HPOD C-, X-, Ku-Band High-Power Outdoor Amplifier
Revision 9
Preface
iii
MN/HPOD.IOM
Electrical Safety Notice
CAUTION – Neutral Fusing – Double pole/neutral fusing is used on the prime
power supply input.
This equipment has been designed to minimize exposure of personnel to hazards. For further
information, contact Comtech 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 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 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
additionally recommends the installation of surge suppression on the RF and IF cables. One
source of these suppressors is PolyPhaser (
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.
Содержание HPOD
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Страница 161: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...