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Lightning can cause electromagnetic surges and can damage your equipment.
Even if lightning strikes a nearby power line that feeds your site, a surge in
voltage can occur and cause electromagnetic energy. As a precaution during
lightning storms, do not connect or disconnect cables.
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Always make sure that your cables do not exceed recommended lengths or are
not exposed to the outside environment. In either case, the likelihood of lightning-
related damage increases.
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Make sure that the SafeGuard Controller is grounded securely. A voltage surge
that occurs in the power lines may affect the grounding system, especially if the
grounding system has a very low resistance. If an electromagnetic surge occurs,
consult experienced electrical surge suppression personnel. They will be able to
help your site recover from the effects of the surge.
Electromagnetic Interference Prevention
Electromagnetic interference (EMI) is any electromagnetic disturbance that interrupts,
obstructs, or otherwise degrades the effective performance of electronics equipment.
Interference of this nature refers to the impact it has on the equipment, thereby affecting
performance of other equipment. Because of EMI, power surges can cause an electrical
hazard or damage signal drivers and receivers. As a precaution against EMI-related
damage, store all X-ray equipment, hand-held transceivers, and microwave, radio, or
television transmitters in a facility that is different from the one in which the SafeGuard
Controller is installed. To resolve problems with continual high levels of EMI, consult
experienced EMI personnel.
Radio Frequency Interference Prevention
Radio frequency interference (RFI) is high-frequency electromagnetic radiation that
upsets the electromagnetic environment. RFI is also known as electromagnetic
interference (EMI), but EMI actually encompasses a wider range of frequencies.
If your cables are improperly installed, they can emit RFI. At all times, make sure that
your system cables are properly and securely installed, and do not exceed the
recommended lengths. If your cables exceed the recommended lengths, use high-quality
cables with proper grounding. Using shielded cables helps reduce RFI radiation. If
electromagnetic interference persists at your site, consult experienced RFI and EMI
personnel.
Electrostatic Discharge Precautions
Components used in the SafeGuard Controller and SFP modules are sensitive to damage
from static electricity. A damaging electrical charge can be generated by handling plastic
or foam packaging material. The effect of electrostatic discharge (ESD) damage can be
OmniAccess SafeGuard Controller Installation Guide
Appendix B: Safety and Regulatory Compliance
43
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