35
General Description
Description, Installation, Operations, and Maintenance Manual
Federal Signal www.fedsig.com
Fields
Description
High
Temperature
Yellow, indicates that the temperature of the internal temperature sensor
has exceeded 80
°
C. The module may stop operation if the temperature
continues to rise and reaches a cut-out temperature level.
Load Fault
Yellow, indicates that the latest self-diagnostic test indicated the output
speaker impedance is out of its calibration range, or that the Earth fault was
detected.
Cut Out
Yellow, indicates that the module is in a short term cut out mode, due to
abnormal operating conditions. It tries to return to normal operation after
2 seconds. This cut-out mode also takes place during the initial power up
sequence of the amplifier.
0 dB to
-24 dB LED
Green, indicates the level of the voltage being delivered into the load/
speaker system in 3 dB intervals.
Figure 14 Amplifier Front Panel
2.6.1 Amplifier Front Chassis
The Amplifier Front Chassis is visible when the front cover of the Amplifier Chassis is
removed. (See Figure 15.) The front chassis contains the connections needed for control
communications with the System Controller, to provide amplification and output of input
audio signals, and to support Standby Amplifier operations.
The Amplifier Front Chassis has four RJ45 ports that support input/output of low level
audio and bi-directional RS485 control communications. The input ports are the two
lower ports, and the output ports are the two top ports.
The Amplifier Chassis provides amplified audio through the Amplified Audio Out
interface. More information on the pin-out for this cable is provided in the PAGASYS
GEN II P-A1000-G Technical Information Guide.
Standby Amplifier operation with other Amplifier Chassis in the PAGASYS GEN II
system is supported through the Standby Amplifier Bus interfaces on the Amplifier Front
Chassis. All chassis that are part of a Standby Amplifier group must be interconnected
through these interfaces. The left port is the input for the Standby Amplifier Bus interface,
the right port is the output.
Each Amplifier position has a cooling fan that is controlled by the Amplifier in the
Chassis slot. See PAGASYS GEN II System Manager User Manual for more information