100 MHz, 100 MS/s, 14-Bit Digitizer
NI 5122
• 2 channels simultaneously sampled
at 14-bit resolution
• 100 MS/s real-time and 2.0 GS/s
random interleaved sampling
• 100 MHz bandwidth
• 50
Ω
or 1 MΩ input impedance,
software-selectable
• 200 mV to 20 V input range
• 75 dBc SFDR and 62 dB SINAD
• Memory options from 8 to 512 MB
per channel
• Edge, window, hysteresis, video,
and digital triggering with
100 ps timestamping
Operating Systems
• Windows Vista/XP/2000
Recommended Software
• LabVIEW
• LabWindows
™
/CVI
• Measurement Studio for Visual Studio
Other Compatible Software
• Visual Basic
• C/C++
• .NET
Application Software (included)
• Spectral Measurements Toolkit
(32 and 256 MB/channel models only)
Models
• NI PCI-5122
• NI PXI-5122
• NI PXIe-5122
Driver Software (included)
• NI-SCOPE
Overview
National Instruments 5122 high-speed digitizers feature two 100 MS/s
simultaneously sampled input channels with 14-bit resolution, 100 MHz
bandwidth, and up to 512 MB of memory per channel in a compact,
3U PXI Express, PXI, or PCI device. With its high sampling rate and
low-distortion front end, an NI 5122 is ideal for a wide range of appli-
cations in automotive, communications, scientific research, military/
aerospace, and consumer electronics. Using the National Instruments
Synchronization and Memory Core (SMC) architecture, you can easily
synchronize to other analog and digital instruments to develop
high-channel-count or mixed-signal test systems.
Figure 1. Graph of Dynamic Performance (FFT)
Analog Input Performance
NI 5122 digitizers use 14-bit analog-to-digital converters (ADCs),
low-noise variable-gain amplifiers, and a low-jitter 100 MHz timebase
to deliver a 75 dBc spurious-free dynamic range and a 62 dB signal-to-
noise ratio. The 14-bit data converters have 64 times the resolution
of traditional 8-bit instruments, providing more accurate time- and
frequency-domain measurements.
Software-selectable 50
Ω
or 1 MΩ input impedance, input ranges
from 200 mV
pp
to 20 V
pp
, seven trigger modes, and antialias and noise
filters make NI 5122 digitizers versatile enough to meet the most
demanding application requirements. The programmable DC offset
feature maximizes the use of the entire 14 bits of vertical range.
Onboard self-calibration also ensures measurement stability over
the entire operating temperature range of 0 to 55 °C.
Deep Onboard Acquisition Memory
An NI 5122, based on the SMC architecture, comes with high-speed
memory options from 8 to 512 MB per channel (4 to 256 million 14-bit
samples per channel). An NI 5122 can acquire more than 1 million
triggered waveforms without software intervention in multiple-record
acquisition mode for applications such as RADAR, ultrasound, and event
detection, which require short trigger rearm times. In addition, you can
timestamp each triggered event with 100 ps resolution in both single-
shot and multiple-record acquisition modes. An NI 5122 also can stream
data continuously from onboard memory to host memory for longer
acquisitions and streaming to disk.
NI [ NATIONAL INSTRUMENTS CORPORATION ]
