취리히 인스트루먼트사의 MFLI은 중간 주파수 범위와 낮은 주파수 범위의 새로운 기준을 설정하는 디지털 락-인 앰플리파이어입니다.
MFLI은 DC에서 500 kHz, DC에서 5 MHz(추후 500 kHz ~ 5 MHz로 업그레이드 가능)를 커버하는 2가지 버전이 있습니다.
MFLI은 정교하게 개발되었던 아날로그와 고속 디지털 처리를 가능하게 하는 FPGA 보드를 내포한 디지털 프론트 엔드를 가지고 있습니다.
그리고, 뛰어난 LabOne®툴셋에 의해서, MFLI은 최고의 기능을 가지게 되었습니다.
임베디드 데이터와 웹 서버를 통해서, 웹 브라우저를 실행중인 디바이스에 간단하게 접속할 수 있습니다
MFLI 주요 특징
- DC - 500 kHz / 5 MHz, 60 MSa/s, 16 bit
- Current and differential voltage inputs
- LabOne toolset: Scope, Sweeper, Spectrum Analyzer, etc.
- Plug & Play with embedded LabOne® Web Server
- USB 2.0 and 1 GbE high-speed connections
- AC line and DC supply (battery) operation
- Upgradeable in the field with options
- Optical chopper applications
- Pulsed laser applications (e.g. high power lasers)
- Materials research
- Quantum- and nano-electronics
- Scanning tunneling microscopy
- Low temperature physics
- Four-terminal sensing
- Seismic measurements
MFLI Q & A
- Are there different hardware configurations available?
- No, all options are firmware and software based and can be upgraded at any time later in the field.
- Do I need a PC to run the instrument?
- The MFLI has an embedded web server and can be connected to a local network where it can be accessed from any web browser by opening the address "http://mf-dev3XXX".
- How does the MFLI compare to HF2LI and UHFLI with respect to key features and specification?
- Please see the comparison chart.
- What are the key features of the MFLI Scope?
- The key features of MFLI oscilloscope are
- Single channel, up to 16 kSa per shot, 16 bit resolution (24 bit with BW limit)
- Sampling rates from 1.8 kSa/s to 60 MSa/s, up to 8.9 s acquisition time
- Fast Fourier Transform (FFT) of acquired scope shots with up to 30 MHz span (limited by 10 MHz input bandwidth (-3 dB))
- 6 signal sources including signal inputs and trigger inputs, up to 6 trigger sources and 2 trigger methods
- Independent hold-off, hysteresis, pre-trigger and trigger level settings
- Support for input scaling and arbitrary input units
See also LabOne Toolset and Scope.
- What are the key features of the MFLI Spectrum Analyzer?
- The key features of MFLI spectrum analyzer are
- Up to 58 kHz span, noise floor at 2.5 nV/√Hz, up to 8 kSa
- Choice of 4 different FFT window functions
- FFT input parameters: X+iY, R, Θ, f, (dΘ/dt)/(2π)
See also LabOne Toolset and Spectrum Analyzer.
- What are the key features of the MFLI Sweeper?
- The key features of MFLI Sweeper are
- Full-featured parametric sweep tool for signal output frequency, signal output amplitude, signal output offset, signal output phase, offset voltage auxiliary output
- Recording parameters: demodulator data (X, Y, R, Θ), oscillator frequency, auxiliary inputs, etc.
- Application modes: Parameter sweep, Noise amplitude measurement, Frequency response analyzer, 3-Omega-Sweep
- Other features: logarithmic sweeps, automatic bandwidth adjustment, persistent display of previous scans, phase unwrap, etc.
See also LabOne Toolset and Sweeper.
MFLI 기능 다이어그램
The front panel of the MFLI features 1 current signal input, 1 differential voltage input, 1 differential signal output, 2 auxiliary inputs that can work as reference inputs, and 4 auxiliary outputs. Both signal inputs and outputs can be operated in single-ended and differential mode for experiments that require extra immunity from noise disturbances. The signal ground can be referenced either to the instrument ground or the BNC shield of the signal inputs.
Voltage measurements and current measurements are both supported by the base instrument, but the simultaneous measurement of current and voltage requires the MF-MD Multi-demodulator option. The analog front-end features variable input impedance as well as AC/DC coupling selection and the high-frequency analog to digital sampling provides a large over sampling factor, ensuring superior lock-in performance and high signal fidelity for the Scope.
The results of the lock-in measurement, i.e. X, Y, R and Θ for each of the demodulators, can be utilized in the following ways:
- Analog output to any of the 4 auxiliary outputs on the front panel. Individual scaling and offsets can be set for each signal and the 612 kSa/s sampling rate ensures that all demodulated signal components are reliably available on the physical connectors. The signal bandwidth is the same for all signals and can be as high as 200 kHz.
- Transferred to the host PC over either USB 2.0 or 1 GbE and displayed on the LabOne® user interface, where they can be analyzed with one of several LabOne tools, or easily stored locally using just a few mouse clicks.
- Stored locally on a USB mass storage device plugged in into either of the two USB connectors.
Back panel interface
The back panel offers more BNC connectors comprising 2 trigger inputs, 2 trigger outputs and 1 input and 1 output for 10 MHz clock synchronization. Moreover, a SCSI connector offers access to all DIO channels. The units can be operated with standard 90 - 240 V mains supply or by an external 12 V DC power supply, e.g. from an external battery pack, in order to break up ground loops.