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• • • TEST & MEASUREMENT • • •


Test fixture enables high frequency measurement of irregular shapes


the IM9202 makes it simple to take reliable high frequency measurements of surface mount and leaded components when using Hioki's IM7580 range of high-performance impedance analysers. Use of the versatile fixture makes testing easier, and


E


enables more reliable and repeatable measurements, higher throughput, fewer handling errors and greater measurement accuracy. Its flexibility in use makes it simple to test complex components, with consequent savings in time and costs.


lectronic components in a wide range of shapes and sizes can be tested using a new test fixture from Hioki. Available from MDL Technologies,


The IM9202 can hold SMDs of irregular shape as


well as axial and radial leaded components, including film capacitors and RFID and NFC tags. SMDs from 1.6 mm to 23 mm long can be tested as well as radial components with lead spacings of up to 26 mm. These types of components are frequently being


used in power circuits with switching frequencies above 1 MHz, with standard practice making it necessary to test their characteristics at frequencies above 10 MHz. The IM9202 is suitable for testing at frequencies from 0 to 600 MHz. "The Hioki IM9202 lets component manufacturers measure devices that are larger than with other test


fixtures," says MDL managing director Mark Lucock. The Hioki IM7580 series impedance analysers for


which the fixture is designed are available in five models, providing measurement frequency bands up to 3 GHz. With a half-rack footprint and a palm-sized test head, they offer test speeds as fast as 0.5 ms with a repeatability of 0.07%. Applications for the new test fixture include the R&D of large or irregular shape components for use in high power, high frequency circuits, as well as components and antennas for RFID and NFC circuits.


MDL TECHNOLOGIES mdltechnologies.co.uk


DENSITRON SQUARES UP FOR TEST AND MEASUREMENT D


ensitron, provider of innovative Human Machine Interaction (HMI) and display technology, has introduced a novel, square


format 1:1 aspect ratio 4.0’’ Industrial Rugged TFT Module with exceptional features designed for operation in challenging environments. Aimed at instrumentation; handheld test and


measurement applications; and niche security products, the module’s in-plane switching (IPS) glass uses automotive grade fluid capable of


operating from -30°c to +85°c, ideal for use in harsh environments with extreme temperatures. Further to this ultra-wide operational


temperature feature, Densitron engineers have combined an ultra bright, compact LED design that delivers 1000 candelas per square metre peak luminance in a 2.3mm overall mechanical depth. The module boasts 50,000-hour LED MTBF and is designed for longevity with anticipated production spanning 5-7 years.


Densitron UK business development manager


Richard Applin says, “Square format industrial TFT modules have been the preserve of niche avionic instrument clusters, but we see a wider remit within many styles of instrumentation. We wanted to solve real world engineering problems and offer a unique module which can operate in the harshest of environments.” The module’s 480x480 display resolution delivers


a crisp user interface; large all-round viewing angles; high contrast; and a black default state. Solisbond, Densitron’s proprietary optical


bonding process, can be applied between the TFT glass and PCT sensor to improve and enhance optical performance in direct sunlight. Applications can dim the LED array in low


ambient light levels or indoors; but can drive the module at sufficient brightness to counteract the strongest direct sunlight, making this module ideal for outdoor operations. Densitron has also manufactured an industrial projected capacitive touch (PCT) sensor as standard and can offer bespoke cover lens design for any client project. Continuing to reduce barriers for engineering


design, users can benefit from stock holding for samples; fast production lead times; and no minimum order quantity, even for customised orders. Applin adds, “This new display greatly expands the operational range of our industrial display models. As many industries, including broadcast, are expanding their remote production capabilities, this enables those same organisations to reach further into remote environments that would previously have been operationally prohibitive for typical test and measurement devices due to temperature extremes. It’s just one more way that our engineers have found to extend the boundaries of what is possible.”


DENSITRON densitron.com


40 ELECTRICAL ENGINEERING • OCTOBER 2020 electricalengineeringmagazine.co.uk


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