PXI-5670 Datasheet, PDF (2/5 Pages) National Instruments Corporation – 250 kHz to 2.7 GHz/8, 32 or 256 MB memory

2.7 GHz RF Vector Signal Generator
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-5670. 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 Toolkit Functions^*
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,
Modulation Impairments
DQPSK, π/4DQPSK
• Multitone
• AM, FM, PM
• DC offset
Modulation Analysis
Functions
• Fading profile
• Frequency offset
• Quadrature skew
• ρ (rho)
• IQ gain imbalance
• DC offset
• Additive white Gaussian
• Phase error
noise (AWGN)
• Quadrature skew
• IQ gain imbalance
• Bit error rate (BER)
• Frequency deviation
• Burst timing measurements
• Modulation error ratio (MER)
• Error vector magnitude (EVM)
*_{A modulation toolkit datasheet is available separately.}
Figure 3. RF test system – PXI-5670 and PXI-5660
Memory
The deep memory of up to 256 MB in the PXI-5670 offers extended
playback time for complex modulated signals. With this deep memory,
you can build and output longer and more complex waveforms with a
duration of up to 1.28 seconds to address research and testing needs
for simulation of signal transmission in real-world conditions.
Option
8 MB
32 MB
256 MB
Playback Time
40 ms
160 ms
1.28 s
* _{Frequency resolution does not refer to accuracy}
Frequency Resolution^*
25 Hz
6.2 Hz
0.6 Hz
Superior Flexibility
Providing customers with a flexible platform is necessary to meet the
needs of today’s complex, rapidly evolving systems. The PXI-5670
consists of two components – the NI PXI-5610 2.7 GHz RF
upconverter and the NI PXI-5421 arbitrary waveform generator, a
high-spectral-purity baseband signal generator. The PXI-5610 and
the PXI-5421 work together to provide vector signal generation from
250 kHz to 2.7 GHz. Because of the flexible hardware and software,
and with access to low-level driver functionality, the PXI-5610 and
the PXI-5421 can also be used independently for RF upconversion
and arbitrary waveform sequencing. For advanced applications,
combine additional modular instruments in the same PXI chassis
with the PXI-5670 and take advantage of the tight synchronization
between PXI modules. For example, combine the PXI-5660
RF Vector Signal Analyzer with the PXI-5670 to build an
RF communications test system with complete modulation and
demodulation capabilities.
Figure 2. A 3D IQ plot created by the Modulation Toolkit visually
separates the I and Q components for this PSK modulated signal.
Calibration
The PXI-5610 and the PXI-5421 are calibrated separately by
National Instruments and are shipped with NIST-traceable and
ISO-9002-certified calibration certificates. Temperature variations
are calibrated and corrected during normal operation resulting in
very high stability and repeatability.
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