Tempest Testing
DTB - Dayton T. Brown, Inc. is certified under the National Security Agency (NSA) Tempest Endorsement Program
to provide Tempest testing services.
www.nsa.gov/ia/industry/tempest/TestServicesEndorsed.cfm?MenuID=10.2.1.3.3
We can perform testing in accordance with a variety of requirements including NSTISSAM
and AMSG specifications. With over 20 years of Tempest experience, we can provide
a full range of support, from proposals, to control and test plans, laboratory and/or
field testing, failure analysis and corrective action, and installation guidance.
Magnetic Field Emissions and Immunity Testing
(MIL-STD-2036A and MIL-STD-1399)
According to Mil-STD-2036A, typically applicable to shipboard requirements testing,
DTB is capable of meeting the requirements for DC magnetic field environments.
In addition, we can perform all the testing and measurements specified in paragraphs 5.3.1 through 5.3.9 of MIL-STD-1399, Section 300A. DTB can provide ungrounded user equipment input power in accordance with MIL-STD-1399, Section 300A. Our variable voltage and variable frequency testing power capabilities are as follows: 440 VAC Line to Line Three Phase, up to 60 kVA, 115 VAC Line to Line Three Phase, up to 50 kVA, 115 VAC Line to Line Two wire, up to 20 kVA.
We also offers the 1,000 Volt Voltage Spike test and the 2,500 Volt Voltage Spike test on three phase or two wire configured test items in accordance with paragraph 5.3.3 and Appendix A of MIL-STD-1399, Section 300A using an isolated power source as required by the specification.
Further, our skilled engineers and technicians can perform the DC Magnetic Field Susceptibility Testing specified in MIL-STD-1399, Section 070. Our largest test coil has internal dimensions of 17 feet by 10 feet.
During MIL-STD-461D, E and F Testing,
we can provide up to 200 Amperes per Phase of 440 VAC Three Phase, 60 Hz ungrounded filtered power, and 115 VAC Line to Line Three Phase, 60 Hz ungrounded filtered power in accordance with MIL-STD-1399, Section 300A.
Site Surveys
Dayton T. Brown, Inc. has performed site surveys at a variety of locations. We have
portable equipment and power sources to perform on site testing in most locations.
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We can perform surveys for: |
- Conducted Ambient DC to 1 GHz
- Magnetic Field, DC to 30 MHz
- Electric Field, 30 Hz to 40 GHz
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Shielding Effectiveness Testing
DTB has over 40 years of SE experience from 1960’s era aircraft harnesses through
latest in Ethernet CAT-7 cables and composite materials. There are dozens of Shielding
Effectiveness (SE) specifications in the military and commercial worlds with, most
designed to provide a tool for quality control for specific materials.
We have specialized
in adapting these specifications to develop tests to evaluate SE in real world conditions.
In conjunction with the U.S. Navy, DTB built one of the first large stirred mode
chambers to test the SE of large armament systems.
Many of our customized test approaches
have been incorporated into product development specs or test specs.
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DTB has performed SE testing on hundreds of items including the following: |
- Rooms – shielded and unshielded
- Cabinets – system racks, equipment enclosures
- Panels – metal, composites, laminates, glass,
fabric
- Cables – power, RF, communications, Ethernet,
etc.
- Connectors
- Gaskets
- Special/Unique – aircraft fuselage, torpedo
hull, aircraft engine cowling
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New products or applications also undergo environmental and vibration evaluations
in our lab. We have performed specialized tests such as combined temperature/vibration
to assess pin chatter in connectors, cold temperature bend radius for cables, or
long term corrosion tests on composite panels, just to name a few.
Electro-static Discharge Testing
- EN61000-4-2
- ESD Testing
- ISO 10605
- ESD testing of Vehicles and Vehicle Components
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High Power Capabilities
- AC 480V 3-Phase 200 Amp
- DC 300V 150 Amp
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Power Quality Testing
- MIL-STD-704
- MIL-HDBK-704 including 270 VDC capability
- MIL-STD-1399
- MIL-STD-1275
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Electrical Testing
DTB can conduct numerous types of electrical measurements and is experienced in
designing and calibrating measurement setups that can get you the information you
need to verify your devices performance.
- Voltage Spike
- Electrostatic Discharge
- Resistance
- Capacitance
- Inductance
- Residual Magnetic Field
- Frequency
- Voltage
- Current
- Leakage Current
- Dielectric Breakdown
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- Power
- Power Factor
- Impedance
- Contact Resistance
- Contact Bounce
- Gain
- Insulation Loss
- Insertion Loss
- Return Loss
- Cross Talk
- Frequency Response
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Sample Application: Rail Transportation EMI / EMC
During the past seven years, New York City Transit (NYCT) has placed into service
more than 1,800 “New-Technology” subway cars with up to 1500 more on the way. And
since 2000 through as recently as late 2006, Dayton T. Brown, Inc. has performed
the EMC acceptance testing for each new train model.
So how do you test a ten-car
train that is over 600 feet long, weighs over one million pounds, requires 6000
amps at 600 Vdc to operate, and is moving at 50 mph?
By assembling a team of engineers
from several disciplines within our lab, Dayton T. Brown, Inc. has developed the
instrumentation, methods, and expertise to perform EMC acceptance testing of the
newest technology subway cars.
Sample Application MIL-STD 461
Facilities & Equipment
Equipment
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• Multiple EMI receivers for the range of 20 Hz to 40 GHz
• Multiple Signal Sources for the range of DC to 40 GHz
• Transient Test Systems for:
MIL-STD-461A, B, and C, Methods CS06 and RS02 (Two available).
MIL-STD-461F Method CS106
MIL-STD-461D, E and F, Method CS115 (Two available).
MIL-STD-461D, E and F, Method CS116 (Two available).
50µsec pulse generator for CS06/RS02 type testing
MIL-STD-1399 Transient Generator
RTCA/DO-160 Section 17 Transient Generator Several Custom Transient Generators
for automotive testing.
• Power Amplifiers
DC to 100 kHz, 1000 Watts CW, Multiple Amplifiers.
Power Op-Amps, ±36V, ±12A, DC to 100 kHz, Multiple Amplifiers.
10 kHz to 200 MHz Multiple Amplifiers up to 2500 Watts CW.
200 to 1000 MHz, Multiple Amplifiers up to 1000 Watts CW.
1 to 18 GHz, Multiple Amplifiers, up to 500 Watts CW.
18 to 40 GHz, 10 Watts CW.
200 to 1300 MHz, 5000 Watt Pulsed Source.
• Antennas
Antennas capable of generating in excess of 200 V/m from 10 kHz to 40 GHz Electric Field and DC to 30 MHz Magnetic Field.
For most Emissions testing antennas we have at least three to allow for multiple test setups. For most Susceptibility testing antennas we have at least two to allow for multiple test setups.
Multiple Helmholtz coils
Multiple Single loop magnetic field coils for DC Magnetic field testing of very large items. The largest is 17’ long by 10’ high capable of generating a DC magnetic field of 20 Gauss.
Multiple Magnetic Field Coils for RS101 testing
• Current Probes
Multiple Current Monitoring Probes for 5 Hz to 1 GHz
Multiple Active Current Monitoring Probes for DC to 100 MHz
Multiple Current Injection Probes for 10 kHz to 1 GHz
• Line Impedance Stabilization Networks
50 µH LISNs for MIL-STD-461D, E and F and other specifications. We have over 40 available.
50 µH LISNs for FCC/CE testing and other specifications. We have over 8 available.
5 µH LISNs for Automotive, RTCA/DO-160, and MIL-STD-461A, Notice 4 and other specifications. We have over 30 available.
57 µH LISNs for MIL-STD-461A, Notice 4. We have 6 available.
0 µF capacitors for MIL-STD-461 A, B, and C, RTCA/DO-160 and other specifications. We have over 40 available.
UK DEF STAN LISNs, 8 available.
Tempest LISNs, 4 available.
Other specialized LISNs, Filters, and networks available for specialized testing.
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Test Facilities
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• Shielded Anechoic Chamber
ANECHOIC 1:
20’ by 20’ by 12’ high
Pyramidal and Ferrite Tile absorber
7’ by 3’ personnel door and 7’ high by 6’ wide large equipment door
Shielded Ancillary Enclosure measuring 8’ by 12’ by 8’ high. Ancillary chamber has DC, 60 Hz and 400 Hz power available.
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
480VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
ANECHOIC 2:
30’ by 32’ by 12’ high
Pyramidal absorber
8’ by 3’ personnel door and 8’ high by 10’ wide large equipment door
Shielded Ancillary Enclosure measuring 8’ by 16’ by 10’ high. Ancillary chamber has DC, 60 Hz and 400 Hz power available.
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
480VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*.
ANECHOIC 3:
15’ by 18’ by 10’ high
Pyramidal and ferrite tile absorber
8’ by 3’ personnel door and 8’ high by 6.5’ wide large equipment door
Shielded Ancillary Enclosure measuring 10’ by 11’ by 8’ high. Ancillary chamber has DC, 60 Hz and 400 Hz power available.
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
ANECHOIC 4:
20’ by 20’ by 10’ high
Pyramidal and ferrite tile absorber
8’ by 3’ personnel door
Shielded Ancillary Enclosure measuring 12’ by 16’ by 10’ high. Ancillary chamber has DC, 60 Hz and 400 Hz power available.
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
• Shielded Solid Chambers
SCREEN CHAMBER:
20’ by 20’ by 10’ high
7’ by 3’ personnel door and 10’ high by 9’ wide large equipment door
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
6 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
TEMPEST CHAMBER:
20’ by 16’ by 10’ high
7’ by 3’ personnel door and 8’ high by 6’ wide large equipment door
Shielded Ancillary Enclosure measuring 12’ by 8’ by 8’ high.
Ancillary chamber has DC, 60 Hz and 400 Hz power available.
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
• Reverberation Chamber
Chamber used for Mode Tuned testing for automotive, military and commercial aircraft testing.
Chamber also used for shielding effectiveness testing.
Chamber calibrated per EN 61000-4-21 for Mode Tuned testing.
Large Z fold tuner per EN 61000-4-21
Computer controlled
16’ by 12’ by 10’ high 7’ by 4’ door
POWER:
DC, 0 to 600V at up to 500A*
AC 115VAC, 60 Hz, 3 Phase, up to 200A*
115VAC, 400 Hz, 3 Phase, up to 150A*
Variable Frequency and Voltage from Solid State Programmable AC Power Sources.
16 to 819 Hz, 0 to400V, Single phase at up to 375A or three phase at up to 125A per Phase and 47 to 500 Hz 0 to 120V at up to 175A/Phase*
• GTEM
This chamber allows high speed testing to Commercial Radiated Emissions and Immunity Standards in an EMI free ambient environment.
The chamber is also used by several automotive standards.
Chamber specifications are as follows:
POWER:
1.75 Meter Septum Height.
Chamber overall size is over 26’ long by 13’ wide by 11’ high.
Large access door is 1 meter wide by 1.3 meter high to allow personnel to enter cell and work on test item.
Small access door near tip of cell.
Maximum test item size is 1.5 meter long by 1.5 meter wide by 1.32 meter high.
Uniform field area (±3 dB) is 1.15 meter long by 1.15 meter wide by 0.6 meter high.
Non-conductive remote controlled manipulator for positioning test item in the required 3 axis.
1 kW power maximum RF power.
Radiated Immunity Field Strength in excess of 200 V/m.
Frequency range DC to 20 GHz.
For Radiated Emissions from 30 MHz to 6 GHz correlatable to OATS at 3, 10, or 30 Meters.
• OATS
3 and 10 Meter Open Area Test Site (OATS), certified accredited by A2LA.
FCC Certified site.
6 foot diameter flush mounted turntable, rated for over 3000 lbs.
Climate controlled site, covered with a 24’ wide by 48’ long by 20’ high RF transparent fiberglass structure that allows testing in all weather conditions.
Climate controlled control room located below ground plane.
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