
SYSTEM
FEATUFiESm.._...I..._...e......_.._..._.....
.2
OPERATION .. . . . "_"....".. ." -........-.....-..... . -3..
GENERAL.”-----...-..- .”
.... . .-...I-- ..3
AMEhNA ....“_..._. --.-........-.-.---.----. -3
LOW BAllERY SHmDOWN --- :
LEDNDCATlONS ._._...“_.-_.__.. ... .._...s-.-.
RADIOFAULTLED PATTERNS..
...................3
SEITING THE JUMPER OKlO%. ....................4
REMOVING THE nxrs CWER ...................... ..s
WIRING,tmUNTlNG 8 PcwJERING.................5
PKGRAMMlNGTHE7720“...“...”.
..“........
PROGRAMTOOL..
C........
..............
USINGA772OP
PROGRAMMlNG QUESTIONS..
....................6
EXlTlNG PROGRAMMODE.......
. ...................9
ANTENNAhKwmNG
.. ._._."....I._ .". ..... .^.I .... 10
SELECTINGA SflE (FAST MODE).
.......... 10
STANDARD WIRE ANTENNA -mm__ ...10
ANTENNA CONNECTOR KIT m-w_. 10
EsTlffi TI-E 7720._...”.”.“.“-.“.*.-.“.--... .. .”.” 11
RADIOTRANSMISS~ TEST..... ..-_....
...I 1
SYSTEMTEST...“,,” ..-““.. .“““-“““.“-““““^ 11
STATUSS CohrMAND... ... ._.”...-.-....“.... 11
NOTES f OR UL INSTALLATIONS --12
Sf’ECFICATK)NS . ._-._-_._--...__.__.---.“-. 12...
COPWECTfONS
DIAGRAM-.
...._.._...._......_
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13
SYSTEM FEATURES
Wlreless Reporting: All alarm and
status messages are transmitted to the
master station network via radio signals,
which means faster and more secure
reporting.
Integrated Electronics: The entire
radio link equipment, including interface,
transmitter, power supply, battery and
antenna, is housed in a single unit, requiring
only battery charging power and alarm
inputs from a standard 12 volt alarm panel.
Selection of Input Interfaces: The
7720 can monitor alarm inputs from
Ademco ACP, Ademco ECP. discrete 4
zone contact closures or their electrical
equivalent, or from external gate and
modulation inputs.
Compatibility: The 7720 is compatible
with existing installations using ADEMCO
equipment or other control panels. The
7720 can be used in conjunction with
digital communicators on the same
system,. both acting as backup to one
another (use an ADEMCO 659-EN tine
Monitor connected to a zone input to report
a line cut and backup a digital dialer), while
connecting the radio fault output to a zone
on the dialer.
Built-in LED Indicators: Three LEDs
are used to indicate message
transmissions, low battery conditions and
radio faults. A blinking yellow LED
indicates normal operation.
Built-in Tamper Protection: For
added protection, built-in cover tamper
switches will trigger an alarm whenever the
chassis cover is removed, thus protecting
against unauthorized access to the 7720.
The tamper zone number must be entered
in programming question 25 to enable
protection.
-2-
Antenna Included: The 7720 comes
with an omni-directional wire antenna, and
also features an optional antenna kit
(7720ANT) for using a 7625 antenna.
Programmable Features: The 7720
utilizes EEROM (Electrically Erasable
ROM) technology, which allows the 7720 to
be programmed with a 7720P Programming
Tool. The programming options include
channel assignments for Telco fault input,
inverted trigger inputs, delayed reporting
channels (16 second delay, if selected),
open/close/restore reporting channels,
etc.
Self-Diagnosing Transmitter:
Malfunctions of the transmitter, including
antenna fault, low output power, loss of
external power, low internal DC voltage and
internal radio-frequency circuit problems
can be reported on both the ACP/ECP
interfaces, as well as being transmitted to
the master station network. if the fault
does not predude such transmission. For
other alarm panels, faults can trigger
contact closures on a Form ‘C’ relay to
indite radio faults.
Power Supply: The 7720 is powered by
its own 12 volt battery, which can be
charged by an alarm panel’s output voltage
(14.0-14.2VDC). The charging input draws
approximately 50mA continuous and
40OmA peak current during transmission.
Low Battery Monitoring: The system
will notify the central station of a low
battery condition whenever the battery
voltage drops below 11.2V (& 5%).
Low Battery Shutdown: If for any
reason the battery voltage drops below
9.75 volts, the radio will automatically
shutdown. Refer to the LOW BATTERY
SHUTDOWN section for more information.
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