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OE1081

Multi-channel Digital Lock-In Amplifiers

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Characteristics


  • up to 8 independent input channels
  • 1 mHz to 350 kHz frequency range
  • 1 nV to 1 V full-scale sensitivity
  • Time constants extending from 1s to 3ks
  • >80 dB dynamic reserve
  • Automatic adjustment
  • Multiple-harmonic measurement
  • FFT spectral analysis
Overview
Downloads

Signal Channel
Voltage input Mode         Single-ended or Differential
Full-scale Sensitivity             1 nV to 1 V in a 1-2-5 sequence
Channel Mode8 independent channels
Amplitude Consistence<1%
Phase Consistence<1°
Impedance
   10 MΩ // 25 pF
      AC or Customized DC coupled
CMRR           >100 dB to 10 KHz, decreasing by 6 dB/oct
Dynamic reserve              >100 dB
Gain accuracy0.2% typ, 1% max
Noise13.3 nV/√Hz at 1kHz

10.7 nV/√Hz at 10kHz

10.8 nV/√Hz at 100kHz
Reference Channel   
Input
        Frequency range     1 mHz to 350 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°
Orthogonality90°±0.001°
        Internal ref.      Synthesized, <0.0001°rms at 1kHz
        External ref.      0.005°rms at 1 kHz (100 ms time constant, 12 dB/oct)
Harmonic detection              2F, 3F, …nF to 350 kHz (n<32,767)
Acquisition time
        Internal Ref.  Instantaneous acquisition
        External Ref.      (2 cycles + 5 ms) or 40 ms, whichever is larger
Demodulator
Stability      
        Digital outputs      no zero drift on all setting
        Display         no zero drift on all setting
        Analog outputs      <5 ppm/℃ for all dynamic reserve settings
Harmonic rejection -90 dB
Time constants10 us to 3 ks (<200 Hz)

10 us to 30 s (>200 Hz)  (6, 12, 18, 24 dB/oct rolloff)
Synchronous filtersAvailable below 200 Hz (18,24 dB/oct)
Display
Screen format                Single or dual display
Display types               Large numeric readout, bar graph, polar plot and strip chart
Internal Oscillator
Frequency
        Range          1 mHz to 350 kHz
        Accuracy           2 ppm + 10 uHz
        Resolution        1 mHz
Distortion-80 dBc (f<10 kHz), -70 dBc (f>10 kHz)
Amplitude                  0.001 to 5 Vrms
Interfaces
USB 2.0 high speed interfaces and RS-232 interfaces are provided
Outputs
All Channel Outputs
          Function       X, Y, R, θ for each channel
          Amplitude          ±5 V
        Impedance           50 Ω output impedance
General
Power Requirements
        Voltage          220/240V AC
           110/120V AC(optional)
        Frequency           50/60Hz
         Power         50W
Distortions
         Width 310 mm
         Depth     445 mm
      Height
                   With feet 128 mm
                   Without feet 105 mm
Weight 11.9 KG