Comtech EF Data SPOD PS 1, PS 1.5, and PS 2 C-, X-, or Ku-Band - Manual (Page 15)

SPOD C-, X-, or Ku-Band Outdoor Amplifier MN-SPODPSX
Preface Revision 1
xiii
Electrical Safety Notice
CAUTION – Neutral Fusing: Double pole/neutral fusing is used on the prime power
supply input.
This equipment is designed to minimize exposure of personnel to hazards. For further
information, contact Comtech EF Data Product Support. 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.
• 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, as well as lightning strikes. While the SPOD does have built in surge suppression,
if unit installation occurs in a location where there may be questionable power grid quality,
Comtech EF Data recommends installation of additional power conditioning/surge
suppression at the power junction box.
• Grounding: The SPOD provides a grounding terminal. This is provided to allow grounding of
the SPOD to the antenna’s grounding network. All installed components 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 SPOD except for the ground wire. Cap all RF connections with terminations. This will
prevent damage to the input/output circuitry of the SPOD.
• Lightning: Lightning strikes on or around the antenna will generate extremely high voltages
on all cables connected to the SPOD. Depending on the severity of the strike, the SPOD’s
internal surge protection combined with the recommended external suppression may
protect the SPOD’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).