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Configuring the Amplifier Chassis
PAGASYS GEN II (P-SYS-G)
Federal Signal www.fedsig.com
• You can designate an Amplifier Card as a Standby Amplifier. Install the Standby
Amplifier in physical slot 4 of an Amplifier Chassis.
• Each module/card can communicate with a System Controller through two RS485
communication channels, for redundancy. In absence of a System Controller, the
amplifier defaults to a standalone operation.
• Each amplifier card may be configured to a different audio input channel or they can
share channels.
• Each amplifier card has a separate output wire pair within the output cable, but two
output pairs can be externally bridged to produce a 600 W output.
• Each amplifier card has a Standby relay, which can reroute its output speakers to a
standby Bus. This relay is powered and controlled by the adjacent amplifier card, so
that a faulty amplifier card can be rerouted.
• Each amplifier card has its own indicator LED lights and a power button.
8.2 Powering up/Powering down
To power up the Amplifier Chassis:
• The amplifier, all four cards (modules), powers up automatically upon connection of
power.
To power down the Amplifier Chassis:
• Power down an amplifier card by pressing the power button and holding it for three
seconds. Another half second press of the power button restores the power. The power
button must be enabled by the System Manager, as it is disabled by default on the
System Controller.
• You can put an amplifier card, or the whole amplifier, to sleep by a system command.
This condition stops the output bridge working and puts the amplifier into a low-
current consumption mode.
8.3 Normal Operations
The amplifier card has a self-test capability that checks its own performance.
LEDs
Description
Green NORMAL LED
Indicates all parameters are normal.
Yellow LED lights
Failures are reported by communications channels.
Green NORMAL LED, steady on Indicates that the amplifier card is capable of
delivering audio output power. Blinking LED
indicates that the card is capable of delivering
output, but a self-diagnostic detected a value out
of calibration, such as a mild overload or load
impedance out of calibration.
NORMAL LED turning off
Indicates a severe abnormality.