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778692-02 Datasheet(PDF) 1 Page - National Instruments Corporation |
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778692-02 Datasheet(HTML) 1 Page - National Instruments Corporation |
1 / 4 page 100 MS/s, 16-Bit Arbitrary Waveform Generator Overview The NI 5421 is a 100 MS/s arbitrary waveform generator (AWG) featuring 16-bit resolution and up to 256 MB of onboard memory in a compact, 1 slot 3U PXI module or PCI board. With this combination of high resolution and deep memory, you can generate long, precise aperiodic waveforms, ideal for a range of applications in communications, consumer electronics, scientific research, automotive, and military/aerospace. Because the NI 5421 uses the PCI bus, waveforms can be downloaded up to 280 times faster than with GPIB-based AWGs. With the NI Synchronization and Memory Core (SMC) architecture of the NI 5421, you can create stimulus/response systems with digitizers and digital waveform generator/analyzers or synchronize multiple arbitrary waveform generators to form a phase-coherent multichannel system. Analog Output Performance Because of its 100 MS/s, 16-bit digital-to-analog converter (DAC) and clean back-end analog design, the NI 5421 has a close-in spurious- free dynamic range (SFDR) of 91 dBc and an average noise density of -148 dBm/Hz. These features make it ideal for even the most stringent frequency-domain applications common in communications. Depending on your signal and application needs, you can select from 2x, 4x, or 8x interpolation for an effective sampling rate up to 400 MS/s. For demanding time-domain applications, the NI 5421 has <5% pulse aberration and <1.0 psrms jitter at the analog output. The analog output path features a 43 MHz 7-pole elliptical analog filter to suppress undesired high-frequency signal images. You can also choose from 50 or 75 Ω output impedance and vary the output attenuation with three digits of accuracy. In addition, you can bypass the output gain and attenuation by using the direct path. The direct path excels at intermediate frequency (IF) applications with passband flatness of ±0.25 dB from 0 to 40 MHz. Shared Waveform and Instruction Memory Because the NI 5421 is built on the SMC architecture, it uses the same physical memory for both waveform data and sequencing instructions. Traditionally, the instruction memory of AWGs is physically separate from the waveform data memory and is typically only a few kB. The limited instruction memory of traditional AWGs severely limits the maximum number of waveforms that can be sequenced as well as the overall flexibility of the AWG. The NI 5421 onboard memory of 8, 32, or 256 MB stores data and instructions together, giving you the flexibility to use as much space as you need for sequencing instructions. With shared memory, you can use the memory space for very long sequences with small waveforms, short sequences with very large waveforms, or a balance in between. •1 analog output channel • 16-bit resolution, 100 MS/s sampling rate • 400 MS/s maximum effective sampling rate with interpolation • 43 MHz analog bandwidth • 12 Vp-p into 50 Ω load • 91 dBc close-in SFDR at 10 MHz • -67 dBc THD at 10 MHz • -148 dBm/Hz average noise density •8, 32, or 256 MB of onboard memory •Optional 16-bit LVDS digital pattern output Operating Systems •Windows 2000/NT/XP Recommended Software • LabVIEW™ • LabWindows™/CVI™ •Measurement Studio™ •Analog Waveform Editor •Digital Waveform Editor Other Compatible Software •Visual Basic •Visual C/C++ Application Software •Analog Waveform Editor (32 and 256 MB models only) Driver Software (included) • NI-FGEN Calibration Certificate Included NI 5421 NEW Figure 1. Power Spectrum of a 10 MHz Sine Wave Output from the PXI-5421 |
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