110 DAA2 & DAX — P/N 53265:A1 8/24/2011
DAA Digital Audio Amplifiers Installation
The 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
When a fiber DAA is used only with other fiber DAAs (no other type of DAL device, such as a
DAA2, is present on the DAL), the DAL must be composed of either all single-mode fiber, or all
multi-mode fiber. Multi-mode and single-mode can not be mixed on an all-DAA DAL.
Figure C.19 Fiber Digital Audio Loop Connections
FFT Riser Connections
The Firefighter Telephone Riser connections (TB7) provide for the use of firefighter telephones
(FFTs) on an analog network. They are a means of connecting various FFT telephone control
modules and devices, such as FTM-1 modules, AFAWS, FPJ, or RPJ-1 telephone circuits to the
DAA.
The FFT riser may be wired in NFPA Class A or Class B configuration. VeriFire Tools must be
used to select Class A or Class B for trouble supervision. Class B 2-Wire configurations require a
3.9K ohm 1/2 watt end-of-line resistor (P/N R-3.9K).
There are two ways that FireFighter Telephones may be installed on a DAA FFT riser. Both
configurations have a limit of 7 active phones.
TXA
RXA
TXB
RXB
DVC_f_cx.wmf
DAA_f_cx.wmf
DVC
Fiber
Model
TXA RXA
TXB
RXB
TXA RXA
TXB
RXB
Optional
Style 7
return
TXA RXA
TXB
RXB
DAA 1
DAA 2
DAA 32
Consult manufacturer’s
guidelines for minimum radius
of bend for fiber optic media.
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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