 
|
  
   |
| About
CE-Mag Free Subscriptions Current Issue Article Archives ESD Help Mr. Static Web Gallery Staff Info Contact us
|
|
|
||
|
|
||
RESOURCESThe Latest in Compliance Engineering Products and Services BPL Testing and Services On-site product testing, consultation, and other services are offered for companies developing broadband over power line (BPL) technologies. The company provides EMC testing as well as development of testing methodology. In addition, the company can act as a representative to FCC for product approval. BPL technology enables high-speed data to move across existing power lines. FCC recently issued a Notice of Inquiry to seek comments on the compatibility of the technology. Product Safety Engineering Inc., Dade City, FL; tel: 352-588-2209; fax: 352-588-2544; e-mail: arobbins@pseinc.com; Internet: http://www.pseinc.com. ESD Clip
Surface-Mount Inductor
Surge Protector
Resettable Fuses
Microwave Switching Platform
Modular Jack
EMC Compliance Software
EMI/RFI Shielding
Power-Line Filters
Bluetooth Verification System
Substation Power Protection Preengineered, preassembled, integrated drop-in systems for protection, control, and management of industrial power substations serve as modular control rooms. The SEL-7000 substation systems are turnkey packages that offer plant managers flexibility in meeting both their preferences and best engineering practices. The drop-in control rooms provide complete application solutions combined with advanced system automation, communication, and security capabilities. Designed, prefabricated, and tested off-site before installation at the substation, individual panels or an entire integrated control building can be supplied. The product family ranges from specific application modules to complete substation systems that are supported by a human-machine interface, graphical displays, and an onboard processor. Schweitzer Engineering Laboratories (SEL) Industrial Solutions Group, Franklin, TN; tel: 615-507-2184; fax: 615-507-2188; Internet: http://www.selindustrial.com. Immunity Test Accessories
A pair of products assist in testing for conducted immunity to European or military standards. The current-probe cradle holds injection or monitor probes at the prescribed height, and the insulated cable stand holds the I/O bundles the required 100 mm from the ground plane by means of a hook-and-loop strap. The devices are delivered from stock. Custom dimensions are available. Compliance Systems Corp., Placentia, CA; tel: 714-528-7217; fax: 714-528-3513; e-mail: info@compliancesys.com; Internet: http://www.compliancesys.com. Ceramic EMI Filters Press-in ceramic filters for suppressing EMI in such microwave and radio-frequency applications as attenuators, oscillators, synthesizers, and combiners provide fast mechanical bonding without soldering, thus eliminating the attendant assembly costs. The knurled 4304 filters have a flange diameter of 0.156 ± 0.005 in. and an overall length of 0.625 ± 0.025 in. They encompass a variety of voltage, attenuation, and capacitance ranges. The manufacturer also offers standard solder-mount EMI filters, as well as feed-through capacitors. Tusonix Inc., Tucson, AZ; tel: 520-744-0400; e-mail: sales@tusonix.com; Internet: http://www.tusonix.com. |
An
ESD clip electrically connects a wire shelf to a shelf post to reduce
the ESD risks caused by ungrounded shelving. The clips install without
tools in about 5 seconds to fully assembled and loaded shelving.
They also provide a visual indication that the shelves are grounded.
The ESD Clip fits most Metro Super Erecta, Super Adjustable, and
other compatible shelving. One or more clips can be installed per
shelf. A common ground, such as metal feet, a grounding chain, ESD
wheels, or other suitable method, can be used for the entire unit.
Static Dynamics, Beaverton, OR; tel: 503-646-4600;
Internet: 
Self-leaded,
flat-wire surface-mount DR356-series inductors offer cost and space
efficiency in dc-dc convertor and switching power supply applications
and accommodate pick-and-place manufacturing equipment. Providing
high-performance filtering, the low-profile components handle high
levels of dc current. They feature an inductance range of 580 nH–2.3
µH (±20%), rated current from 22 to 12 A, and dc resistance
value of 1.45–4.3 (W). Inductors
in the DR356-1 series have a maximum height of 0.185 in. and a 0.50-in.
footprint, while the largest DR356-2-series inductor, having the
same footprint, is 0.197 in. high. The devices are made from UL
94V-0–rated materials and operate between –40°
and 105°C. Datatronic Distribution Inc., Romoland,
CA; tel: 888-889-5391; fax: 909-928-7701; e-mail: 
A
quick-connect surge protector for 66-block multiple-line systems
features an easily seen LED indicator that facilitates troubleshooting
by going out when the protector has blown. Owing to its economical
single-pair configuration and availability in five service voltages
between 30 and 130 V, the 3.25 X 1.60 X 0.38-in., 14-g SNAP LiTE
can accommodate a variety of telecom, voice data, and twisted-pair
video applications on one 66-block. The easy-to-install snap-in
surge protector can sustain thousands of small surges; when it is
sacrificed in a large event, substitution of a new device is effected
quickly. The protector allows a continuous current of 150 mA maximum
and offers tip-to-ground and ring-to-ground protection. All models
feature sneak current protection and guard against overamperage
and overvoltage. Ditek Corp., Largo, FL; tel: 800-753-2345;
fax: 727-812-5001; Internet: 
A
line of 250-V overcurrent protection products is designed to shield
telecom networks from hazards originating with lightning strikes
and contact with ac power lines. Multifuse MF-R/250 and MF-RX/250
resettable fuses come in a wide range of operating currents with
Ihold values of 80–180 mA and initial resistance values of
0.8–22 W. They are available epoxy
coated for higher insulation, uncoated for faster tripping, and
in narrow and binned resistance ranges for line balancing. The fuses
are part of an extensive line of telecom circuit-protection components.
Bourns Inc., Riverside, CA; tel: 909-781-5500;
fax: 909-781-5006; Internet: 
A
modular platform for high-performance configurable, terminated microwave
switching applications accepts up to four microwave switch plug-ins
in a dual-slot module. The 1260-64M VXI module eliminates the need
to acquire separate C-size cards for each type of microwave switch
a system requires. Designed to switch signals in cellular, PCS,
and satcom communication systems, the microwave platform is well
suited for ATE systems for testing military equipment. Various microwave
relays, from dc to 480 GHz, are available and can be accommodated
on the switch card. Configuring the switch with a dc relay driver
makes possible low frequency and power switching, as well as microwave
switching. Relays can be replaced in under 5 minutes without removing
the module from the VXI system. Racal Instruments Inc.,
Irvine, CA; tel: 949-859-8999; fax: 949-859-7139; Internet: 
A
modular jack for telecom and local-area network applications features
integrated yellow and green LEDs that facilitate recognition of
transmit/receive and line status, respectively. The right-angle
PCB-mount RJ45 jack is fully shielded and includes enhanced top
and side grounding tabs for good conductivity, panel grounding,
and EMI/RFI protection. Snap-in board-retention tabs provide additional
postsoldering stability. The LEDs are positioned at the top of the
connector for good visibility. The jack is made of black nylon 46
for compatibility with wave and reflow soldering, and the contact
material is nickel-plated phosphor bronze selectively plated with
gold on the contact area and tin-lead on the solder tails. Kycon
Inc., San Jose, CA; tel: 408-494-0330; fax: 408-494-0325.
EMITest
for TestStand is an all-in-one software package designed to optimize
EMI/EMC precompliance testing automation. Created within LabView
6.1, the software is designed for accuracy, versatility, consistency,
and convenience. To ensure accuracy, the program is configured to
partition a frequency range into sections to ensure that data points
are not truncated due to resolution limitations of the measurement
receiver. Preselected transducer correction factors can also be
inserted. All aspects of a test, including equipment used, product
specifications, and notes on the setup and product configuration,
can be saved to ensure consistency. The software itself is stable;
variation from test to test is under 0.5 dB. Key features include
user-determined frequency ranges and specification limits, storage
of antenna and cable factors for recall, and testing capability
from 10 kHz to 40 GHz. National Instruments, Austin,
TX; tel: 800-891-2755; Internet: 
In
addition to featuring a complete line of standard and custom EMI/RFI
shielding products, a manufacturer's catalog highlights metallized
fabric gaskets and new track-mounting options for finger stock.
The 52-page catalog includes technical drawings and compression
values for all beryllium copper finger-stock profiles, and it illustrates
the clip-on, snap-on, stick-on, hook and stick-on, track-mounting,
and special installation styles available. Also presented is information
on knitted-mesh shielding, elastomeric gasket materials, fan vents,
filters, honeycomb vents, and Twinseal and Trimshield gaskets. The
user-friendly product guide contains material specifications, information
about attenuation and managing compression, and a compatibility
chart. Tech-Etch Inc., Plymouth, MA; tel: 508-747-0300;
Internet: 
Protection
from conducted electronic noise is provided for three-phase applications
from 100 to 300 A by a line of power-line EMI filters. Available
in four models with nominal current ratings of 100, 150, 200, and
300 A, the small-footprint, high-performance FL-series filters fulfill
the requirements of inverters, variable-speed motor drives, RF generators,
and uninterruptible power supplies. System features include an integrated
coil design and very good attenuation. Minimum insertion loss in
a 50-(W) circuit at, for example, 1.0
MHz is 58 dB in common mode and 62 dB in differential mode. Rated
voltage is 480 V ac maximum, 50/60 Hz, and the hipot rating for
1 minute is 2000 V ac line to ground and 2800 V dc line to line.
Emission Control Ltd., Butler, WI; tel: 262-790-0092;
fax: 262-790-0095; e-mail: 
A
specialized test suite enables product developers to perform extensive
in-house compliance testing to help ensure immediate success when
Bluetooth products are certified at a Bluetooth qualification test
facility. The BlueVision verification suite is designed to work
in tandem with the BTTracer/Trainer Bluetooth Version 1.1–certified
analyzer/ exerciser, a design and debug expert system for quick
identification and correction of conformance issues. The verification
suite incorporates a comprehensive package of Bluetooth test suites
for all levels and types of certification; users may purchase only
those suites that address specific product certification requirements.
Released so far are the Baseband, Link Manager, General Access Protocol,
and Protocol Subsystem test suites. Computer Access Technology
Corp., Santa Clara, CA; tel: 408-653-1262; Internet: 
