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Application Story
• New
Panel Mount PC
• FAQ:
Watchdog Timer
• STEALTH PHILOSOPHY
QUOTE OF THE MONTH
Computers make it easier to do a lot of things, but most of the things
they make it easier to do don't need to be done.
-Andy Rooney
(1919 - ) 60 Minutes
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Welcome
to the WARRIOR
eVIEW the newsletter featuring specialized computers
and peripherals brought to you by Stealth Computer Corporation. Each month
we’ll provide useful insights, application stories and new product
announcements to keep you informed.
Feel free to forward WARRIOR eVIEW to a
friend or view our past issues in the
Archive.
To modify your subscription, please see Subscription Services below.
Application Story –Stealth Rackmounts- Peak Performance!
Measuring the Sky Image Quality at Cerro Pachón in central Chile
(elevation 8895 ft/2737 m)
 The Gemini Observatory is an international partnership comprised of two
8.1-meter telescopes (each telescope has a main mirror over 26 feet
across.) One telescope is located on
Hawaii's Mauna Kea, and the other on
Chile's Cerro Pachón. The name Gemini comes from the mythological twins,
whose stars are visible to both telescopes.
With the advanced technology and unprecedented capabilities of Gemini, the
sky's the limit! Included in Gemini's studies are regions where stars and
planets are forming deep within cool gas clouds. In many instances, the
Gemini telescopes outperform even the Hubble Space Telescope in both
clarity and data collection.
In Astronomy, the clarity with which stars and other celestial objects can
be observed is known as seeing. The thermal motion of the air and thin
clouds are factors that can affect the seeing. In Astronomy, determining
the seeing is vital as it is a deciding factor what type of observation
can be carried out.
 Operating as part of the control systems to determine the seeing, the
Stealth SR-1500 Rack Mount PC and the
FR-1000 slim rack LCD were selected
for their high availability performance as well as their space saving
dimensions. (1.75” high) Both units take only
2U
of rack space total, thus leaving enough room for a CCD controller, UPS, network equipment and
future enhancements to the system. Located atop a mountain at 2700 metres
the environmental conditions are far from being ideal. The system has to
run continuously with little maintenance, and use as little space as
possible in the weatherproof rack.
The system has run flawlessly since its installation in April 2004.
For additional information on the Gemini Observatory navigate to the
website at: http://www.gemini.edu
[ FOR MORE INFORMATION ]
New Product: Model: PM-3500B Panel/Wall
Mount PC
Powerful semi-rugged
versatile computer with expansion capability...
 The
PM-3500B Panel/Wall Mount Computer system is a new addition to
Stealth’s family of high performance Industrial/Commercial Computer
systems. The Stealth PM-3500B is a multi-purpose system designed for
semi-rugged commercial and industrial applications. The versatile design
offers three mounting arrangements; Panel, Wall or Bench top making them
ideal for Control, Kiosks, Plant Floor and a range of other applications.
The
PM-3500B is an Intel Pentium-4 based PC that offers 3 available PCI
expansion slots for user add-in cards. All systems are built using
industry standard micro ATX main boards. Since the ATX design also offers
an open AGP slot systems can be configured with a range of high-end
graphics adapters giving unprecedented power in a little box PC.
PM-3500B
Features:
- Powerful P4 Processors up to 3 GHz +
- Industry Standard Micro ATX Mainboards
- 3-PCI Expansion Card Slots Available
- 1-AGP Slot for High End Video Adapters
- Rugged Steel Chassis Design with Front Door
- Panel & Bench and Tower designed Chassis
The PM-3500 offers PCI and AGP expansion slots for add-in cards. DC
power, RAID, and various storage options are available. Built the way you
want it and priced to meet your budget!
For additional technical specifications please check the
PM-3500B
Data Sheet.
[
FOR MORE INFORMATION ]
FAQ: What is a watchdog timer?
Move over rover let the watchdog take over
A watchdog timer is a piece of hardware, often built into a
Single Board
Computer (SBC) or embedded PC that can cause a reset when it determines
that the system has either hung up or is no longer executing the correct
sequence of code.
A properly designed watchdog mechanism should, at the very least, catch
events that hang the system. In electrically noisy environments, a power
glitch may corrupt the program counter, stack pointer, or data in RAM. The
software could crash, even if the code is completely bug free. This is
precisely the sort of transient failure that watchdogs will catch.
Bugs in software will cause systems to hang, therefore it is better to fix
the root cause rather than relying on a watchdog timer. In complex
embedded systems it may not be possible to guarantee that there are no
bugs, however by using a watchdog you can prevent those bugs from hanging
the system indefinitely.
Conclusion
A good watchdog system requires careful consideration of both software and
hardware. Make certain to decide early on in the design process how you
intend to use it and when a failure is detected you will reap the benefits
of a more robust system.
[ FOR OTHER
STEALTH FAQ's CLICK HERE ]
 STEALTH COMPUTER CORPORATION
Our Philosophy
We
started our business quietly in 1990 because there was an unfulfilled
need in the marketplace for computers and peripherals that could survive
the daily battlezone conditions of the shop floor. With our engineering
backgrounds in process control, instrumentation and factory automation
we knew first hand what was really needed and we possessed the experience
and empirical knowledge to design and create ruggedized computer products
to fill that void.
Stealth
Computer Corporation is continuing to grow from our basic root philosophy
and is evolving as a leading provider of premium rugged computer systems
and peripherals to a wide range of industrial, commercial and scientific
users, worldwide. Stealth is an ISO 9001:2000 Certified Company.
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