DAA2 & DAX — P/N 53265:A1 8/24/2011 29
DAA2 Installation DAA2 Digital Audio Amplifiers
Digital Audio Ports A and B, Wire Connections
Digital Audio Ports A and B (DAP A and DAP B) allow digital communication with the DVC over
the Digital Audio Loop (DAL); Amplifier programming from the DVC; control, audio, trouble,
address and firefighter telephone data; and live voice paging can be communicated through these
ports. They may also act as repeaters, in that what is received at one port is transmitted out the
other. Events generated at the DAA2 will be transmitted out both ports.
Figure 2.14 Wire the DAA2 Digital Audio Loop Connections
Digital Audio Ports A and B, Fiber and Wire/Fiber Connections
DAA2 boards are wire, but may be converted partially or fully to fiber boards with the use of fiber
option modules DS-FM and DS-SFM. (Refer to Section 5.3.1, “DAA2 Installation”, on page 77 for
information on installing fiber option modules.) The fiber, or wire/fiber cabling between these ports
provides a Digital Audio Loop (DAL) for programming; alarm, control, trouble, automatic audio
messages, address and firefighter telephone data; and live voice paging communications.
Figure 2.15 illustrates an example of how a DAL can be formed using mixed wire and fiber
connectors.
DVC
Refer to the Wiring Guide, p/n 52916ADD, for acceptable wire types
and associated distances between ports.
Do not splice a cable. Splicing will degrade the signal, and the
recommended distance will no longer apply.
DAPA, TB3
DAPB, TB2
REF
DAA2 #1
Optional Style 7 return
Connections are polarity
sensitive.
Connections are port
sensitive. Always connect
Port A to Port B.
DAA2 #2
DAA2 #32
TB2
TB2
TB2
TB3
TB3
TB3
DAP A
REF
DAP A
REF
DAP A
REF
DAP B
REF
DAP B
REF
DAP B
REF
REF
NOTE: Digital Audio Ports A and B must be wired in Style 4 or Style 7 configuration. Do not wire
them in bus configuration.
NOTE: Style 4 configuration must be installed in accordance with the requirements for
survivability from attack by fire in the National Fire Alarm Code, NFPA 72.
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