EMI/EMC, Capabilities and Facilities  EMI
tests and EMC tests, as well as comprehensive design support of
circuit cards, modules, equipment, subsystems, systems, and facilities
are available though our partnership with Northrop Grumman. Tests
are done in the laboratory or in the field. Our test facility in
Sacramento (McClellan), California is conveniently located near
the Silicon Valley. Electromagnetic surveys of a system or an entire
facility can also be done at customer facilities. Name virtually
any requirement for electromagnetic interference and electromagnetic
compatibility and we can meet it - with reliable results.
Full Service Test Laboratory
Our new test laboratory
features two shielded enclosures with filtered, regulated power
to suit almost any need for U.S. or European household current,
or aircraft AC/DC power. See the accompanying figure indicating
the facility layout. The large test chamberis semi-anechoic and
capable of doing commercial (e.g. FCC and EN) EMI tests at 3-meter
and 5-meter distances to over 18 GHz in frequency. It features a
3-meter diameter turntable and 1 to 4-meter (elevation) antenna
mast. The chamber is also capable of performing EMI tests per MIL-STD-461,
RTCA DO-160 and MIL-STD-1275, among others. TEMPEST tests per NSTISSAM
TEMPEST/1-92, NACSEM 5112 (NONSTOP) and HIJACK tests are also performed.
The large test chamber is capable of testing large vehicles (such
as a sheltered HMMWV or other vehicles) and shelters since it has
a floor loading capacity of 4000 lb/ft2 and a door opening that
is 14 feet high by12 feet wide. The smaller chamber is normally
used as a control room, but it can be converted to a reverberation
(i.e. mode-stirred) chamber for high-level radiated susceptibility
tests (>200 Volts/meter). Shielding effectiveness, filter performance,
ESD, power quality and power disturbance measurements are also performed
in the facility.
Test Facility Layout
Responsive Testing, Even in the Field
Even large electronic
systems in the field, such as airplanes, helicopters, or buildings,
are within reach of our mobile testing laboratory. Our test vehicle
carries the equipment needed to test and certify equipment, enclosures,
and facilities to EMI/EMC and TEMPEST standards. We have extensive
expertise in Red/Black installations and TEMPEST tests.
EMI/EMC, Capabilities and Facilities
FAA EMC Safety of
Flight
NACSEM 5110 TEMPEST
Component/Subsystem-level
Compliance
MIL-STD-461
MIL-STD-1275
NSTISSAM TEMPEST/1-92
NACSEM 5112
RTCA DO-160
IEEE STD 299
Commercial Testing
FCC (Part 15 and Part 68)
European (IEC and EN) standards
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EMI/EMC, Capabilities and Facilities
Covering
the frequency range from DC to 40 Gigahertz (higher frequencies
are possible), our test equipment includes EMI and TEMPEST
receivers, signal generators, amplifiers, antennas, surge
generators, spike generators, power-line disturbance analyzers,
and oscilloscopes. TEMPEST instrumentation includes the AEL
ATTR TEMPEST test receiving system (100 Hz to 18 GHz frequency
coverage with 40 Hz to 200 MHz bandwidths) that uses the AEL
TS-100 test software for automated measurements, the Electro-Metrics
NTR-51B nontunable test receiver, and the Honeywell PTD/PAD/BAG
TEMPEST test set. Our engineers are also experienced in the
performance of NONSTOP TEMPEST. EMI receiver instrumentation
includes two HP8566B spectrum analyzers (100 Hz to 40 GHz
with available frequency extension hardware) with pre-selector.
Susceptibility tests are performed with a large collection
of power amplifiers (more than 100 Watts from 30 Hz to over
4 GHz, more than 10 Watts from 4 GHz to 18 GHz, and 1 Watt
from 18 GHz to 40 GHz), signal generators, transient generators,
RF current probes, and antennas. EMI tests use Quantum-Change
TILE software for automated emissions and susceptibility tests.
EMI/EMC, Capabilities and Facilities
EMC/TEMPEST Test Vehicle in action.
Documentation and Problem Solving
Our
service doesn't stop with testing. We can provide design services
related to circuit cards, modules, chassis, and systems of
all kinds. We can provide full documentation, including control
plans, design guides, test plans, test procedures, detection
and facility certifications, and formal test reports. If tests
indicate non-compliance with requirements, our experienced
engineers can assist in identifying and fixing the problem.
Of course, we recommend that our engineers be involved early
in the design stage to avoid expensive retrofits and re-certification
tests. Our EMC engineers are experts not only in EMC and TEMPEST
design, analysis, and testing, but also in compliance with
government regulations and specifications.
Civilian and
Commercial Test Services
The same expertise that the U.S. Department of Defense relies
on is also available to other defense companies and to commercial
firms. Before full production, commercial equipment manufacturers
can verify compliance with applicable regulations (FCC, EN,
IEC, etc.). Financial institutions can ensure that electronic
fund transfers are safe from theft, and hospitals can ensure
that medical equipment is not disrupted by extraneous signals.
Summary of
Capabilities and Specifications
Laboratory Test Equipment and Facilities
Computer-controlled TEMPEST and EMI emissions and susceptibility/immunity
systems
Conduction and radiation sensors
Signal generators and amplifiers
Surge and Transient Generators
Power line disturbance analyzers
Oscilloscopes
2 chambers (3rd one under construction)
Platform/System-level Compliance
MIL-STD-464 EMC
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