Systel Advantages
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Systel introduces the most state-of-the-art industrial computing systems in
the market today. Systel’s leading edge ruggedization technology is unmatched,
with products that are designed to meet extremely demanding applications. All
Systel products fall into one of two categories. The “Extreme Industrial Chassis”
are designed to stringent standard with all eight of the following advantages,
while some products designated as “Industrial Chassis” are designed using
selected advantages. All systems are meticulously designed and go through rigorous
testing and review before they are certified and introduced into the market. It’s
this proprietary process and technology that separates Systel from its competitors.
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1. Chassis Material
Systel chassis are designed and manufactured locally using a combination of Cold
Rolled Steel (CRS) of 18, 16, 14 and 10 gauge thickness as well as 5052-H32 aluminum
in sizes of .1875”, .090” and .060” thickness. To prevent rust and corrosion all
surfaces of CRS are finished with a Zinc Electroplate and yellow chromate process.
All aluminum parts are finished with gold alodine in order to maintain the EMI/RFI
integrity between fitted parts. These finishes, including the zinc electroplating
are electrically conductive and provide the grounding required internally for CE and
FCC regulatory certifications. The chassis and internal structural pieces are riveted
together using an aircraft style rivet process for strength. Stainless steel PEM
fasteners and hardware are used exclusively in all designs for increased reliability.
Steel front panels are 10 gauge material and aluminum panels are .1875” thick. Both
are powder coated to the customer’s specification.
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2. Chassis Tie Down
All Systel designed chassis employ numerous "formed up areas", typically known
as “Bridges”, and are used as tie-down points for internal wiring and for securing
cable assemblies. Most commonly used adhesive backed tie wrap holders have a
tendency of coming undone over time, causing the cable to become lose inside the
chassis. Under shock and vibration conditions, the unfastened cable may rub
against metallic parts causing wear of the insulation. Hence, it is always
preferable to have tie-downs utilizing bridges. Additionally these bridges form
a repeatable path for consistent wiring from one machine to the next.
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3. Chassis Shock Mounting
All drives, passive backplanes and some motherboards are shock mounted to the
chassis. Regardless of industry opinion, years of testing have proven that proper
shock mounting of critical components is necessary to survive harsh environments.
Years of experience with mission critical designs, has allowed us to make this a
hallmark trait of Systel “Extreme Industrial Products”.
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4. Chassis Hold Down Bars and Clamps
All add-in boards and some memory modules are secured through the use of hold
down bars and clamps. Clamps utilize special designed grommets for proper stabilization
of boards as well as the memory modules. When able, Systel designs employ dual hold
down bars to allow securing of full-length boards and provide a secondary role as
chassis stiffeners. All clamps are secured using locking nuts or allen screws.
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5. Cooling and Ventilation
All Systel designs incorporate positive pressure ventilation using ball bearing
fans. The quantity of fans and size are determined according to the chassis volume
and loading of the system with plug in cards and maximum configuration. Temperature
testing is performed at 50C for a minimum of 24 hours with a maximum load as part of
the qualification process. Reusable filters prevent dirt build up on internal
components. Systel’s chassis have greater air flow than most industrial chassis, which
allows better performance under extreme industrial applications.
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6. Chassis RTV
Systel routinely uses electrical Grade RTV (Room Temperature Vulcanizing) silicone
on vibration sensitive components and connectors found on system boards, drives, and
power supplies. This reduces the adverse effect of shock and vibration and increases
long term reliability. This process can be found exclusively in a Systel “Extreme
Industrial Computer”.
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7. Burn In
Prior to final test, all Systel computers go through a 24- hour computer
controlled burn in period at 50 degrees Celsius with full diagnostics to weed out
infant mortality. It has been proven that any marginal electronic components will
probably fail under accelerated conditions, thus increasing the probability of
finding weak or marginal components. Any failed components are replaced and the test
repeated until a pass is accomplished. Results of the burn in test and any failures
are recorded and kept with the machine’s permanent records.
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8. Shipment Packaging
To ensure that all Systel products arrive in perfect condition to our customers,
our engineers have designed packaging using fitted foam inserts with either a heavy
single or double wall cardboard container. Our packaging designs and testing are the
final step to delivering your high performance trouble free product.
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