Alpha Technologies AlphaNet Series External DOCSIS - Manual (Page 11)

11 745-838-B2-001 Rev. A
2.0 Installation, continued
2.1 General Installation Information for Supported Power Supplies, continued
2.1.1 Transponder Placement
Place the transponder on the shelf inside the cabinet next to the power supply. •
Do not place the transponder on top of the power supply.
Maintain access to the front of the transponder to ease the connection of the •
cables.
Ensure the cabinet door can close without damaging the cables. •
Route and tie-wrap the cables in an orderly manner. •
2.1.3 Confi guring the Interface Card
Each power supply contains an interface card which provides the common
communication layer between the power supply and the transponder. The settings
needed for your power supply are located in Section 3.0, "Installation Instructions
for Specifi c Power Supplies".
2.1.4 Wiring the Battery Harness
2.1.2 Disconnecting the DC Power
Place the DC breaker in the OFF position.
CAUTION!
Backup capability is suspended with the DC breaker in the OFF position.
Prior to connecting the cables to the transponder, make all harness connections •
to the batteries and interface connectors on the power supply. See the battery
diagrams for your specifi c power supply.
Double-check all connections. Incorrect connections may damage the •
transponder or the power supply. Correct connections at the batteries are
extremely important to the proper operation of the power supply.
Ensure that the high current carrying cables and jumpers (heavy gauge black •
and red cables) remain in direct contact to the battery terminals.
Never place the transponder battery harness lugs between the current carrying •
jumper/cable lugs and the battery terminals. See the power supply installation
manual for more information.
In some cases there are more battery harness leads than there are batteries. •
Connect all unused lugs to the same terminal as the V(-) lead, the same terminal
where the heavy gauge black cable from the inverter is connected. This prevents
stray voltages from being detected by the transponder.
CAUTION!
Incorrect connections may damage the equipment and invalidate the warranty. Double-check all connections.
NOTE:
Depending on the type of enclosure and the power supply you are using, it may be necessary to orient the
Service Power Inserter (SPI) vertically to provide space for the transponder. Re-torque the SPI to spec (130
in/lbs) if repositioning becomes necessary. This is important, as the output neutral is not tied to ground until
connected to the SPI /enclosure.