4 Functional Description
ID No: 7164491 Page 43
4.3.7. External Alarm Controller - EAC-card
The EAC circuit card is used as communication interface between the Main and
Extension Units as well as general purpose housekeeping functions of the Main or
Extension unit.
These functions are:
- collection of the external alarms; door alarm, summary alarm, distribution of the I
2
C-
bus to the duplexers, mains power, DL final amplifier, electronic door label (EDL),
state of the LEDs.
figure 4-17 EAC-card
figure 4-18 EAC-card, installed
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