CalAmp ITC 220 Installation Manual - page 16
ITC 220 Base Station Transceiver Installation Guide PN 133991 Rev. A
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maximum power of the Base transmitter can be used. If the value is less than 48.75 dBm, then the transmitter output
power should be reduced to the net value. Example for the 50 W ERP case: Antenna gain = 8 dBi, feedline and
connector loss = 2 dB. Assuming no other losses, the transmitter power output limit = 49.15-8+2 = 43.15 dBm PEP or
20.7 W PEP. In this case, the Base RF output power should be adjusted to 20.7 W PEP or less.
If the calculated transmitter power limit is less than the minimum Base rated power of 10W PEP = 40 dBm PEP, then an
external RF attenuator would be inserted in the feed line to increase the loss between transmitter and antenna to
achieve compliance.
5 ROUTINE MAINTENANCE
The Base Station Transceiver requires the following routine maintenance.
Remove dust and obstructions from heat-sink fins.
Ensure that the unit is not subjected to excessive heat from adjacent equipment.
Make sure that the unit is securely mounted and supported.
Restrain cables to prevent stress on connectors.
Make sure that the SD memory card (CIM) door is securely closed.
Keep the indicator-LED panel dust-free and LEDs viewable.
Check fan operation and make sure the fans are not obstructed.