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Series LIA-MV(D)-200

  • Single and Dual Phase
  • Rugged Aluminum Housing
  • BNC Connectors for Input and Output Signals
  • Working Frequency 5 Hz up to 120 kHz
  • Phase Shifter 0 … +360°
  • Current and Voltage Input
  • Optional Reference Oscillator Module SOM-1 Available

Lock-in amplifier as a Standard

The high prices for usual desktop lock-in amplifiers mean that they are not as common in noise limited experiments as would be desirable. For this reason FEMTO designed a complete, easy-to-use and high performance Lock-In Amplifier expanding the reach of lock-in amplifiers into cost-sensitive applications.

Program the Lock-in amplifier manually or by computer

The Series LIA-MV(D)-200 Lock-in amplifiers are designed as stand-alone units which can be programmed both manually by front-panel switches and remotely by a digital interface. By using a PC with a standard digital I/O card all main settings for sensitivity, time constant and phase shift can easily be controlled. Therefore, the Series LIA-MV(D)-200 Lock-in amplifiers are the ideal tool for integration into complex or automated test systems as well as for use as standard lab unit in cost-sensitive applications.


  • Spectroscopy
  • Luminescence, Fluorescence, Phosphorescence Measurements
  • Light Scattering Measurements
  • Laser Stabilization
  • Opto-Electronical Quality Control
  • Integration into Industrial and Scientific Measurement-Systems
  • Alternative to Expensive Desktop Lock-In Amplifiers for General Lab Use


Lock-in Amplifiers Selector

Single Phase
Single Phase
Dual Phase
Dual Phase
Working Frequency5 Hz...10 kHz50 Hz...120 kHz5 Hz...10 kHz50 Hz...120 kHz
Time Constants3 ms-10 s300 μs-1 s3 ms-10 s300 μs-1 s
Outputs (BNC)X = In Phase
BNC, ±10 V Full Scale, Short-Circuit Protected
X = In Phase
BNC, ±10 V Full Scale, Short-Circuit Protected
X = In Phase, Y = Quadrature,
R = Magnitude,
X = In Phase, Y = Quadrature,
R = Magnitude,
Sensitivity (Full Scale)Voltage: 3 μV - 1V in 1-3-10 Steps
Current: 30 pA - 10μA in 1-3-10 Steps
Gain Accuracy± 2% for a Sinusoidal Input Signal
Voltage InputBNC, True Differential Instrumentation-Amplifier, Noise 12 nV/√Hz
Current InputBNC, Transimpedance Amplifier, Gain 100 kV/A, Noise 0.4 pA/√Hz
Signal FilterHigh Pass 0.2 Hz - 1 kHz and Low Pass 100 Hz - 1 MHz, User Selectable
Reference InputBNC, ± 100 mV to ± 5 V, switchable to TTL
PhaseAdjustable 0 - 360°
Demodulator80 dB Max. Dynamic Reserve, Square Wave Mixer
Control Interface16 Opto-Isolated Digital Inputs, TTL/CMOS Compatible
Interface Software OptionLUCI-10 Control Interface Software and Hardware option
Dimensions223 x 105 x 65 mm (L x W x H), Weight 1,000 gr. (2.2 lbs)
LED overload, unlocked and power indication. Connectors for an optional SOM-1 Reference Oscillator Module are inside the module. Power supply ±15V via 3-pin LEMO socket. A mating connector is provided with the device.  Optional power supply PS-15 is available. For further information please view the datasheet.
Block Diagram LIA-MVD-200-L

FEMTO Product Catalog

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