NIPXI-5671

2.7 GHz RF Vector Signal Generator NI PXI-5671 • 250 kHz to 2.7 GHz • 16-bit resolution, 100 MS/s arbitrary waveform generation (400 MS/s interpolated) • 32, 256, or 512 MB memory • 20 MHz real-time bandwidth • High-stability time base (10 MHz OCXO) • ±20 ppb frequency stability • ±50 ppb frequency accuracy •-145 dBm to +10 dBm output power NEW Operating Systems •Windows 2000/XP Recommended Software • LabVIEW • LabWindows/CVI Application Software (included) • Modulation Toolkit for LabVIEW Driver Software (included) • NI-RFSG Overview The National Instruments PXI-5671 is a 2.7 GHz RF vector signal generator module with quadrature digital upconversion. Digital upconversion provides a more efficient means of waveform generation resulting in a tremendous reduction in download and signal generation time. The NI PXI-5671 provides 16-bit resolution arbitrary waveform generation at 100 MS/s (400 MS/s interpolated), up to 512 MB of memory, and 20 MHz real-time bandwidth. The PXI-5671 can generate custom and standard modulation formats such as AM, FM, PM, ASK, FSK, MSK, GMSK, PSK, QPSK, PAM, and QAM. The Modulation Toolkit for LabVIEW accompanies the PXI-5671, providing functions and tools for signal generation, analysis, visualization, and processing of custom and standard digital and analog modulation formats. The combined functionality of the PXI-5671 and the Modulation Toolkit deliver a highly flexible and powerful solution for scientific research, consumer electronics, communications, aerospace/defense, and semiconductor test applications as well as for emerging areas including software-defined radio, radio-frequency identification (RFID), and wireless sensor networks. Figure 1. Modulation Toolkit for LabVIEW Displaying /4 DQPSK π specifications make it useful for a range of automation applications. A sophisticated calibration scheme is implemented in the PXI-5671 to ensure power level accuracy over varying temperatures from 0 to 55 °C. This feature is important to many applications, especially in manufacturing environments where the stable operation over varying temperature ranges is critical. Software Hardware The PXI-5671 provides vector signal generation from 250 kHz to 2.7 GHz over a wide range of signal levels from -145 dBm to +10 dBm in a compact, 3 slot 3U module. It follows industry-standard plug and play specifications for the PXI bus and can be seamlessly integrated with compliant systems. The PXI-5671 features an onboard ultrahigh-stability ovencontrolled crystal oscillator (OCXO), which provides frequency stability of ±20 ppb and frequency accuracy of ±50 ppb. These The PXI-5671 is shipped with the NI-RFSG instrument driver and the Modulation Toolkit for LabVIEW. NI-RFSG is a fully functional instrument driver, compatible with a variety of application software environments such as NI LabVIEW, LabWindows/CVI, and C. NI-RFSG features easy-to-use functions for configuring the timing and synchronization, CW tone, and arbitrary waveform generation capabilities of the PXI-5671. Also included are a number of interactive, instructional examples and interactive online help that can help jumpstart your application test development. 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-5671. 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. NI Modulation Toolkit Functions1 Modulation/Demodulation • AM, FM, PM • ASK, FSK, PSK • MSK, GMSK • PAM, QAM • BPSK, QPSK, OQPSK, DQPSK, /4DQPSK Figure 3. RF test system – PXI-5671 and PXI-5660 Visualization and Analysis • Trellis diagrams • Constellation plot • 2D and 3D eye diagrams Superior Flexibility Providing customers with a flexible platform is necessary to meet the needs of today’s complex, rapidly evolving systems. The PXI-5671 consists of two components – the NI PXI-5610 2.7 GHz RF upconverter and the NI PXI-5441 arbitrary waveform generator, a high-spectral-purity baseband signal generator with onboard signal processing. The PXI-5610 and the PXI-5441 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-5441 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-5671 and take advantage of the tight synchronization between PXI modules. For example, combine the PXI-5660 RF Vector Signal Analyzer with the PXI-5671 to build an RF communications test system with complete modulation and demodulation capabilities. π Modulation Impairments • Multitone • DC offset • Fading profile • Frequency offset • Quadrature skew • IQ gain imbalance • Additive white Gaussian noise (AWGN) • Phase noise • ρ (rho) • DC offset • Phase error • Quadrature skew • IQ gain imbalance • Bit error rate (BER) • Frequency deviation • Burst timing measurements • Modulation error ratio (MER) • Error vector magnitude (EVM) 1A Modulation Analysis Functions Calibration The PXI-5610 and the PXI-5441 are calibrated separately by National Instruments 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. Modulation Toolkit datasheet is available separately. Figure 2. A 3D IQ plot created by the Modulation Toolkit visually separates the I and Q components for this PSK modulated signal. 2 National Instruments • Tel: (800) 813 3693 • info@ni.com • ni.com 2.7 GHz RF Vector Signal Generator Specifications Valid over specified Operating Environment (0 to 55 °C) unless otherwise stated. General Channels .......................................................... 1 RF, 1 IF Frequency Characteristics Frequency range ............................................... 250 kHz to 2.7 GHz Frequency minimum (performance below 250 kHz not guaranteed) ........................... 9 kHz Real-time bandwidth (Digital vector modulation bandwidth) ............................. 20 MHz Locking range ................................................... 5 Hz minimum Warm-up time (typical) .................................... 30 minutes Frequency resolution (dependent on NI PXI-5441 memory) 32 MB ........................................................ 355 nHz >256 MB .................................................... 355 nHz Offset Frequency 100 Hz 1 kHz 10 kHz 100 kHz Real-time bandwidth >10 MHz Carrier Frequency = 1 GHz –72 dBc/Hz maximum –75 dBc/Hz maximum –98 dBc/Hz maximum –116 dBc/Hz maximum Carrier Frequency = 2 GHz –70 dBc/Hz maximum –72 dBc/Hz maximum –96 dBc/Hz maximum –116 dBc/Hz maximum Residual FM ..................................................... 4.5 Hz rms maximum (continuous wave, 300 Hz to 3 kHz integration bandwidth) Spurious Responses Second harmonic (>10 MHz) 0 to 55 °C .......... -40 dBc maximum Output third-order distortion (IMD) (two -3 dBm tones, >200 kHz apart) ......... -75 dBc typical Residual spurious response (no input signal, 0 dB attenuation/maximum power level, excluding LO feedthrough) ...