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Configuring the Amplifier Chassis
Description, Installation, Operations, and Maintenance Manual
Federal Signal www.fedsig.com
LEDs
Description
Nine green dB LEDs
Show the level of output, as referenced to 100 V
rms
.
A line level audio signal input must be connected
to the selected input channel.
Blue SELECTED LED
Indicates that the output of an amplifier card
is connected to the output header. Connect
the speaker system/load to the 100 V
rms
line
connections.
8.4 Standby Amplifier Operations and Routing
In a PAGASYS GEN II system, amplifier-module redundancy should be provided
by the use of Standby Amplifiers. A Standby Amplifier can provide redundancy for
an Amplifier Chassis, or for any Amplifier Chassis that is connected to the chassis
containing the Standby Amplifier by connecting the chassis using a standby cable. If a
Standby Amplifier is needed, the Standby Amplifier must be positioned in slot four of the
Standby Amplifier Chassis, and the jumpers on the Amplifier Signal Backplane for this
chassis must be configured to standby chassis configuration. See Figure 51 for a view of
the jumpers configured to support Standby Amplifier. If a chassis is not going to support
a Standby Amplifier, or the chassis is being configured to support ISMT, the jumpers
should be removed from the Amplifier Signal Backplane.
Figure 54 Jumpers configured to support a Standby Amplifier