For the past 30 years, U.S shipboard LCD manufacturers have been using shock testing requirements as specified in the MIL-S-901Ddocument to design highly robust products. Now, with the introduction of the updated standard, MIL-DTL-901E, they must exhibit an even higher level of design expertise to provide the U.S Navy with ruggedized products suitable for the modern war fields.
Systems and equipment installed on U.S Navy combatants must be constructed to withstand high impact shocks resulting from weaponry, combat and movement. Shipboard LCDs used in navigational systems, and other on-board mission – and safety-critical equipment also need to be designed as such.
Until now, MIL-S-901D was used as a de facto standard by shipboard LCD manufacturers for shock testing requirements during the product design process. Although, the document covered every shock testing requirement in detail, it left some leeway for the manufacturers in how the required results could be achieved.
The document had to be revised and expanded.
On June 20, 2017, a major update to the MIL-S-901D document was released. This update was named MIL-DTL-901E.
MIL-DTL-901E basically covered every shortcoming that MIL-S-901D had and introduced new naval testing shock standards that are a better fit for the modern war fields.
For instance, MIL-DTL-901E has created three “additional” shock tests that the products must comply with if they’re to be passed for naval deployment. These include:
- Medium weight deck simulating shock test
- Deck simulating shock machine test
- Heavy weight shock test performed on a floating shock platform
The document has also specified classifying the equipment under test into one of two shock grade categories: Grade A and Grade B.
LCD units manufactured for naval development are required to be tested as Grade A equipment.
Shock tests in the documents are further categorized by equipment type, where a Type A test is specified for a principal unit, Type B test for a subsidiary component, and Type C test for a subassembly. A shipboard LCD can be tested under any of these categories depending on the function it will serve in a system.
Do you have any other questions about the design of shipboard LCD monitors in accordance with MIL-DTL-901E shock requirements? Feel free to reach out; REVO will be happy to answer them.
REVO is a global supplier of high-performing industrial LCD display solutions. The company works with OEMs, contract manufacturers and independent electronic distributors, providing them with high quality displays and display kits for their specialty product design needs. For more details, please call 1-866-738-6797 or visit the company’s official website.