Troll Systems Corporation SLLBTX646501 用户手册

User Manual

8

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Calculations Steps

1. [P] RF power input. Watts to milliwatts = Watts * 1000

2. [G] Antenna gain dBi. Numeric gain = Antilog (dBi/10)

3. [EIRP] Multiply P * G

Always verify that electrical power is disconnected and that applicable safety procedures 
have been followed before doing maintenance on any electrical/electronic equipment. 
High voltage electrical energy is stored in some electrical equipment (electrolytic 
capacitors, UPS batteries, etc.) even after the source of primary external power has been 
disconnected. Always remove external power, deactivate equipment, or discharge the 
potential to ground (when applicable) before working on the equipment.

If a high-potential insulation test is required, follow the procedures and precautions 
outlined in the appropriate National Electrical Manufacturing Association (NEMA) 
standards. Check with the area supervisor if unfamiliar with these standards, specific 
equipment, or procedures.

When troubleshooting a system with electrical power applied, first verify that all personnel 
in the hazard area are advised, that the equipment is tagged, and/or that an assistant is 
posted at the point of power control.

Potentially lethal voltage/current is present throughout 
many electrical installations. Maintenance personnel 
shall employ positive power lockout devices and post all 
required warning tags/signs when applicable to ensure 
that no unauthorized application of power can occur 
during maintenance. Failure to heed this warning could 
result in serious injury or death by electrocution.