Features
- Current and voltage input
- Working frequency up to 45 kHz
- Adjustable sensitivity, time constant and phase
- Local and remote control
- Compact and EMI-shielded case
| Model | LIA-MV-150-S Standard | LIA-MV-150-D Symmetrischer Eingang |
|---|---|---|
| Voltage Input | BNC socket, single ended, Instrumentation amplifier, noise 12 nV/√Hz | Lemo® socket, differential, instrumentation amplifier, noise 12 nV/√Hz |
| Current Input | BNC socket, transompedance amplifier, gain 1 kV/A, noise 13 pA/√Hz | Lemo® socket, transimpedance amplifier, gain 1 kV/A, noise 13 pA/√Hz |
| Input Sensitivity (Full Scale) | voltage: 3 µV bis 100 mV, current: 3 nA bis 100 µA, switchable in steps of 1-3-10 | |
| Working Frequency | 10 Hz – 45 kHz | |
| Reference Input | ±100 mV to ±5 V, switchable to TTL | |
| Phase | adjustable 0° – 360° (8-bit resolution), temperature drift <0,01°/K | |
| Demodulator Dynamic Reserve | 35 dB @ low drift setting, 55 dB @ high dynamic setting | |
| Time Constants | 3 ms to 10 s, switchable in 1-3-10 steps, slope switchable 6 dB or 12 dB/octave | |
| Output | X = in phase, ±10 V full scale, short-circuit protected | |
| Control Interface | 16 Opto coupler protected digital inputs, TTL/CMOS compatible 8 bit phase, 4 bit time constant, 4 bit sensitivity | |
| Power Requirements | ±15 V, 100 mA typ. | |
| Case | 170 x 60 x 30 mm (L x W x H), weight 370 g | |
| Datasheet | Download | |
Power supply via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet.
Compact module
In modern optoelectronic systems lock-in-amplification is one of the most useful techniques to get rid of unwanted noise and to improve the measurement sensitivity. Therefore we have created a miniaturized, powerful module operating reliably even in heavy noise environments.
Two ways of programming
The amplifier settings – e.g. phase, gain, time constant – are controlled either by switches directly on the amplifier module or externally using a standard digital I/O computer board. The variable working frequency is determined by an external reference signal which may be e.g. the synchronization signal of a chopper wheel or the modulation signal of a laser. The current input is well suited for amplifying signals from high impedance sources like photodiodes or PMTs while the voltage input can be used to measure signals from low impedance sources like pyros or coils.
Block Diagram LIA-MV-150
Applications
- Spectroscopy
- Laser stabilization
- Luminescence, fluorescence, phosphorescence measurements
- Light scattering measurements
- Opto-electronical quality control
- Integration in industrial and scientific measurement systems
- OEM systems
