FEMTO的LIA-BV(D)-150系列的锁定放大器被设计了能在EMI-设计情况下操作的19 ¹¹板,它能提供好的保护可能性和抑噪声的可能性。它是多性能、多通道系统的选择。
锁定放大器本质上是一个频率选择交流电压表。它用于测量微弱信号(nV范围),这些信号可能被比信号高得多的背景噪声所隐藏。测量过程也称为载频法或相敏检测。锁定放大器从大多数不需要的频率的混合中选择具有特定频率和相位的信号。
测量原理:生成正弦参考频率(载波频率)并将其传送到测量对象,测量对象对其进行调制。产生的调幅测量信号在锁定放大器中被放大,通过带通滤波器,到达同步整流器(或解调器、相敏解调器(PSD)、乘法器或混频器)。信号的整流是通过乘以参考频率来完成的。整流后的电压被均衡和再放大。
应用
光谱学
发冷光、荧光、磷光测量
光散射测量
光电质量控制
工业集成和科学计量
多通道系统。
LIA-BV-150-L、LIA-BV-150-H、LIA-BVD-150-L、LIA-BVD-150-H
Model | LIA-BV-150-L | LIA-BV-150-H | LIA-BVD-150-L | LIA-BVD-150-H |
Working Frequency | 5Hz…10kHz | 50Hz...120kHz | 5 Hz ... 10 kHz | 50 Hz ... 120 kHz |
Time Constants | 3ms-10s 6 or 12 dB/Oct. | 300 µs - 1 s | 3 ms - 10 s | 300 µs - 1 s |
Outputs | X = InPhase, X = In Phase, Y = Quadrature, | |||
10 V FullScale, R = Magnitude, 10 V Full Scale, | ||||
Short-CircuitProtected, Short-Circuit Protected, | ||||
MonitorOutput Monitor Output | ||||
Sensitivity (Full Scale) | Voltage: 3 µV - 1 V in 1-3-10 steps | |||
Current: 30 pA - 10 µA in 1-3-10 steps | ||||
Voltage Input | True-differential instrumentation amplifier, noise 12nV/√Hz | |||
Current Input | Transimpedance amplifier, gain 100 kV/A, noise 0.4pA/√Hz | |||
Signal Filter | Highpass 0.2 Hz - 1 kHz and lowpass 100 Hz - 1MHz, | |||
Reference Input | 100 mV to 5 V, switchable to TTL | |||
Phase | Adjustable 0° - 360° with 8 Bit resolution, | |||
Max. Dyn. Reserve | 80 dB | |||
Digital Control | 16 TTL/CMOS inputs: 8 Bit phase, 4 Bit time constant, 4Bit sensitivity | |||
Power Supply | ±15 V, +120 mA / -60 mA | |||
Dimensions | 160 x 100 x 20 mm (L x W x H), Weight 100 g (0.22lbs) |