LPOD-R Outdoor Amplifier / Block Up Converter (BUC)
MN-LPODR
Preface
Revision 3
xiv
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Exercise extreme care when working near high voltages.
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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.
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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 LPOD-Rdoes have built in surge suppression, if the unit is to 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.
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Grounding
– The LPOD-Rprovides a grounding terminal. This is provided
to allow you to ground the LPOD-R to the antenna’s grounding network.
All components installed at the antenna should be grounded to a
common grounding point at the antenna.
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Electrical welding
– If welding needs to take place at the antenna,
disconnect all cables from the LPOD-Rexcept for the ground wire. Cap all
RF connections with terminations. This will prevent damage to the
input/output circuitry of the LPOD.
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Lightning
– Lightning strikes on or around the antenna will generate
extremely high voltages on all cables connected to the LPOD. Depending
on the severity of the strike, the LPOD’s internal surge protection
combined with the recommended external suppression may protect the
LPOD’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 (www.polyphaser.com).
