ATEIS IDA8C - Manual (Page 122)

Ateis Studio 122
© 2012 ATEÏS
PDC N
Connect to peripheral which communicates to audio processor using PDC interface, for example
PSS AS, PPM AS.
S_PDC N
Connect to one of secondary audio processor's PDC connectors.
3. IDA8 Telephone Connector
There are two connectors for IDA8 telephone line:
Primary Audio Processor Telephone: Connect to telephone line connector of primary audio
processor.
Secondary Audio Processor Telephone: Connect to telephone line connector of secondary audio
processor.
4. Telephone Line Connector
There are two connectors for telephone line of telephone company:
Tel. Line1: Line1 for telephone company connection.
Tel. Line2: Line2 for telephone company connection.
5. Telephone Line Audio Output for Record
Audio output of active telephone line.
6. Active Control Expansion Output
This port output logic signal to next RU devices to synchronize redundancy state which tells primary
or secondary is active.
7. 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.
8. S_ACT(Secondary Active Output)
Output a logic signal to indicate secondary audio processor is active.
9. S_WD(Secondary Watching Dog)
IDA8RU-Main/PDC/CTL determine active system will be primary or secondary audio processor 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.
10.P_ACT(Primary Active Output)
Output a logic signal to indicate primary audio processor is active.
11.P_WD(Primary Watching Dog)
RU devices monitor this logic signal for determining active audio processor, please refer to item