Specifications
passcode, the system shall not disarm .
Q. User-Program m able Features: The DACS shall provide a m enu driven interface to provide
a user-friendly com mand structure for programm ing / customizing the system to the
operational criteria of the application. The DACS shall be capable of being operated via:
1. The Com m and Structure.
2. Menu / Com mand List.
2.3 SYSTEM INTERFACE REQUIREMENTS
A. Grounding: The Contractor shall properly earth ground the DACS to prevent electrostatic
charges and other transient electrical surges from damaging the DACS panel.
B. Prim ary power: The Contractor shall provide a dedicated 120 VAC power circuit to the
DACS system . This circuit shall be connected to the em ergency power system . The 120
VAC is stepped down to power the DACS panel using a class two, plug-in transformer. This
power circuit shall be properly rated to continuously power all points and functions
indefinitely in full alarm condition.
C. Prim ary power supervision: W hen the prim ary power source fails, the system can be
configured to report an "AC Fail" m essage to a com m ercial central station.
1. The m essage can also be program m ed to "tag-along" with another m essage
transm itted to the central station.
2. The system will always display a loss of prim ary power on the ACC and m ay be
configured to provide additional audible warning.
3. The transmission delay of this m essage is program m able from 5 seconds to 86
minutes with an optional 6 to 12 hour transm ission delay
D. Secondary power (standby battery): The Contractor shall provide adequate battery power as
defined by the relevant application criteria, (UL 864 and UL 985 for alarm installations or
NFPA 72 chapters for fire applications). Appropriate battery chargers shall be provided
consistent with the battery back-up capacity. The m ost current accepted version of NFPA
72 and any applicable local codes or AHJ requirem ents m ust be met accordingly.
E. Secondary power supervision: W hen the secondary power source experiences a 85 percent
depletion of its standby capacity, the system can be configured to report a "Low Battery"
message to a com mercial central station. The system will always display a low battery
condition on the ACC and m ay be configured to provide additional audible warning.
F. Telephone interface: The control panel in the DACS shall be equipped with a phone line
monitor and shall interface with the phone lines via RJ-31X jacks for supervision of the
telephone line connection.
1. The telephone line interface shall conform with FCC rules (Title 47 C.F.R. part 68).
2. W hen a telephone line is determ ined to be out of service by the DACS panel, the
event will be annunciated locally on the ACC and transm itted to the central station
over the alternate com munications interface. The transmission delay of this m essage
is program mable from ten to two-hundred forty seconds.
3. W hen a telephone line is determ ined to be out of service by the DACS panel, the
event will be annunciated locally based on programm ing options
4. A telephone line switching m odule shall be used to interface to a second telephone
line.
G. Ethernet Interface: The DACS m ay use an Ethernet interface m odule as the primary, or
back-up m eans of com m unicating to a DACR.
1. Built-in IP-based alarm transport, program ming, and control
2. The m odule shall accomm odate 128-bit AES encryption.
3. 10BASE T or 100BASE T network connection
4. Full-duplex and half-duplex support
H. GSM/GPRS interface: The DACS m ay use an GSM/GPRS radio m odule as the prim ary, or
backup, means of com m unicating to a DACR. Up to 4 IP Addresses shall be available for
routing system events. The supervision time shall be programm able with a range of 5 to
65,535 seconds. This m odule shall accomm odate 128-bit AES encryption.
I. Auxiliary function control interfaces: The DACS shall accom modate auxiliary functions such
as activating bells, strobes, or lights and shall be accom plished using the optional
application specific relay m odules. These auxiliary interfaces shall be electrically isolated to
avoid inter-system interferences or dam age to the system .
J. W iring: The contractor shall provide cables consistent with the manufacturer's
recom m endations. The following general guidelines shall be followed for wiring installation:
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