PXI-5441 Datasheet, PDF (4/7 Pages) National Instruments Corporation – 100 MS/s, 16-bit Arbitrary Waveform Generator with Onboard Signal Processing

100 MS/s, 16-bit Arbitrary Waveform
Generator with Onboard Signal Processing
The NI 5441’s sample clock has three modes: Divide-by-N, High-
Resolution, and External. The direct digital synthesis (DDS) based
high-resolution sample clock has a sample rate resolution of
1.06 µHz. This offers you exceptional stability and sampling rate
flexibility. The NI 5441 can also import its sample clock from the
CLK IN, PXI star trigger and PXI trigger bus. In addition, you can
phase lock the NI 5441’s oscillator to an external reference or the
PXI 10 MHz reference clock.
Driver Software
Accurate, high-throughput hardware improves the performance of
a measurement system, but easy-to-use, reliable software reduces
your development time and ongoing support costs. NI-FGEN, the
driver software for the NI 5441, is the world’s most advanced and
thoroughly tested arbitrary waveform generator software
and features:
• Intuitive application programming interface (API) – In LabVIEW,
LabWindows/CVI, VisualBasic and Visual C/C++, NI-FGEN’s API
is engineered to use the least number of function’s possible while
also maintaining flexibility. Each driver function has thorough
online searchable documentation. The NI-FGEN Quick Reference
Guide further simplifies programming by providing an overview
of each driver function’s LabVIEW icon, function name,
parameters, and data types.
• LabVIEW Express VIs – For generating an arbitrary repetitive
signal, the LabVIEW Express VI is a configuration driven way
to program the NI 5441 without accessing the underlying
NI-FGEN functions.
• Function generator mode – Using the OSP’s numerically
controlled oscillator, the PXI-5441 can behave as an arbitrary
function generator with 355 nHz frequency resolution. Using
function generator mode, you can generate phase continuous
frequency sweeps and hops.
Modulation Toolkit for LabVIEW¹
The Modulation Toolkit for LabVIEW provides functions for
signal generation, analysis, and visualization of custom and
standard analog and digital modulation. With the Modulation
Toolkit, you can also develop and analyze custom modulation
formats and generate these with the PXI-5441. Some of the
standard measurement functions include EVM (error vector
magnitude), MER (modulation error ratio), and ρ (rho). Functions
are also available for injecting impairments including
IQ Gain Imbalance, Quadrature Skew, and AWGN (additive white
Gaussian noise). Visualization functions include trellis,
constellation, and 2D- and 3D-eye diagrams. This hardware and
software combination gives you access to customizable functionality
not available in traditional instrumentation.
Modulation/Demodulation
Visualization and Analysis
• 4, 8, 16, 32, 64, 128, 256-QAM • Trellis diagrams
• 2, 4, 8, 16-FSK
• Constellation plot
• MSK and GMSK
• 2D- and 3D-eye diagrams
• 8, 16, 64-PSK
• BPSK, QPSK, OQPSK, DQPSK,
Π_{–4 DQPSK}
Modulation Impairments
• Multitone
• AM, FM, PM
• DC offset
• Fading profile
Modulation Analysis Functions • Frequency offset
• ρ (rho)
• Quadrature skew
• DC offset
• IQ gain imbalance
• Phase error
•Additive White Gaussian
• Quadrature skew
Noise (AWGN)
• IQ gain imbalance
• Bit error rate (BER)
• Frequency deviation
• Burst timing measurements
• Modulation error ratio (MER)
• Error vector magnitude (EVM)
1_{A Modulation Toolkit datasheet is available separately.}
• Soft front panel – For quick non-programmatic use of the
NI 5441, the soft front panel supports arbitrary waveform and
standard waveform generation.
• Example programs – NI-FGEN provides 23 programming
examples for LabVIEW, LabWindows/CVI, VisualC++ 6.0 and
.Net, and VisualBasic 6.0 so you don’t have to start from scratch.
• LabVIEW Real-Time Support – For remotely deployed
autonomous measurement systems or applications requiring the
highest possible reliability, NI-FGEN supports LabVIEW’s
Real-Time module.
Analog Waveform Editor¹
The NI Analog Waveform Editor is an interactive software tool for
creating and editing analog waveforms. In the editor, each waveform
is comprised of different segments, where each segment is comprised
of a collection of “primitives”. You can create a new waveform
segment by selecting from a library of over 20 waveform “primitives”
(Table 1), by entering a mathematical expression, or importing data
from a file. Waveform primitives can then be combined point-by-
point using addition, multiplication, or division to create more
complex segments (Figure 6).
1_{An Analog Waveform Editor datasheet is available separately.}
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