Comtech EF Data TRP500 User Manual
Page 19
TRP500-4450 C-Band Outdoor Amplifier
Revision 1
Preface
MN-TRP500
ix
Installation Guidelines Regarding Power Line Quality
IMPORTANT
Comtech EF Data has become familiar with the varying quality of the AC
power grid around the world. The following offers some installation guidelines
that should help ensure a reliable installation.
• Surge suppression: High voltage surges can cause failure of the power supply. These surges
are typically caused by circuit switching on the main AC power grid, erratic generator
operation, and also by lightning strikes. While the TRP500 does have built in surge
suppression, if the unit will be installed in a location with questionable power grid quality,
Comtech EF Data recommends installation of additional power conditioning/surge
suppression at the power junction box.
• Grounding: The TRP500 provides a grounding terminal. This is provided to allow the user
to ground the amplifier to the antenna’s grounding network. All components installed at the
antenna should be grounded to a common grounding point at the antenna.
• Electrical welding: If welding needs to take place at the antenna, disconnect all cables from
the TRP500 except for the ground wire. Cap all RF connections with terminations. This will
prevent damage to the input/output circuitry of the amplifier.
• Lightning: Lightning strikes on or around the antenna will generate extremely high voltages
on all cables connected to the TRP500. Depending on the severity of the strike, the
amplifier’s internal surge protection combined with the recommended external suppression
may protect the TRP500’s power supply. However, if the installation will be in an area with a
high probability of lightning strikes, Comtech EF Data recommends the installation of surge
suppression on the RF and IF cables. One source of these suppressors is PolyPhaser