ATEIS IDA8C - Manual (Page 125)

Product Features 125
© 2012 ATEÏS
2. Expansion Power Supply
Output 24V DC power to next RU-MAIN/PDC/CTL devices.
There are two connectors of this output:
PRI: Connect to Power Supply PRI connector next RU-MAIN/PDC/CTL.
SEC: Connect to Power Supply SEC connector next RU-MAIN/PDC/CTL.
3. Power Supply
24V DC power input, which is connect to 24V DC Output of audio processor.
There are two connectors of this input:
PRI: 24V DC power input from primary audio processor.
SEC: 24V DC power input from secondary audio processor.
4. Evacuation Inputs
There are 9 channels for evacuation input, each channel consist of three connectors, where "N" is
the number of channel:
P_N: Connect to N th evacuation input of primary audio processor.
N: N th channel of evacuation input.
S_N: Connect to N th evacuation input of secondary audio processor.
5. Active Control Expansion Output
This port output logic signal to next RU devices to synchronize redundancy state which tells primary
or secondary is active.
6. 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.
7. S_ACT(Secondary Active Output)
Output a logic signal to indicate if secondary IDA8 network is active.
8. S_WD(Secondary Watching Dog)
IDA8RU-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 audio processor will be active, but if RU is set to slave, it
only monitor S_WD to determine which one can be active.
9. P_ACT(Primary Active Output)
Output a logic signal to indicate if primary audio processor is active.
10.P_WD(Primary Watching Dog)
RU devices monitor this logic signal for determining active audio processor, please refer to item