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Optical Isolation Provides Protection
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Isolation is important when equipment
is connected far from the host system or when two devices are referencing
different ground planes. The difference in potential between the two locations
often causes a current, or ground loop, which can generate noise or data
corruption. Optically isolated devices provide a physical separation
between the different potentials that results in robust communications
and prevents damage to electrical
equipment. Sealevel offers several isolated serial products.
- The 4103 is a 1-port Ethernet device that connects a single RS-232,
RS-422, or RS-485 serial port to your Ethernet network. The device supports
data
rates to 230.4K bps and includes a Reed relay output and optically
isolated input
for remote control and monitoring of real world devices.
- The 2213 is a 2-port optically isolated USB serial device that is configurable
for RS-232, RS-422, or RS-485 with maximum data rates to 921.6K bps. Single-port
isolated USB serial devices are 2113, 2103, and 2104.
- The 7108 is a Low Profile PCI, optically isolated serial port configurable
for RS-232, RS-422, or RS-485 with data rates to 921.6K bps. For standard
PCI slots, order the 7108S.
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Tech Lowdown – Best Practices in Electrostatic
Discharge
 Electrostatic Discharge (ESD), a common occurrence in electronics
and other industries, is the rapid transfer of static electricity between
objects. Often tribocharging – the bringing together and separating
of materials – is to blame for the build up of electrical charges.
Damage can occur at such low voltages that it is impossible to detect in
electrical equipment.
Electrostatic Protective Areas (EPA) are work areas
designed to eliminate built-up charges that may cause damage to electronic
products. Information
on designing an EPA can be found on the IEC and ANSI websites. Using antistatic
devices – bags, clothing, mats, straps and chemical agents – can
help to prevent damage to electronic devices. ESD-safe packing materials,
ionization systems and humidity control can be used to monitor and/or neutralize
electrically charged areas.
Sealevel Systems utilizes ESD safety policies to prevent
electrostatic damage. Antistatic smocks along with wrist and ankle straps
are required within designated
areas. All of our boards are packed in ESD-safe materials prior to shipping.
Our manufacturing and engineering departments have state-of-the-art antistatic
floor tiles. Sealevel takes every precaution to eliminate the potential for
ESD damage.
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