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779967-03 PDF预览

779967-03

更新时间: 2022-09-25 19:38:30
品牌 Logo 应用领域
美国国家仪器公司 - NI /
页数 文件大小 规格书
5页 441K
描述
100 MHz, 100 MS/s, 14-Bit Digitizer

779967-03 数据手册

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100 MHz, 100 MS/s, 14-Bit Digitizer  
NI 5122  
• 2 channels simultaneously sampled  
at 14-bit resolution  
Operating Systems  
• Windows Vista/XP/2000  
• 100 MS/s real-time and 2.0 GS/s  
random interleaved sampling  
• 100 MHz bandwidth  
• 50 or 1 Minput impedance,  
software-selectable  
Recommended Software  
• LabVIEW  
• LabWindows/CVI  
• Measurement Studio for Visual Studio  
• 200 mV to 20 V input range  
• 75 dBc SFDR and 62 dB SINAD  
• Memory options from 8 to 512 MB  
per channel  
• Edge, window, hysteresis, video,  
and digital triggering with  
100 ps timestamping  
Other Compatible Software  
• Visual Basic  
• C/C++  
• .NET  
Application Software (included)  
• Spectral Measurements Toolkit  
(32 and 256 MB/channel models only)  
Models  
Driver Software (included)  
• NI-SCOPE  
• NI PCI-5122  
• NI PXI-5122  
• NI PXIe-5122  
Overview  
National Instruments 5122 high-speed digitizers feature two 100 MS/s  
simultaneously sampled input channels with 14-bit resolution, 100 MHz  
bandwidth, and up to 512 MB of memory per channel in a compact,  
3U PXI Express, PXI, or PCI device. With its high sampling rate and  
low-distortion front end, an NI 5122 is ideal for a wide range of appli-  
cations in automotive, communications, scientific research, military/  
aerospace, and consumer electronics. Using the National Instruments  
Synchronization and Memory Core (SMC) architecture, you can easily  
synchronize to other analog and digital instruments to develop  
high-channel-count or mixed-signal test systems.  
Figure 1. Graph of Dynamic Performance (FFT)  
Analog Input Performance  
Deep Onboard Acquisition Memory  
NI 5122 digitizers use 14-bit analog-to-digital converters (ADCs),  
low-noise variable-gain amplifiers, and a low-jitter 100 MHz timebase  
to deliver a 75 dBc spurious-free dynamic range and a 62 dB signal-to-  
noise ratio. The 14-bit data converters have 64 times the resolution  
of traditional 8-bit instruments, providing more accurate time- and  
frequency-domain measurements.  
An NI 5122, based on the SMC architecture, comes with high-speed  
memory options from 8 to 512 MB per channel (4 to 256 million 14-bit  
samples per channel). An NI 5122 can acquire more than 1 million  
triggered waveforms without software intervention in multiple-record  
acquisition mode for applications such as RADAR, ultrasound, and event  
detection, which require short trigger rearm times. In addition, you can  
timestamp each triggered event with 100 ps resolution in both single-  
shot and multiple-record acquisition modes. An NI 5122 also can stream  
data continuously from onboard memory to host memory for longer  
acquisitions and streaming to disk.  
Software-selectable 50 or 1 Minput impedance, input ranges  
from 200 mVpp to 20 Vpp, seven trigger modes, and antialias and noise  
filters make NI 5122 digitizers versatile enough to meet the most  
demanding application requirements. The programmable DC offset  
feature maximizes the use of the entire 14 bits of vertical range.  
Onboard self-calibration also ensures measurement stability over  
the entire operating temperature range of 0 to 55 °C.  

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