![Federal Signal Corporation PAGASYS GEN II P-SYS-G Description, Installation, Operations And Maintenance Manual Download Page 36](http://html.mh-extra.com/html/federal-signal-corporation/pagasys-gen-ii-p-sys-g/pagasys-gen-ii-p-sys-g_description-installation-operations-and-maintenance-manual_548461036.webp)
36
General Description
PAGASYS GEN II (P-SYS-G)
Federal Signal www.fedsig.com
on amplifier fan cooling operation.
Figure 15 Amplifier Front Chassis
6 Channels of low-level
audio and 2 channels of
RS485 data
IN
OUT
OUT
Amplified
Audio Out
IN OUT
Standby
Amp Bus
2.6.2 Amplifier Signal Backplane (20000154)
The Amplifier Signal Backplane (20000154) provides control interfaces for the Amplifier
Chassis. (See Figure 16.)
The Amplifier Signal Backplane is located in the front bottom of the Amplifier Chassis.
It has four sets of white and black headers labeled SLOT 1 to SLOT 4 that serve as
connections for the four amplifier cards. The white 16-pin headers are for audio power
outputs, while the 24-pin black headers are for audio inputs and communications. A fifth
white header on the right side is for an optional ISMT module card. The connections on
the bottom are visible on the front of the chassis and are described with the Amplifier
Chassis.
NOTE
: The service model for the Amplifier Signal Backplane is K20000154.
Figure 16 Amplifier Signal Backplane (20000154)