Military electronics teardown MLRS interface unit MK2

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[@g0ozs]

The BATES message indicator on the front panel and the 8086 CPU suggest that it was an interface between the Battlefield Artillery Target Engagement System (an artillery fire control system) and the MLRS. Most likely this unit received BATES messages from the central fire control computer over radio and used them to control the MLRS. I have seen other BATES equipment that was also 8086 or 8088 based. Later it became an ISA card fitted inside a rugged laptop see: www.g0ozs.org/misc/LACS/index.html

[@ljubomirculibrk4097]

MLRS build like a MBT It seems that in US ARMY there is a lot of sc...ing going on. Its a beauty, realy nice and sturdy build. Thanks for a great video, my best regards.

[@ChipGuy]

10:20: This plate is certainly made out of Prefabulated Amulite. Very well produced.

[@juk-hw5lv]

These videos are real ASMR for transistorheads. Merci for making them! PS Your pullover has a little British Army feel ;)

[@oriole8789]

Interesting unit, very well made. Thank you for the video! I've never seen that type of wire loom before, very nice. Connectors are a good way to date these types of units, since they almost always have date codes (9601 in your case). I was surprised that you got no action on that little LED display, since this unit does seem to have BITE and I'd expect it to output a code. Perhaps, no code = all is well. You could remove some internal circuit board (or disconnect a plug) and re-power the unit, to see if it produces an error code. Another thought is that the unit may fail to start if your PSU can't deliver enough initial current. It may be triggering under-voltage protection. 37:06 I've seen the type of 'under-component' heatsinking that this unit uses, where select parts are thermally bonded to a piece of machined metal from the bottom which conducts heat to the outside of the enclosure. Modern systems based on VPX/VME interfaces typically have shared heatsinks on top of parts (plus internal PCB ground planes of course), but you see 'heatsinks under components' in power supplies, where through-hole passives are sometimes cooled this way (resistors, diodes, etc). It may seem "overkill", but some of this type of gear is working in uncooled environments at 100C+ ambient. Very few chips are available in mil-grade 150C+ versions (plus, this skyrockets unit cost and future supply is not guaranteed, requiring manufacturers to stock/waste components). The vast majority of modern military gear (even fighter jets etc) uses mostly industrial grade (-40C - 85C) components, so cooling becomes critical. I've seen some seemingly impressive assemblies which kept experiencing high failure rates in the field, including failures from chips which I've never seen fail before since they're not heat-generating parts.. but when operated outside of their limits, unexpected things happen. You can have redundancy for computation in various ways, so you can go with a reduced BOM on those parts, but power supplies can take out an entire system, so those typically have more high-spec components.

[@warphammer]

"Frimley" likely refers to the Frimley branch of Eliott Automation, their defense division. Now BAE Systems.

[@spodula]

A the MOD, doing its best to mitigate the late 80's glut of screws...

[@bblod4896]

Interesting how the word "Byte" is spelled "Bite". Thanks for the view.

[@Richardincancale]

B Blod BITE stands for Built-In Test Equipment - ie self-test diagnostics

[@andromeda653]

Gta 5 acarmı

[@adilhakam887]

The worst possible accent no offense 😂😂😂