DAA2 & DAX — P/N 53265:A1 8/24/2011 109
Installation DAA Digital Audio Amplifiers
Digital Audio Ports A and B on Wire Version Boards
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 DAA will be transmitted out both ports.
Figure C.18 Wire the DAA Digital Audio Loop Connections
Refer to “EFA and EFB (Switches 9 and 10)” on page 120 for information on enabling earth fault
detection on the wire DAL.
RXA, RXB, TXA, TXB Fiber Version Board Connections
Fiber ports RXA, RXB, TXA and TXB allow digital communication with DVC fiber boards. When
used with other types of DAL devices (e.g. DAA2, DAX) a DS-RFM or DS-SFM fiber option
module is required on the DAL device. (Refer to Section 5 on page 75.
Refer to the Wiring Guide, p/n 52916ADD, for
acceptable wire types and associated
distance between points.
DVC
DAP A+
DAP A-
REF A
DAP B+
DAP B-
REF B
TBgen3.wmf
Optional Style 7 return
Connections are polarity
sensitive.
Connections are port
sensitive. Always connect
Port A to Port B.
DAPA
DAPB
REF
REF
TB3
TB2
DAP A+
DAP A-
REF A
DAP B+
DAP B-
REF B
DAA 1
DAA 2
DAA 32
DAP A+
DAP A-
REF A
DAP B+
DAP B-
REF B
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.
To Next Page
Loading...
Need help?
General
