DAA2 & DAX — P/N 53265:A1 8/24/2011 65
DAX Configuration DAX Digital Audio Amplifiers
3.3 DAX Configuration
3.3.1 Setting the Configuration Switches
EARTH FAULT (Switch 5) - DAX-35 Only
The DAX-35 has a ground fault switch that can be set
to EN (enable) to detect ground faults on the board’s
external wiring (except DAL Port A) and on a DAL
(digital audio loop) segment (Port B). Port A is
isolated, and ground fault detection on Port A will be
performed at the other end of the connection. A general
ground fault error for the device will be generated
when a ground fault is detected.
Refer to the DAL Earth Fault Detection appendix in the
DVC Digital Voice Command manual, as well as “Battery Sharing” on page 53, for more
information on how to set this switch.
Address Switches
A maximum of 32 DAL devices
may be connected to one DVC.
Each device must have its own
address. Refer to Figure 3.26 for
an illustration of address settings
and to Figure 3.2 on page 47 for
the location of the switches.
Addresses one (1) through 32 may
be used for digital communication.
Address 00 and addresses above 32 will generate a DAX trouble.
The default address setting for the DAX as it arrives from the factory is 00.
3.3.2 Programming
The DAX is programmed through VeriFire Tools. Refer to the DVC Digital Voice Command
manual as well as the VeriFire Tools CD and Help file for information on how to create, prioritize
and download audio messages, create system equations for message distribution, and set system
parameters.
3.4 DAX Operation
3.4.1 Volume
The volume of audio messages is determined through FACP/network annunciator progrmaming
and VeriFire Tools Read Status Service Form.
3.4.2 Trouble Messages
DAXs will send trouble messages to the DVC through the wire or fiber DAL (Digital Audio Loop).
The DVC in turn sends them to the panel or network annunciator. Refer to the System Troubles
appendix in the DVC Digital Voice Command manual for a list and description of system troubles.
Figure 3.25 Earth Fault
Switch shown in
enabled position.
Figure 3.26 DAX Address Switches
DAX Address set to 14
The SW2 arrow
points to one
(1). Tens switch
set to one (1).
The SW3 arrow
points to four (4).
Ones switch set
to four (4).
DAA Addrswtchs.wmf
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