Wideband FFT Spectrometer
1 GHz analysis bandwidth, continuous real-time measurement, 16k channels
DFS-2000 Datasheet
DSPlogic Inside
DSPlogic Innovation in a Keysight Quality Instrument
DSPlogic | DFS-2000 – Datasheet
May, 2016
Overview
Introduction
Analysis Features
Input frequency range
FFT Length
Number of Channels
Channel spacing
Accumulation time
Polyphase FFT Filter
The DFS-2000 Wideband FFT Spectrometer measures the
frequency components of any input signal from DC to 1
GHz. It uses a high-sensitivity algorithm to simultaneously
measure 16,384 channels at a frequency spacing of 61 kHz.
Unlike a spectrum analyzer that sweeps the measurement
frequency over time (allowing transient signals to be
overlooked), the wideband spectrometer continuously
measures the input signal with no time or frequency gaps.
DC – 1 GHz
32k
16,384
61.035 kHz
Greater than 1 minute
Analysis window greater
than 60 microseconds
Features
Applications
 Choice of algorithm:
o Fast Fourier Transform (FFT), 32k-point
o Polyphase filter bank (4-Tap)
 On-board spectral power accumulation over 1 minute
 Select floating-point hardware processing improves
accuracy and dynamic range
 Spectral Analysis display and data collection GUI
 Software API to support custom applications
 Form Factor: PCI Express 2.0, Single x8 slot
 Dual-use as 12-bit, 2 GSPS high-performance digitizer
 600 MHz filter can be enabled to reduce aliasing
The DFS-2000 spectrometer can process data from a wide
variety of sensors such as radio telescopes, RF subsystems,
antennae, or millimeter-wave receivers for applications
including:





Atmospheric Remote Sensing
Millimeter-Wave Spectroscopy
Radio Astronomy and Physics
RF Spectral Monitoring
RF Compliance, Spurious Emission Testing
Description
SpectroCore
Sensor Input
1 GHz BW
2 Gsamples/sec
Spectral
Analysis Engine
Power
Computation
The DFS-2000 Spectrometer combines DSPlogic’s state of
the art SpectroCore™ processor with a trusted and wellsupported Keysight instrumentation platform. The
SpectroCore processor continuously analyzes the input
signal in real-time and accumulates the power spectrum
results to eliminate any time gaps in measurements.
Users can choose from two spectral analysis engines: a
standard FFT or a 4-tap Polyphase Filter Bank. The 32kpoint FFT engine is based upon recent advancements in
high throughput, pipelined, parallel FFT architectures,
designed to efficiently utilize hardware resources allowing
improved accuracy, higher dynamic range and reduced
power consumption.
The Polyphase Filter Bank engine improves sensitivity,
spectral leakage and scalloping loss by using an analysis
window several times longer than the FFT window.
Channel
Accumulation
Measurement
Data
The power spectral density (PSD) of the input signal is
computed and accumulated separately for each spectral
line. Power can be accumulated on-board for over 1
minute, freeing up the host processor and PCI bandwidth
to perform post-processing or other functions.
DSPlogic’s real-time SpectroCore processor uses a
combination of floating-point and fixed-point hardware
processing to improve accuracy while efficiently using
resources.
The wideband spectrometer also doubles as a highperformance 2 GSPS digitizer with 12-bit resolution.
The DFS-2000 has a PCI Express 2.0 full-length form factor.
It occupies a single x8 slot in a host PC and communicates
via a high-speed PCIe 2.0 interface.
DSPlogic, Inc. | 20271 Goldenrod Lane, STE 2008 | Germantown, MD 20876 | www.dsplogic.com
DSPlogic | DFS-2000 – Datasheet
May, 2016
Technical Specifications
System Requirements
Operating System
Processor Speed
Available Memory
Available disk space
Windows 10 (32 and 64 bit)
Windows 8.1 (32 and 64 bit)
Windows 7 (32 and 64 bit)
Linux Kernel 2.6 and higher (32 or 64 bit), Debian
7.0, CentOS 6
1 GHz 32-bit (x86), 1 GHz 64-bit (x64),
no support for Itanium 64
1 GB minimum
1.5 GB minimum
Data Acquisition
Number of input channels
Input frequency range
A/D Sample Rate
A/D Sample Resolution
ENOB (typical)
SNR (typical)
SFDR (typical)
Input Voltage Range
Maximum Voltage Range
Coupling
Impedance
Internal Clock
Sampling Jitter
Clock Accuracy
1
DC – 1 GHz
2 Gsps
12-bit, real
9.1 bits @ 410 MHz
57 dB @ 410 MHz
64 dBc @ 410 MHz
+/– 500mV
+/– 3.6V
DC
50 Ohm
225 fs (nominal)
+/– 1.5 PPM
Environmental1
Power consumption
Temperature Range (Operating)2
Temperature Range
(Non-Operating)
Altitude
1.
2.
57 Watt (typical)
0 to +50 °C
(sea-level to 10,000 feet)
0 to +45 °C
(10,000 to 15,000 feet)
–40 to +70 °C
Up to 15,000 feet
Samples of this product have been type tested in accordance with the Keysight Environmental Test Manual and verified to be robust
against the environmental stresses of Storage, Transportation and End-use; those stresses include but are not limited to temperature,
humidity, shock, vibration, altitude and power line conditions. Test Methods are aligned with IEC 60068-2 and levels are similar to MILPRF-28800F Class 3.
PC internal ambient temperature at intake of device fan
DSPlogic, Inc. | 20271 Goldenrod Lane, STE 2008 | Germantown, MD 20876 | www.dsplogic.com
DSPlogic | DFS-2000 – Datasheet
May, 2016
Additional Information
Calibration
Spectral Analysis GUI
The DFS-2000 Spectrometer is factory calibrated and
shipped with a certificate of calibration.
A complete Spectral analysis GUI is included to get
customers up and running quickly while demonstrating
use of the drivers that can be used for custom
application development. The demonstration software is
capable of visualizing spectral data in real time while
logging data in HDF5 file format.
Software Maintenance
The initial purchase price includes software maintenance
for a period of one year. Software maintenance service
entitles you to all software maintenance modifications
and enhancements for the product you purchased.
Software maintenance service also entitles you to web
and/or email-based access to technical support.
Warranty
Each Wideband Spectrometer hardware instrument is
backed by Keysight’s standard Three Year Warranty.

www.keysight.com/find/ThreeYearWarranty
Ordering Information
Part Numbering
Model
DFS-2000-FFT
DFS-2000-PFB
Configurations
-RE2
-IQ1
For more information, please contact us at:
Description
Wideband Spectrometer w/ FFT
analysis engine
Wideband Spectrometer w/
polyphaser filter bank analysis
engine
DSPlogic, Inc.
www.dsplogic.com
20271 Goldenrod Lane, STE 2008
Germantown, MD 20876
Email: inforequest@dsplogic.com
Phone: (301) 977-5970 x705
Description
Single-input, 2 GSPS
Dual (complex) input, 1 GSPS ea.
Call for additional information
Copyright © DSPlogic, Inc. 2016
Information subject to change without notice
DSPlogic, Inc. | 20271 Goldenrod Lane, STE 2008 | Germantown, MD 20876 | www.dsplogic.com