NEC (National Electrical
Code) Standards
A Note for the Cable Television (CATV) Installer
This reminder is to call the CATV system installer’s atten-
tion to Article 820-40 of the NEC that provides g idelines
for proper gro nding and in partic lar, specifies that the
cable gro nd shall be connected to the gro nding system
of the b ilding as close to the point of cable entry as prac-
tical.
Antenna Grounding Outside the House
If an o tside antenna is connected to the receiver, be s re
the antenna system is gro nded so as to provide some pro-
tection against voltage s rges and b ilt- p static charges.
Article 810 of the National Electrical Code, ANSI/NFPA
70, provides information with regard to proper gro nding
of the lead-in wire to an antenna-discharge nit, connec-
tion to gro nding electrodes, and req irements for the
gro nding electrode. See diagram below.
Cable TV Coaxial Cable, Satellite Dish Cables and Tele-
vision Antennas should be grounded BEFORE the point o
entry into the house.
Always observe proper antenna or satellite dish ground-
ing techniques. When lightning strikes, there is always the
possibility that your antenna or dish (mounted high on the
roo ) can become a conduit or lightning and electrically
damage any equipment to which it’s connected. Addition-
ally, proper grounding o ers sa ety to the people using the
audio/video system in the event o an electrical problem.
Unpacking the PRE-1
All Sherbo rn preamplifiers are do ble boxed to s rvive
the rigors of long distance shipping and arrive to yo
ndamaged. The o ter box may show wear and tear, b t
this is no ca se for alarm. The o ter box’s p rpose is to
protect the inner box. If the inner looks heavily damaged,
and yo are concerned abo t damage to the preamplifier,
please call Sherbo rn Technical S pport at 615-791-4046.
Inside the laminated inner box, the preamplifier is sec rely
seated between to two reinforced pieces of high-density impact
foam. At first glance, the cardboard backing on the foam
may give the appearance of a third box, b t it is easily lift-
ed to reveal the preamplifier, which is wrapped in static
free plastic. The plastic sheeting is t cked nderneath the
preamplifier and sec rely taped. It is recommended that
the plastic sheeting be removed after the amp is lifted o t
from the box.
The bottom piece of foam is molded to fit tightly against
the preamplifier, b t there is a recessed area on each side,
allowing yo to get yo r hands nder the preamplifier and
lift it o t of the box.
Inventory: Incl ded with yo r PRE-1 preamplifier
sho ld be an IEC Class 1 two prong power cord and this
man al.
It is important to save all the packing materials and the boxes in
case yo r PRE-1 ever needs to be moved or shipped back
to the factory for service.
Make s re yo keep yo r sales receipt. It is the only way
for Sherbo rn to establish the d ration of yo r Limited
Warranty and it may come in sef l for ins rance p rpos-
es.
Re ording the Serial Number
Please read the serial n mber located on the rear panel
and record it below along with the date of p rchase.
Model PRE-1
Serial N mber ____________________
Place of P rchase ____________________
Date of P rchase ____________________
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