MIL-STD-810 Test Method 520.3

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MIL-STD-810 Test Method 520.3 Temp/Humidity/Vibration/Altitude

Hi, Jim Shaw here from Crystal Group. Going to spend a moment just talking about MIL-STD 810 method 520. Method 520 is really kind of a combination of a series of tests that you can run. They would be high temperature, low temperature, humidity, altitude, and vibration. So it’s really method 500, 501, 502, 507 and 514. You get to combine all of those together into a single test and really you get the effect of it’s a cross-effect of other tests associated with the materiel that you’re trying to qualify and in our case it’s usually a computer or server. So one of the things that 520 does for you and is useful for is to see is there a combination of vibration and humidity that work together to create a problem for your unit or a temperature or vibration that would work in conjunction with each other that would further stress your unit so it would be more difficult to pass.

This type of testing is usually reserved for some relatively extreme environments where there might be a missile launch or a rugged altitude, a high terrain type of a vehicle, or even a fighter jet, aircraft, things like that where you have a combination of environmental effects and rather than test them individually you need to test them together to see what the effects of all of these things are on the unit at one time. And so that’s what the purpose of 520 is and there’s a tailoring process that’s essential or critical to making the test valid for what it is that you’re trying to accomplish. And so it’s very easy to over-test in this case or under-test and so you really need to tailor appropriately so that you get the information that you need rather than just driving cost into the system or potentially creating a liability. So that’s what Method 520 is all about, I hope that that’s helpful. Have a great day.

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