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HPOD C-, X-, and Ku-Band High-Power Outdoor Amplifiers
Preface
information, contact Comtech EF Data, Customer Support Department. The operators and
technicians must:
•
Know how to work around, with, and on high voltage equipment.
•
Exercise every precaution to ensure personnel safety.
•
Exercise extreme care when working near high voltages.
•
Be familiar with the warnings presented in this manual.
Installation Guidelines Regarding Power Line Quality
Comtech EF Data has become familiar with the varying quality of the AC
power grid around the world. Observing the following installation guidelines
should help ensure a reliable installation.
•
Grounding: The HPOD provides a grounding terminal to allow you to ground the HPOD to
the antenna's grounding network. All components installed at the antenna should be
grounded to a common grounding point at the antenna.
•
Surge suppression: High voltage surges can cause failure of the power supply. The cause of
such surges typically includes circuit switching on the main AC power grid, erratic generator
operation, as well as lightning strikes.
While the HPOD features built‐in surge suppression, if installation is to be in a location with
questionable power grid quality, Comtech EF Data recommends installation of additional
power conditioning/surge suppression at the power junction box.
Lightning strikes on or around the antenna will generate extremely high voltages on all
cables connected to the HPOD. Depending on the severity of the strike, the HPOD's internal
surge protection combined with the recommended external suppression may protect the
HPOD's power supply. However, if installation is in an area with a high probability of
lightning strikes, Comtech EF Data additionally recommends the installation of surge
suppression on the RF and IF cables. One source of these suppressors is PolyPhaser
(www.polyphaser.com).
•
Electrical welding: If welding needs to take place at the antenna, disconnect all cables from
the HPOD except for the ground wire. Cap all RF connections with terminations. This will
prevent damage to the input/output circuitry of the HPOD.
xi
Revision 6
MN/HPOD.IOM
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