100 MS/s, 16-Bit Arbitrary Waveform Generator
with Onboard Signal Processing
NI PXIe-5442 NEW!
• Baseband and intermediate
frequency generation
Recommended Software
• LabVIEW
• LabWindows™/CVI
• Interpolation and pulse-shaping filters
• Carrier frequencies up to 43 MHz with
355 nHz resolution
• 16-bit resolution, 100 MS/s
sampling rate
• LabVIEW SignalExpress
• Measurement Studio
• Digital Filter Design Toolkit
Included Software
• NI-FGEN driver
• 400 MS/s effective sampling rate
with digital-to-analog converter
(DAC) interpolation
• 32, 256, and 512 MB of onboard memory
• Multimodule synchronization with
<20 psrms skew
• LabVIEW Express VIs
• NI Modulation Toolkit
• NI Analog Waveform Editor
• FGEN Soft Front Panel
• LabVIEW Real-Time driver
Operating Systems
• Windows Vista/XP/2000/NT
Calibration
• Gain and offset self-calibration
• 2-year external calibration cycle
of the instrument. This enables the generator to continuously output
waveforms at 100 MS/s (200 MB/s) from either host memory or other
high-end storage solutions such as RAID hard drive arrays. Applications
that benefit from this capability include RF/IF data streaming in signal
intelligence, data record and playback, and scientific applications.
Overview
The National Instruments PXIe-5442 is a 100 MS/s arbitrary waveform
generator with onboard signal processing (OSP). OSP functions include
pulse shaping and interpolation filters, gain and offset control, a
numerically controlled oscillator (NCO), and IQ mixing for quadrature
digital upconversion. With 16-bit resolution and -91 dBc close-in
spurious-free dynamic range (SFDR), the NI PXIe-5442 is ideal for
baseband I/Q and intermediate frequency (IF) generation. Common
applications include prototyping, validation, and testing of semiconductor
components and communications, radar, and electronic warfare systems.
The NI PXIe-5442 is also a full-featured arbitrary waveform generator
capable of generating general-purpose test signals at a maximum output
range of 2 Vpk-pk into a 50 Ω load.
Onboard Signal Processing
(Digital Upconversion)
Onboard signal processing (OSP) significantly extends waveform
playback time and shortens waveform download times (see Figure 1).
A field-programmable gate array (FPGA) on the NI PXIe-5442 implements
the OSP functionality, which delivers several signal processing functions
used to perform digital upconversion to an intermediate frequency. The
signal processing functions include the following.
With its National Instruments Synchronization and Memory Core
(SMC) architecture, the NI PXIe-5442 aides in the integration of mixed-
signal test systems by enabling synchronization with other instruments
such as digitizers, digital waveform generator/analyzers, and other
signal generators. In fact, you can synchronize multiple arbitrary
waveform generators to form a phase-coherent multichannel
generator for generating multiple I/Q signal pairs common in
applications such as MIMO (multiple input, multiple output) or
beamforming antenna schemes.
Onboard Signal Processing
Pre-Filter
Gain I
Pre-Filter
Offset I
Filtering and
Interpolation
X
Waveform
Memory
Output
Engine
IQ
Rate
Digital
Gain
DAC
Interpolation
–
DAC
Pre-Filter
Gain Q
Pre-Filter
Offset Q
Filtering and
Interpolation
X
Iφ
Qφ
NCO
IQ Rate
Rate Change
(OSP Interpolation)
Sample Rate
Rate Change Effective
Sample Rate
Figure 1. Onboard signal processing uses the NI PXIe-5442 module’s FPGA to perform
inline processing of the waveform data stored in the module’s memory.
• Independent I and Q prefilter gain and offset – Adds gain and
offset imbalance impairments and I and Q prefilter gain. You can
adjust the offset before or during the generation of an output signal.
High-Speed Data Streaming
As a PXI Express instrument, the NI PXIe-5442 makes use of the
PCI Express bus to continuously stream data from the host controller
at rates up to 540 MB/s, much higher than the maximum output rate
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