2f (3f)-mode:锁相放大器检测两倍(三倍)参考频率
直流稳定性 :漂移参数,表示锁定放大器输出的电压漂移水平,以ppm/K 为单位,相对于输出满量程信号
差分输入:返回线将测量信号施加到锁定放大器差分级反相输入,从而消除了接地回路和电位差的问题
DSP锁定放大器:锁定技术,将测量信号数字化。参考信号的乘法是通过数字信号处理器执行的。优点是高动态和稳定性。
动态储备:一个非常复杂的参数,需要更详细的解释。一个基本定义是:以 dB 为单位的因子,通过该因子,杂散信号可能会大于设置的满量程灵敏度,而不会过度驱动锁定。杂散信号的定义很大程度上取决于频率范围。动态储备越高,输出直流稳定性越低。
远程控制示例
例如,要选择开关设置代码“6”,必须将“高”电平信号连接到相应的控制输入引脚Bit 1和Bit2。当“禁用本地开关控制”(引脚C24)未激活(“低”或未连接)时,也可以进行混合操作,例如本地相位设置和远程控制灵敏度设置。
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 = In Phase, X= In Phase, Y = Quadrature, | |||
10 V Full Scale, R= Magnitude, 10 V Full Scale, | ||||
Short-CircuitProtected, Short-CircuitProtected, | ||||
Monitor Output MonitorOutput | ||||
Sensitivity (FullScale) | Voltage: 3 µV - 1 V in 1-3-10steps | |||
Current: 30 pA - 10 µA in 1-3-10steps | ||||
Voltage Input | True-differential instrumentationamplifier, noise 12 nV/√Hz | |||
Current Input | Transimpedance amplifier, gain 100kV/A, noise 0.4 pA/√Hz | |||
Signal Filter | Highpass 0.2 Hz - 1 kHz and lowpass100 Hz - 1 MHz, | |||
Reference Input | 100 mV to 5 V, switchable toTTL | |||
Phase | Adjustable 0° - 360° with 8 Bitresolution, | |||
Max. Dyn. Reserve | 80 dB | |||
Digital Control | 16 TTL/CMOS inputs: 8 Bit phase, 4Bit time constant, 4 Bit sensitivity | |||
Power Supply | ±15 V, +120 mA / -60 mA | |||
Dimensions | 160 x 100 x 20 mm (L x W x H),Weight 100 g (0.22 lbs) |