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Moku:Lab多功能测量仪之锁相放大器(Lock-in Amplifier)介绍
发布:泰初科技(天津)有限公司浏览次数:2167Moku:Lab多功能测量仪之200MHz锁相放大器可用于探测被噪声掩埋的微弱电压信号。直观的用户界面允许用户使用整个框图中的探针点(probe points)极ng确配置系统并监控其性能。
主要特色
1、数字信号处理的方框图视图,内置探针点(probe points),用于信号的监测。
2、解调信号的频率高达200 MHz
3、测量被噪声淹没的信号,动态储备超过80 dB。
Moku:Lab多功能测量仪之200MHz锁相放大器视频展示Moku:Lab多功能测量仪之锁相放大器的应用案例
Moku:Lab多功能测量仪之锁相放大器的规格参数Signal channel
Input characteristics
Input frequency range
1kHz - 200MHz
Input voltage range
±0.5 V into 50Ω
Input impedance
50Ω/1MΩ
Input coup领
AC/DC
Demodulator
Sources
Internal Reference oscillator, Internal Auxiliary oscillator, External direct, External with phase-locked loop
Types
Internal, External with PLL: Sine (In-phase)/Cosine (Quadrature)
External direct: Sine (In-phase)
Input gain2
-20 dB/0 dB/+24 dB/+48 dB
Filter mode
Low-pass filter
Filter cut-off frequency range
237 mHz - 3.98 MHz
Filter time-constant
251 ns - 4.219 s
Filter slope
6 dB or 12 dB per octave
Phase shift precision
0.001°
Gain accuracy
±1%
Dynamic reserve
Better than 80 dB
PLL frequency range
2 MHz - 200 MHz
PLL bandwidth
10 kHz
Reference oscillator
Reference and Auxiliary oscillators
Waveform
Sine
Frequency range
1 mHz - 200 MHz
Frequency resolution
3.55μHz
Distortion
<-70 dBc for frequencies lower than 10 kHz
<-60 dBc for frequencies greater than 10 kHz
2+24 dB and +48 dB input gains are applied digitally and can be used to maximise the Lock-In Amplifier’s dynamic range for weak input signals.
Signal output
Output routing
Output sources
X, Y (cartesian mode); R,Θ(polar mode); Auxiliary Oscillator
Output processing
Direct, PID3
Number of output channels
2
Polar-mode
0.8 V per cycle
Gain profiles
Proportional (P), integral (I), differential (D), integral saturation (IS), differential saturation (DS)
Controller frequency range
100 mHz - 10 MHz
Proportional gain
±60 dB
Integrator crossover frequency
1.00 Hz to 100 kHz
Differentiator crossover frequency
10 Hz to 1 MHz
Signal output
Output voltage range (peak AC + DC)
±0.5 mV to ±1 V into 50Ω
Gain range
-80 dB to +80 dB
Saving Data
Saving data
File formats
Plain text: records data using a standard CSV format
Binary: records data using a proprietary LI format for high-speed data logging.
Note: data saved using the LI format must be converted to plain text using the LI file converter available here:
https://github.com/liquidinstruments/lireader
Maximum samp领 rate
1 MSa/s into RAM (format: *.li binary) (single channel)
500 kSa/s into RAM (format: *.li binary) (two channels)
100 kSa/s into SD card (format: *.li binary)
20 kSa/s into RAM/SD card (format: *.csv)
Note: data saved to the Moku:Lab’s on-board RAM will be lost when the device is rebooted.
Export modes
SD Card, Dropbox, E-mail and iCloud, My Files (iOS 11)
Delayed log start time
Up to 240 hours
Log duration
1 second up to 240 hours
3Only one output may have a PID controller routing at a time
2019-01-13 -
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