electronics Archives - Sierra Cases

Protecting Electronics from Vibration (Part 2)

Sierra Cases — Wed, 06 May 2015 19:10:10 +0000

A transit case uses isolating mounts to protect electronic payloads from vibration. These mounts are chosen with a natural frequency of vibration significantly different from the expected excitation frequency. This helps ensure the minimum of vibration is transmitted to the payload. However, there are challenges: Often the excitation frequency is either not known or a […]

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Protecting the Payload from Vibration (Part 1)

Sierra Cases — Wed, 15 Apr 2015 20:38:10 +0000

Vibration is bad for electronic devices such as radio transmitters and computers. Screws can work loose and cards and cables can come unplugged. As a result, equipment is sometimes inoperable after a long journey. Fortunately, that kind of damage is usually easily repaired, unlike the harm caused by resonance. Excitation at the natural frequency Like […]

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Verifying How Much Shock Protection a Transit Case Provides

Sierra Cases — Wed, 25 Mar 2015 18:04:01 +0000

Electronic systems need transporting with care. Sudden impacts, as if dropped from the back of a truck, can pop IO cards out of their slots, disconnect cables, and damage hard drives. That’s why you’ll often see acceleration or g-force limits called-out in specification documents for many electronic products. Controlled deceleration A transit case protects against […]

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If it Needs Connecting, it Needs an I/O Panel

Sierra Cases — Wed, 04 Feb 2015 19:31:06 +0000

Something first-time transit case buyers often overlook is adding an I/O panel for easy cable connection. Without it, the case is little more than a storage box, albeit one providing protection from temperature extremes, dust, humidity and shock impact. Using the equipment inside means either taking it out of the case or running with the […]

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Removable Racks Simplify Equipment Exchange

Sierra Cases — Wed, 21 Jan 2015 20:29:21 +0000

Installing electrical equipment in rack mount cases can challenge the most dexterous technician. The usual procedure is to make the connections at the rear before mounting the unit in the rack. Inevitably though, the cables bunch up behind the equipment, stopping it from sliding into place. A second pair of hands is then needed to […]

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How Humid Can it Get

Sierra Cases — Wed, 28 Aug 2013 18:14:15 +0000

When warm air meets a cold glass of beer, condensation forms on the surface. The resulting drips may be annoying, but they won't ruin your beer. Should condensation occur inside a transit case, it's another story. Condensation and Humidity Condensation happens when water vapor in air cools. Cooling lowers the kinetic energy of the water […]

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