1.0 μdeg |
| Phase Error: ±0.5 deg typical, ±1 deg max | |
| Temperature Drift: < 200 ppm/℃ | |
| Harmonic Detection: 1-10000F (nF < 1.5 MHz) | |
| Acquisition Time | Internal Reference: Instantaneous acquisition |
| External Reference: 10 or 100 signal cycles | |
| Oscillator | |
| Oscillator Number | 2 |
| Oscillator Parameters | Accuracy: 0.3 ppm |
| Temperature: Stability 0.5 ppm/℃ | |
| Aging Rate: <1 ppm/year | |
| Phase Noise: -145 dBc/Hz (@1kHz) | |
| Demodulator | |
| Demodulator Number | 8 |
| Demodulator Bit | 64 bit |
| Time Constant | 100ns - 3ks |
| Measurement Bandwidth | 50 μHz – 1.6 MHz |
| Filter Slope (dB/oct) | 6, 12, 18, 24, 30, 36, 42, 48 |
| Synchronous Filter | <1000 Hz effective |
| Auxiliary Inputs/Outputs | |
| AUX Input | Function: 4-channel input |
| Amplitude: ±10V, 0.1 mV resolution | |
| Input Impedance: 1MΩ | |
| ADC: 16 bit, 150 kSPS | |
| AUX Output | Function: 4-channel output |
| Amplitude: ±10V, 0.1 mV resolution | |
| Driving Current: ±30 mA max | |
| DAC: 16 bit, 500 kSPS | |
| Communication Interfaces | |
| RS-232 | DB-9 female interface |
| USB2.0 | 480 Mbpshigh-speed interface |
| Ethernet | RJ45-1000Mbps |
| WIFI wireless etwork interface | |
| GPIB | IEEE-488.2interface |
| Others | |
| Power Supply | Voltage: 220-240 V AC; 100-120 V AC(optional) |
| Power: 50 W typical, 70 W max | |
| Power Noise Suppression | 70dB@1MHz |
| Dimensions | 448mm×532mm×148mm |
| Weight | 12 kg |
PC Software
The DXA-203 provides professional PC software that allows configuration of each demodulator, input channel, and output channel through schematic diagrams or control panels, combining professionalism and practicality with simplicity and intuitiveness. The software features clear numerical display and real-time waveform display functions. Users can save the measurement results exportable as CSV files for subsequent analysis using professional software, enhancing the ease of testing. Furthermore, we fully support application programming interfaces (API) in Python, MATLAB, and LabVIEW.
DXA-203C DUAL-CHLOCK-INAMPLIFIER
DC to 250kHz frequency;
Input noise as low as 2.5nV/√Hz;
Input range 1nV to 5Vrms;
Time constants from 100ns to 3ks;
>130 dB dynamic reserve;
8-channel demodulator synchronized measurements;
Spectrum analysis, Oscilloscope function;
2-channel PID controllers.
Input noise as low as 2.5nV/√Hz;
Input range 1nV to 5Vrms;
Time constants from 100ns to 3ks;
>130 dB dynamic reserve;
8-channel demodulator synchronized measurements;
Spectrum analysis, Oscilloscope function;
2-channel PID controllers.
