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Automated EMI Receivers


Dynamic Sciences International - EMC, EMI Military, Surveillance and Tempest Receivers

Made in the USA 

Dynamic Sciences International is no longer in business, webpage will be updated ASAP

New As of 1/1/2022 Repairs and Recalibrations of DSI Equipment are Now Available



 Automated Receiver Systems Index

Commercial EMI to 40 GHz




EMI Test Measurement Receiver System

 DSI 600 Series


DSI Receiver


Model 600-02

20 Hz to 2.0 GHz


Model 600-04

20 Hz to 4.0 GHz


Model 600-12

20 Hz to 12.5 GHz


Model 600-27

20 Hz to 26.5 GHz


Model 600-40

20 Hz to 40 GHz



System includes the following:

CISPR, EN, ANSI, FCC Test Plan Generator Software
MIL-461 Standard Software Test and Auto Test Generator
Antenna Mast and Turntable Controller Software
Operators and Users Manual
One Year Warranty and Calibration

DSI-600 receiver is:

Fully Compliant with CISPR 16-1
Fully Compliant with MIL-STD 461E/462D

Compatible in the following required test standards:
CISPR 25, Second Edition 2002-08
CISPR 12, Fourth Edition 1997-05






The DSI 600 EMI Test Measurement Receiver System is a step into the future of fully compliant test capabilities integrated into a powerful receiver technology coupled with the computational strength of the on board computer which facilitates high speed data acquisition, an enhanced spectral display module, and SCPI interoperability interface all complemented by DSII's EMIT software.


IF/RF spectrum analysis & time domain capabilities provide an all-in-one multi-functional resource rapidly and accurately providing consolidated concise test results and reports.



Frequency Ranges of Operation
to 2, 4, 12.5, 26.5 & 40 GHz
Receiver Measurement Accuracy
state-of-the-art receiver technology, very low NF, 10dB typ. Sensitivity

EMIT Test Suites
fully compliant to CISPR 16-1,FCC, ANSI, DO-160, EN, MIL-STD 461
Multiple detection modes
peak, quasi peak, average, RMS
Powerful Embedded PC
P3 processors to handle complex embedded algorithms
Display integrated 8.5" TFT color screen
GUI intuitive user-friendly interface
standard SCPI compliant operation
Test Preparation / Report Generation
powerful integrated test plan module annotated results files/graphs for export
AC & DC Powered



Application Notes

Cable Loss

Frequency Tracking Measurements


Pre-Amplification - Good or Bad?

Third Order Intercept Point



Automated Emissions & Surveillance Systems

DSI-110 System


1 kHz to 1.0 GHz

extendable to


100 Hz and 18 GHz

 with converters


DSI Receiver





The DSI-110 integrates either the R-110 or R-110B Receiver with a sophisticated data acquisition and measurement software package and off-the-shelf computer hardware to yield a powerful and versatile RF measurement and reporting system. 

The DSI-110 is ideally suited to a wide variety of signal measurement tasks in either laboratory or field environments, including EMI/EMC testing, RF instrumentation, spectrum surveillance, and remote signal monitoring. 

The R-110 and R-110B receivers cover a wide frequency range (1 kHz to 1 GHz), permitting LF through UHF detection with a single receiver. Both receivers feature excellent noise figure and dynamic range characteristics, spur-free operation, and a large number of bandwidths to facilitate signal capture in the presence of high ambient noise. 

The system software operates in the Windows 3.1x environment; it is exceptionally flexible and easy to learn and use. The software is mature and is compatible with fixed and removable-cartridge disk drives, printers, plotters, and other peripherals. Various ancillary software routines are available which tailor the system to particular applications, such as frequency management and spectrum surveillance. 

The R-110 and R-110B receivers are designed to facilitate expansion, and both accept plug-in modules to enhance their inherent capabilities. The R-110B is fully augmented with wide-bandwidths, FM demodulator, pulse-stretch and slideback, DVM display, and bandwidths in a 1:2:5 sequence. Ancillary units provide panoramic display, frequency extension to 100 Hz and 18 GHz, and calibration with impulse and comb generators.

R-110-40A Panoramic Display Unit

DSI Display


The R-110-40A Pan Display provides a visual presentation of the receiver input frequency spectrum.

The unit features a large, easily viewed screen and an all analog implementation to minimize electrical interference.

R-150 Wide Range Receiver

DSI R-150


The R-150 receiver is a light weight, low power portable receiver with exceptional sensitivity and very low noise.

The R-150 tunes over a frequency range of 100 Hz to 1 GHz and includes 33 bandwidths from 50 Hz to 200 MHz in a modified 1:2:5 sequence.

The receiver includes AM and FM Demodulation, Pulse Stretch and Slideback controls, and an accurate
peak-reading DVM to measure video signal level and provide encoded data via the IEEE-488.2 bus.

The R-150 receiver will accept additional plug-in modules to enhance capabilities or to tailor the
receiver for particular applications.

The receiver can also be supplied in a portable configuration that includes collapsible side handles and a folding stand. Ears are available for rack mounting.

The R-150 may be used in conjunction with software
and a computer system for automated measurement and monitoring applications.


Spread Spectrum Identification

Detection Unit







SSIU-1 Spread Spectrum Identification/Detection Unit works in conjunction with the R-110B Wide Range Receiver to detect and characterize a variety of spread spectrum and digital communication emanations at negative received signal-to-noise ratios.


The SSIU-1 utilizes a proprietary analog signal processor to perform the detection function, and the outputs of the unit may be displayed with any RF spectrum analyzer.


RG-1000A Raster Generator




  • Separately controllable vertical and horizontal synchronization channels.
  • Dual frequency displays
  • Tuning knob, keypad and vernier control for accurate frequency setting
  • Z-axis output channel with gain, offset and invert controls
  • Precision frequency synthesizers with stable clock to facilitate capture of signals
  • Remote operation via IEEE-488 bus

Automated TEMPEST & EMI Test Systems

DSI-1550B TEMPEST Test System

100 Hz to 2 GHz


extendable to


 20 Hz to 40 GHz


 with converters



Sales Restricted to

 NATO Countries Only


The R-1550B TEMPEST Receiver includes everything you need to operate from a frequency range of 100 Hz to 2 GHz. With options, the frequency range may be extended as low as 20 Hz or as high as 40 GHz.


The DSI-1550B TEMPEST Test Receiver is a PC based automated receiving system that permits precision measurements, test and analysis associated with surveillance. TEMPEST or EMI/EMC. The operation provides the user with manual and automatic receiver functions, and user friendly software that gives the user straight forward access to control sophisticated data reduction algorithms and displays. The standard DSI-1550B configuration,that Dynamic Sciences offers is an extensive library of software and hardware accessories that will allow tailoring of a system to specific applications.


  • Selectable Tuning Resolutions: Use the arrow keys below the display to select the tuning digit. The selected digit blinks. Use the step key to perform
    manual step tuning. The step size is determined by the selected digit. The tuning knob also tunes at the selected digit. Frequency Resolution is 0.1 Hz from 100 Hz to 250 kHz; 1 Hz from 250 kHz to 15 MHz; and 100 Hz from 15
    MHz to 2 GHz.
  • Synthesizer Design: Synthesizer design provides you with programmable frequency control. Any frequency may be entered from the
    keypad with up to seven digit resolution.
  • AM/FM Detector Switch: It automatically selects audio source. Gain controls are provided for headphone use.
  • Auxiliary Video Output: For Z-axis display; provides a direct connection for video monitoring use.
  • Z-Axis Output: Provided on the rear panel for rastering of repetitive signals. Automatic remote mode selection is provided by the
    host computer.
  • Low Noise Figure: The nominal noise figure is 6 dB. The noise floor in a 100 Hz bandwidth is -41 dB&#956V. The noise floor in a 10 kHz bandwidth is -21 dB&#956V. There is 80 dB image rejection over the entire frequency range. The noise floor will improve by at least 6 dB&#956V when the R-1550A Receiver is configured in the DSI-1550B TEMPEST Test System.
  • Preselection Filters: There are nine bandpass filters that may be individually selected during tuning corresponding with the receiver band
    and the tuned frequency. Filter values are 200 MHz Low Pass, 200-350 MHz, 350-550 MHz, 550-750 MHz, 750-1000 MHz, 1100 MHz Low Pass, 1.0 GHz-1.3 GHz, 1.3 GHz-1.6 GHz, and 1.6 GHz-2.0 GHz.

DSI-1550B System


10 Hz to 1.0 GHz

extendable to

 40 GHz

 with converters







The DSI-1550B is a PC based automated receiving system that permits precision measurement, test and analysis associated with surveillance, TEMPEST or EMI/EMC. Complete manual and automatic receiver operation is provided, and user friendly software allows straightforward access to and control of a suite of sophisticated data reduction algorithms and displays. In addition to the standard DSI-1550 configuration, Dynamic Sciences offers an extensive library of software and hardware accessories that will allow tailoring of a system to specific applications.



Sales Restricted to

 NATO Countries Only




Frequency Range

10 Hz to 1 GHz (40 GHz with optional down-converter)

Frequency Resolution

0.1 Hz (1 MHz for Bandwidths 20 MHz or greater)


Digital Filters

1 Hz to 500 Hz in a 1-2-5 sequence


Skirt Selectivity

<4:1 (60 dB to 6 dB)

Analog Filters,Linear Phase

200, 250, 300, 400, 500, 640, 800 Hz 1

1.3, 1.6, 2, 2.5, 3, 4, 5, 6.4, 10, 13, 16, 20 kHz


Skirt Selectivity

<3:1 (60 dB to 6 dB)


Impulsive Response

<12% Overshoot

Analog Filters,12 dB Gaussian

50 Hz, 100 Hz, 50 kHz to 200 MHz in a 1-2-5 Sequence


Skirt Selectivity

<4:1 (60 dB to 6 dB)


Impulsive Response

<12% Overshoot


Demodulation Modes

AM, FM, CW, (BFO), Log-AM



Separate AM/FM, Aux. Video and Axis

Video Bandwidth

>0.5 X IF Bandwidth, automatically selected


Pulse Stretcher

Variable .1 to 100 us


Slideback (Squelch)

Continuously Adjustable



+/-2 dB over the entire measurement range of the receiver down to signals at or near thermal noise (Johnson White Noise).



Meets the requirements for automated testing to NACSIM 5100A and MIL-STD 461A,B,C,&D.



Measurement certainty is verified before and after every sweep using built-in calibration sources.



Separate low frequency and high frequency impulse calibration sources provided.


Repetition Rate

10 Hz, 100 Hz, 1 kHz<100 kHz, 1 MHz & Variable Rate Control between decades



Single, External and Line



Five separate input ports are provided for each of the low and high frequency section of the receiver for automatic selection of multiple antennas or probes.



Trigger input allows triggering of the data acquisition to some external event.


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