CalAmp ITC 220 User manual - page 19
ITC 220 Base Station, Locomotive & Wayside Radio Transceiver Field Service Guide PN 0046300120 Rev. A
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FOLLOW ESTABLISHED SAFETY GUIDELINES
Your employer has created safety guidelines that apply to your work environment and tasks. Please follow them. If you
have questions about general on-the-job safety concerns, please consult your employer’s established safety guidelines.
2.1 ELECTRICAL SAFETY
To reduce the risk of electric shock:
Follow your employer’s established electrical safety guidelines.
Disconnect power from the transceiver before removing the cover.
Be aware that removing the cover of the radio transceiver may expose you to dangerous voltages or other risks.
Avoid making internal adjustments to the radio transceiver when you are alone.
Avoid contact with a radio’s electrical components. Electric shock from voltages present with the radio transceiver
are potentially fatal.
Reassemble radio transceivers correctly. Incorrect reassembly of a radio transceiver can cause a harmful electric
shock to anyone who handles it.
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IMPORTANT INFORMATION FOR THE USER
3.1 TRANSMITTER WARM-UP PERIOD (BASE STATION TRANSCEIVER ONLY)
The transmitter of the Base Station Transceiver uses a precision oven-controlled crystal oscillator (OCXO). The OXCO
warm-up period is one minute minimum after application of input power before any transmission should commence.
Locomotive and Wayside Transceivers use temperature-compensated crystal oscillators (TCXO), which do not require
warm-up time before the transmitter can be used.
3.2 LIMITING RF EXPOSURE
Caution – Please refer to the RF Energy Exposure Guide for ITC 220 Base Station, Locomotive, and Wayside
Transceivers Installed in Vehicles or at Fixed Sites that is packaged with each transceiver for specific
information regarding safe distances that must be maintained between personnel and energized
transmitting antennas.
The information in the RF Energy Exposure Guide for ITC 220 Base Station, Locomotive, and Wayside Transceivers
Installed in Vehicles or at Fixed Sites (RF Energy Exposure Guide) is determined form FCC and Industry Canada rules
that, when followed, limit human exposure to radio frequency energy to acceptable levels. Note that although
transceivers and antennas are expected to be sited, installed, and maintained only by professionals in a controlled-
exposure environment, the RF Energy Exposure Guide lists the larger lateral safe distances for an uncontrolled
environment. Obeying these limits will protect both railroad employees and the general public.
Radio transceivers are intended to be operated with a fixed antenna in an Occupational/Controlled Exposure
environment per FCC OET 65 or Controlled Use Environment per IC RSS-102. The Maximum Permitted Exposure (MPE)
limit for devices in the presence of the general public in the 100-300 MHz range is 0.2 mW/cm
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= 2 W/m
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vs. 10 W/m
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in a controlled-exposure environment.