7-Port Isolated USB Hub with SeaLATCH Wins 2007 Tech Award
 • Protects computer from damaging voltage
spikes and surges (up to 1500
VAC)
•
Prevents accidental cable disconnection with
SeaLATCH® locking USB ports
•
Provides full 500mA power to each USB
peripheral
•
LED’s indicate power, connection, and fault
conditions
•
Optional DIN rail and other versatile mounting
options
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PC/104 Adapter Kits
 • Easily
add CompactFlash memory modules or
2.5" hard drives to your PC/104 stack,
via IDE
interface.
• Unique arrangement of mounting holes allows
adapter board to be rotated, which
simplifies
cable routing and improves access to
connectors.
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Tech Lowdown
What is the maximum distance I can run RS-232?
The RS-232C standard specifies a maximum cable length of 50 feet or 2500 pF of
capacitance. A typical off the shelf cable is capable of 9600 bps at 50 feet.
However, data rate and performance decreases as cable length increases. As cable
length increases so does capacitance and the maximum data rate is a direct function
of the capacitance of the cable. It is recommended to use a shielded cable since
this can help to reduce stray capacitance. If running distances over 50 feet,
you should use the lowest capacitance shielded cable available. If you are terminating
your own cable, connect the shield to chassis ground only at one end.
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