24-Bit Flexible-Resolution Digitizers
NI 5922 NEW!
• From 24 bits up to 500 kS/s to 16 bits at 15 MS/s • 2 simultaneously sampled channels • ±1 and ±5 V input ranges • -114 dBc SFDR • -120 dBFS rms noise • -170 dBFS/Hz noise density • Deep onboard memory up to 256 MB/channel • 50 Ω or 1 MΩ software-selectable input impedance • Integrated antialias protection for all sampling rates
Operating Systems
• Windows 2000/XP • LabVIEW Real-Time • Linux®
Recommended Software
• LabVIEW • LabVIEW Toolkits • Spectral Measurements Toolkit • Modulation Toolkit • Sound and Vibration Toolkit • LabWindows™/CVI • Measurement Studio • SignalExpress
Calibration
• Linearity, gain, offset, and input bias current self-calibration • 2-year external calibration interval
Driver Software (included)
• NI-SCOPE • Scope Soft Front Panel
Overview
National Instruments 5922 flexibleresolution digitizers feature two simultaneously sampled channels, with variable resolution. NI 5922 digitizers can trade sampling rate for resolution to sample anywhere from 24 bits at rates less than 500 kS/s to 16 bits at 15 MS/s. By combining an NI 5922 with software such as LabVIEW, you can create numerous different types of instruments, such as DC and rms voltmeters, audio analyzers, frequency counters, spectrum analyzers, IF digitizers, or I/Q modulation analyzers. NI 5922 digitizers have low noise as well as low distortion, which is possible because of the NI Flex II ADC.
Applications Communications xDSL Wireless communications Baseband I & Q Biomedical and Scientific Research Ultrasonic medical imaging Mass spectrometry Particle physics Aerospace/Defense RADAR, SONAR, and LIDAR Satellite Signal intelligence Consumer Electronics Performance Audio Test
• Stream data continuously from onboard memory to host memory or disk Timing and Synchronization Because NI 5922 digitizers are built on the SMC architecture, you can synchronize two or more digitizers for high-channel-count applications, and build mixed-signal test systems using SMC-based digitizers, arbitrary waveform generators, and digital waveform generator/analyzers using TClk technology. Software • IVI-compliant NI-SCOPE driver for LabVIEW, LabWindows/CVI, and Microsoft C++ and Visual Basic with more than 50 built-in measurements • Scope Soft Front Panel for interactive control • NI Spectral Measurements Toolkit for sophisticated frequencydomain measurements in communications, signal intelligence, and avionics applications
Ordering Information
NI PCI-5922 ........................................................................779659-OM1 NI PXI-5922 ........................................................................779153-0M1
1M
(memory per channel): 1 (8 MB), 2 (32 MB), 3 (256 MB)
Figure 1. Frequency versus Resolution of NI 5922 Flexible-Resolution Digitizers
Includes NI-SCOPE and Scope Soft Front Panel. The 32 and 256 MB/channel models also include the Spectral Measurements Toolkit.
Deep Onboard Memory • 8, 32, or 256 MB/channel • Capture more than 400,000 triggered waveforms with multirecord acquisition
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For complete product specifications, pricing, and accessory information, call 800 813 3693 (U.S.) or go to ni.com/digitizers.
24-Bit Flexible-Resolution Digitizers
Specifications
These specifications are valid for 0 to 55 °C, unless otherwise stated.
Spectral Characteristics (typical) Dynamic Performance (-1 dBFS input signal)
Input Frequency 10 kHz 100 kHz 1 MHz SFDR (dBc) -114 -110 -96 10 Vpp (±5 V) Input Range THD (dBc) -112 -108 -94 SINAD (dB) – 105 89 SNR (dB) – 108 91
Acquisition System
Number of channels......................................... 2 simultaneously sampled single-ended or unbalanced differential or 1 differential channel Vertical resolution ............................................ 16 to 24 bits Sampling Rate 50 to 500 kS/s 1 MS/s 5 MS/s 10 MS/s 15 MS/s Alias-free bandwidth ....................................... Onboard sample memory ................................. Pretrigger and posttrigger data points ............ Input impedance............................................... Full-scale input range....................................... Resolution (bits) 24 22 20 18 16 0.4 x sampling rate 8, 32, or 256 MB per channel (2, 8, or 64 million samples) 0 to 100% of full record length 50 Ω and 1 MΩ || 40 pF, software-selectable 2 Vpp (±1 V) and 10 Vpp (±5 V)
Note: Sampling rate is 1 MS/s for 100 kHz input and 10 MS/s for 1 MHz input. Input Frequency 10 kHz 100 kHz 1 MHz SFDR (dBc) -109 -103 -92 2 Vpp (±1 V) Input Range THD (dBc) -107 -101 -90 SINAD (dB) – 99 87 SNR (dB) – 104 90
Rms Noise
Sample Rate 50 kS/s 100 kS/s 1 MS/s 5 MS/s 10 MS/s 15 MS/s 10 Vpp (±5 V) Input Range (dBFS) (µVrms) -120 3.4 -118 4.3 -108 13 -101 31 -91 92 -79 401 2 Vpp (±1 V) Input Range (dBFS) (µVrms) -117 1.0 -115 1.2 -104 4.2 -98 8.7 -91 20 -79 80
Multiple Record Acquisition (0 to 100% pretrigger and posttrigger data) Memory/Channel Maximum Number of Records on Board 8 MB 13,107 32 MB 100,0001 256 MB 100,0001
1Infinite
in streaming configuration.
Maximum input overload ................................. 50 Ω: 7 Vrms with peaks ≤10 V, 1 MΩ: peaks ≤42 V Input coupling................................................... AC, DC, GND AC coupling cutoff frequency (-3 dB)............... 90 Hz
Phase noise density (5 MHz input) ..................
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