Notifier DAX User Manual

120 DAA2 & DAX — P/N 53265:A1 8/24/2011
DAA Digital Audio Amplifiers Configuration
C.3 Configuration
C.3.1 Setting the Configuration Switches
EFA and EFB (Switches 9 and 10)
The wire versions of the DAA boards have two
earth fault detection switches for use with Digital
Audio Ports (DAPs) A and B. The switches arrive
from the factory disabled, and may require
resetting if earth fault detection is desired.
Each DAP on a DAA or DVC is electrically
isolated from the other DAP and all other circuitry
on the DAA or DVC.
A DAP with its associated earth fault switch
enabled must be connected to a DAP with its
associated earth fault switch disabled for detection
to occur. Otherwise, either
• no detection will occur (when two connected DAPs have their associated switches
disabled), or
• an earth fault will be generated (when two connected DAPs have their associated switches
enabled).
Refer to Figure C.35.
Figure C.35 Earth Fault Switch Settings for a Wire Digital Audio Loop (DAL)
DAAs may be used on a DAL with other devices that have different earth fault detection (e.g.,
DAA2, DAX). Refer to the DAL Earth Fault Detection appendix in the DVC Digital Voice
Command manual for examples of how to mix devices with different earth fault detection.
4WIRE (Switch 11)
The FFT riser may be wired in a Class A four-wire or
a Class B two-wire configuration. For Class A
installations, enable the switch. For Class B, disable
the switch.
VeriFire Tools programming must be set the same as
this switch.
Figure C.34 EFA/EFB
Enable/Disable
SW9 and SW10 in DISABLE position
To enable, push the switch towards EN.
DIS
EN
EFA
DIS
EFB
EN
SWgen.wmf SWgena.wmf
DVC
EFA EN
DAPA
DAPB
DAA
DAA
DAPA
DAPB
DAPA
DAPB
DAA
DAPA
DAPB
Optional Style 7 return
For specific DAP wiring instructions refer to “Digital Audio Ports
A and B on Wire Version Boards” on page 109.
Twisted-pair wire.
EFB DIS
EFB DIS
EFA EN
EFB DIS
EFA EN
EFB DIS
EFA EN
Figure C.36 4WIRE Enable/Disable
SW11 in
enabled
position.
To
disable,
push the
switch
towards
DIS.
DIS
EN
4WIRE

Notifier DAX Specifications

General

Brand	Notifier
Model	DAX
Category	Amplifier
Language	English