ATEIS IDA8 - Manual (Page 173)

Product Features 173
© 2012 ATEÏS
Zone Amplifier Inputs:
There are 8 sets of Zone Amplifier Input in RU-MAIN, each set consist of three connectors, allow
system to do one channel of zone amplifier redundancy, the "N" is the number of set:
P_ZONE N
Connect to N th channel of primary audio processor's zone amplifier input connector.
ZONE N
Connect to N th channel of normal amplifier's audio input connector.
S_ZONE N
Connect to N th channel of secondary audio processor's zone amplifier input connector.
EXP_OUT(Active Control Expansion Output):
This port output logic signal to next RU devices to synchronize redundancy state which tells primary
or secondary is active.
Fault:
This port is a logic contact, which is normally closed, opened if the unit is set to be slave(refer to
Master/Slave Switch of later item), and a short or open is detected on S_WD(Secondary Watching
Dog) port.
S_ACT(Secondary Active Output):
Output a logic signal to indicate secondary audio processor is active.
S_WD(Secondary Watching Dog):
RU-Main/PDC/CTL determine active system will be primary or secondary IDA8 network by monitor
input logic contacts P_WD and S_WD, The basic philosophy is that master RU monitor the signal
coming from primary and secondary audio processor to decide which one can be active, and also
pass the decision to next RU through EXP_OUT port. When RU is set to be master, it monitor both
P_WD and S_WD for choose which IDA8 network will be active, but if RU is set to slave, it only
monitor S_WD to determine which one can be active.
P_ACT(Primary Active Output):
Output a logic signal to indicate primary audio processor is active.
P_WD(Primary Watching Dog):
RU devices monitor this logic signal for determining active audio processor, please refer to item
"(S_WD)Secondary Watching Dog".
Master/Slave Switch:
A dip switch to set RU-MAIN be master or slave. The difference between master and slave please
refer to item "(S_WD)Secondary Watching Dog".
Expansion Power Supply:
Output 24V DC power to next RU-MAIN/PDC/CTL devices.