Installation | 5
SYSTEM CONFIGURATION
Refer to Figure 4-1 Redundant Line Amplifier Block Diagram and Figure 4-2 RF Assembly Block Diagram for connections.
Table 2-1. External Connections
DESIGNATION
DESCRIPTION
Power Cords
Attach power cords to the rear panel AC power inlets marked “PSA” and “PSB”.
Connect the other end to the power source. Refer to national wiring standards
for the correct connection to the power source.
RF Input
Connect RF input to J4 of the Redundant Amplifier Assembly.
RF Standby Input
Connect RF standby input to J5 of the Redundant Amplifier Assembly.
RF Output
Connect RF output to J6 of the Redundant Amplifier Assembly.
RF Standby Output
Connect RF standby output to J7 of the Redundant Amplifier Assembly.
Remote Interface
Connector
The Remote Interface connector is an optional connection. This allows the
operator to monitor and control the equipment from a remote location.
Summary Alarm
Connector
The Summary Alarm connector is a contact closure status output indicating the
status of the unit and also it’s power supplies.
Ground Lug
Connect the ground lug on the rear panel of the equipment to the Protective
Earth connection of the building.
AMPLIFIER REPLACEMENT PROCEDURE
A replacement amplifier can have different current high and low limits, even if it is otherwise identical to the failed amplifier.
Refer to the amplifier data sheet for it’s ambient current draw, and set the current limits to ±20% of that level.
See the display operation section of this document regarding how to set the current limits.
POWER SUPPLY REPLACEMENT PROCEDURE
Due to interchangeability of Power Supply A and Power Supply B, see Section 1 for power supply positions.
Turn off the power supply you wish to replace.
Remove its line cord.
Turn the black knob counter-clockwise until the power supply comes loose.
Pull the power supply by hand using the same knob as above.
Place the new power supply in the same orientation as the old one. Power supplies in this unit are slotted to insure
proper orientation.
Slide the power supply in by hand.
Turn the black knob clockwise until it is hand tight.
Attach the line cord.
Turn on the power supply and verify proper operation.
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