ADEMCO 7920SE User manual

W3S5V5m
[ADEMCOJ 7920SE
TRANSCEIVER
INSTALLATION INSTRUCTIONS
MARGIN LINES INDICATE PRINCIPAL CHANGES IN THIS ISSUE
GENERAL INFORMATION
NOTE: This Product Is Approved By The New York City Board Of
Standards And Appeals Under Calendar Number 865-89-SA.
The 7920SE Transceiver is aself-contained, two-way polled radio, intended for
use with an ADEMCO Long Range Radio securitycommunicationnetwork. The
7920SE serves as a Subscriber’s link to the radio security network, and is
comparableto adigitalcommunicatorused inasystemwhichcommunicateswith
aCentral Monitoring Station by telephone line. The 7920SE can monitor 6
traditionalchannel trigger inputs.
NOTE: THESE INSTRUCTIONS ARE INTENDED FOR UNITS WITH
REVISION 7.83 AND HIGHER SOFTWARE.
P
P
o

TABLE OF CONTENTS PAQE
GENERAL lNFORMAnON ........................................................................................ 1
SYSTEMFEATURES...............................................................................................3
Functional DESCRIPTION...................................................................................5
GENERAL OPERATION .......................................................................................5
COMMUNICATION ................................................................................................
OLD ALARM TIMEOUT ..........................................................................................
LED INDICATORS ................................................................................................ 6
INTERFACE SOARD JUMPERS ...........................................................................6
PROGRAMMING THE 7920SE .................................................................................
CONNECTING A7720P PROGRAMMING TOOL................................................. ;
CONNECTING ACOMPUTER TERMINAL OR IAPTOP COMPUTER................... 7
USING A7720P PROGRAMMING T~L ............................................................. 9
PROGRAMMING MODE Selection ................................................................ 10
GENERAL PROGRAMMING NOTES .................................................................. 10
PASSWORD PROTECTION ................................................................................ 11
CENTRAL STATION MENU ................................................................................ 12
SUBSCRIBER SETUPMENU.............................................................................14
FAST MODEOPERATION...................................................................................... 17
UPLINWDOWNLINK MONITORING ................................ .................................... 16
FAST MODE DISPWYS ..................................................................................... 18
MOUNTINGTHE 792UE .......................................................................................l9
GENERAL INFORMATION ..................................................................................19
MOUNTING THE NO. 7625 A~ENNA ................................................................ 19
IMOUNTING THE TWNSCEIVER ....................................................................... 19
INSTALLING CHASSIS TAMPER SWITCHES ....................................................2o
WIRINGTHE 7820SE ............................................................................................~
POWERINGTHE SYSTEM....................................................................................m
SPECIAL UL lNSTRUC~ONS................................................................................25
flRE INSTALLATIONS ...........................................................................................26
TESTtNG THE SY~M .........................................................................................27
ADVANCED DIAGNOSmCS ....................................................................................28
NO. 685 DtGITAL RECEtVER MESSAGES ............................................................
CONNECTiON DIAGRAM .......................................................................................2
SPECl~CAnONS .................................................................................................a
GENERAL lNSTALtATiON PROCEDURES
To install the 7920SE, the followina tasks must be twformsd:
1.
2.
2a.
3.
4.
5.
Program the unfis system p%ameters using astandard or Iaptor
computer terminal, or 7720P Programming Tool with 7720RS Termina
Adapter.
Determine asuitable antenna location using the FAST mode o{
operation.
Verify through TAC Center, 800-222-6525.
Install the optional tamper switches, if desired.
Mount the unit and antenna,
Complete wire connections.
-2-

SYSTEM FEATURES
WIRELESS REPORTING
Alarm and status messages are transmitted to the security network by radio,
providing faster and more secure reporting than that typically achieved by
conventional telephone line reporthg.
COMPATIBILITY
The 7920SE is compatible with installations using standard alarm control
panels with alarm trigger outputs. The 7920SE may be used with digital
communicators on the same system, each serving as a backup to the other.
(Use an Ademco No. 659EN Line Fault Monitor connected to a7920SE telco
fault input, to report aline cut as a system backup to the
control/communicator). The 7920SE can also serve as a stand-alone alarm
reporting device in applications where remote sensors are continuously
armed.
PROGRAMMABLE FEATURES
The 7920SE utilizes EEPROM (Electrically Erasable PROM) technology,
which allows the 7920SE to be programmed with acomputer terminal. 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, and auxiliary control output
programming.
CHANNEL TRIGGER INPUTS
The 7920SE provides monitoring of up to 6traditional channel triggers, with
any channel capable of being programmed for triggering on inverted inputs.
Channel inputs are activated by 4.5-12VDC voltage inputs, or by the
application or removal of dry contact closures.
CHASSIS TAMPER PROTECTION
For UL “AA”installations, chassis tamper switches (Ademco No. 945WH or
No, 945BR) must be added to trigger an alarm whenever the chassis cover is
removed, thus protecting against urrauthorized access to the 7920SE.
BUILT-IN LEDs
The 7920SE Interface Board has four LED indicators which indicate message
reception, message transmission, messages waiting to be transmitted, and
the execution of acontrol function. The No.7920SE also provides output
terminals for connection to remote LEDs. The remote LED outputs can also
be programmed to serve as Central Station controlled outputs.
POWER SUPPLY
The 7920SE features aself-contained power supply, which can be provided
by an Ademco No. 1361 transformer plugged into a120VAC, 60 Hz, 0,5 amp
continuousAC power source. Abattery provides backup operating power in
the event of aprimary power failure.
-3-

SYSTEM FEATURES
LOW BA17’ERY MONITORING
The 7920SE tests the battery under unloaded conditions every 2minutes,
and tests under loaded conditions during each periodic transmission. The
system sends alow battery message if the battery fails the loaded test
(battery level drops below 11.2V ~5%), even if AC power is still present. In
addtiion, the relative conditionof the battery can be displayed on acomputer
terminal or 7720P connected to the 7920SE when displaying the NODE
TABLE (see ADVANCED DIAGNOSTICS section).
HIGH SECURITY SELF-CHECK
The high security test verifies that the antenna cable is intact by sensing
reflected power levels (VSWR test) of periodically transmitted signals, and
serves as antenna tamper protection. The test is performed automatically at
regular intervals and when the 7920SE transmits messages. Failure of this
test results in afault signal (low output) at the “Radio OK output terminat.
The condition of the antenna can be displayed on alaptop computer or
7720P connected to the 7920SE as part of the NODE TABLE display (see
ADVANCED DIAGNOSTICS section).
TELCO LINE FAULT INDICATOR
When selected, this feature will repmt the failure of amonitored telephone
line to the Central Station. For zone trigger operation, any of the 6input
channels may be designated the Telco fault input.
SELF DIAGNOSING TRANSCEIVER
The 7920SE has self-checking features which provide central station
notification in the event of aradio failure. Should acontinuous transmit
malfunction occur, the 7920SE will notify the Master Stations with aspecial
alarm message. Immediate action should then be taken to remedy the fauft.
The “HighSecurity Self-Check” feature (described separately) supervisea non-
transmit functions and signals faufts at terminal 7of TB2 (Radio OK output),
which can be used to locally enunciate the fault or to communicate the
conditionto the central station via phone link.
Receiver operation is checked by two programmable timeout periods
Receiver Trouble Timeout and Poll Timeout. The ‘Receiver Trouble Timeout”
triggers afault at the “Radio OK’ terminal (TB2-7) if the receiver doea not
hear normal network radio activity within aprogrammable time period. The
“Poll Timeout” will transmit apoll timeout message to the network if the
Transceiver is not polled within a-programmable time period. In addtiion, the
Master Stations continuouslycollect diagnostic data from each Subscriber in
the network, and will notify the Central Station if aparticular 7920SE is
malfunctioning.
-4-

FUNCTIONAL DESCRIPTION
GENERAL OPERATION
The 7920SE is adigitally synthesized FM transceiver that converts
conventional alarm system messages to radio messages, enabling an alarm
control panel, or controt/communicator, to communicate with the Central
Station via the radio security network Master Stations, Once aradio
communications channel is programmed, the 7920SE automatically and
continuously fine tunes its frequency to that of the security network Master
Stations. This frequency is then stored in EEPROM and will be the initial
frequency of the 7920SE upon power-up and reset.
The 7920SE utitizes aNo. 7625-3dB antenna which is an omni-directional
antenna, that may be mounted indoors, connected directly to the transceiver,
or may be mounted outdoors, using pre-assembled coaxial cable available
from Ademco. (Choice of cable lengths 5feet, 12 feet; or 25 feet).
COMMUNICATION
The network communication scheme is based on apolling process, whereby
the network Master Stations regularly poll each of the No.7920SE
Transceivers entered in the network database, and will alert the central station
if aparticular Transceiver has not acknowledged repeated poll messages
within aMaster Station programmable time period. This, in addition to the
Transceiver’s “poll timeout” feature, which alerts the Master Station if it hae
not received apoll within aprogrammable time period, provides full
Transceiver supervision. To further ensure that the Transceivers are
periodically heard from, each Transceiver reguiarly transmits asynchronous
“I’m OK” messages to the Master Stations.
When the 7920SE receives an alarm from the alarm control panel (zone
trigger or serial data), it first waits abrief period of time (6-12 seconds) for a
network poll. If the 7920SE does not receive apoll within that time, it
transmits “alarm waiting” messages, waiting abrief period between
transmissions to receive network acknowledgment. When the transceiver is
polled, or the Master Station acknowledges the “alarm waiting” status of the
7920SE, the Master Station opens atime slot for the 7920SE to transmit the
actual alarm message. When the alarm message has been transmitted, it is
relayed through the Master Station network to the Central Station, where it is
processed by the No. 685 Digital Receiver. The 7920SE then reports the
alarm as a previously reported event in subsequent polls, for as long as the
alarm conditionexists.
OLD ALARM TIMEOUT
The Transceiver will normally report all asynchronouslytransmitted alarms as
new events when it is eventually polled by the network. If desired, the
7920SE can be programmed to report the asynchronouslytransmitted alarm
as a previously reported event after aset time period (10 minutes -42 hours).
-5-

FUNCTIONAL DESCRIPTION
LED INDICATORS
There are four LED indicators, located on the Interface Board (located
beneath the chassis’s removable cover), which indicate the following functions
of the 7920SE:
MW TX ““L m
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LEDINDICATORS
Message
Waiting (MW): Yellow LED lights solid when the 7920SE has an
alarm message to transmit to the Master Stations.
Transmitting (TX): Red LED flashes when the 7920SE is transmitting a
message, either alarm or status, to the Master
Stations. When an RF fault occurs, the Red LED
flashes three times.
Receiving (RX): Green LED flashes when the 7920SE is receiving
messages from the Master Stations.
Control (CTRL): Yellow LED flashes when adownlink command is
received. ●
Upon initial power-up, the MW, TX &RX LEDs will bfink for 8seconds, after
which they will begin flashing in accordance with their functions. These LEDs
should be observed to verify proper communication with the security radio
network (the red and green LEDs should flash relatively frequsntfy). Provision
is also made for connection to remote LEDs, if desired. These remote LED
outputscan also be used as auxiliary controloutputs. -
●*Note that if more than one ●CAUTION: When using control
outputs, note that transceiver
control output is being used, the
LEDs will NOT flash according to power resets (as when entering
Program Mode) can effect the
their radio function described state of any devke corm-tsd to
above. They will light in the control outputs, and that
accordance with their ContnJl
Output programming. ●appropriate measures such as
time delays, should be taken to
avoid undesirable results due to
INTERFACE BOARD JUMPERS the device’s change of state. 1
The Interface Board has 4Programming jumpers (J11, J1, J9, J5) which are
used to set the operating mode of the 7920SE as follows
CHANNEL ITW3GE
(OR TERMINAL!
W
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$Z$i
J1l J1 J9 J5
WGFLAMMING J1
ECP SERIAL OAT)
a
ii~j
Jll J1 J9 *
&
dPERS
699 PROGRAMMER
a
qy
●
J1l J1 .)S I
Js
-6-

PROGRAMMING THE 7920SE
NOTE: These programming instructions apply only to units with software
version 7.83 or higher.
INTRODUCTION
lMPORTAN~ [f upgrading the software to version 7.02 or higher, refer to
Detail Aon the COVER REMOVED Pictorial Diagram at the end of this
manual for resistorjumping information.
Before installing the 7920SE, the unit must be programmed by using either a
7720P Programming Tool (with 7720RS Terminal Adapter), No. 699
programmer with 695-79 programming cattridge (see No. 695-79 Installation
Instructionsfor procedures), or by using astandard or laptop ASCII, RS232C
computer terminal. Programming is accomplished by answering questions to
two sets of programming menus: Central Station Setup Menu and
Subscriber Setup Menu. Ideally, the Central Station parameters should be
programmed by an authorized Central Station representative prior to the
unit’sdelivary to the installationsite.
CONNECTING A7720P PROGRAMMING TOOL
If using the 7720P to program the 7920SE, a7720RS Terminal Adapter must
also be US*O
a.
b.
Connect the cable from the 7720P to the 7720P jack on the 7720RS
Terminal Adapter. Connect another cable from the 7920SE jack on the
Terminal Adapter to the 7920SE’S programming jack, If the 7920SE is
already powered up, hold down the ENTER [#] key while making the
connection to the 7920SE. Holding down the ENTER [#] key sets the
baud rate to 9600, which is required when using the 7720P with the
7920SE.
Power up the 7920SE (if not previously powered up), but hold down the
ENTER [#] key while Dower is beina atmlied, After afew moments the
following prompt should appeac 7~20-PFtOGRAMMER (note that this
message may be replaced by incoming data messages). If 7920SE was
previouslypowered up, press SHltT-X to reset the system.
CONNECTING ACOMPUTER TERMINAL OR LAPTOP COMPUTER
1. Set the computer terminal to the following parameters:
m
Be sure the Interface Board jumpers are set for channel trigger operation
when programming the 7920SE.
Connecton RJ11 telephone plug (male) connected to aDB25 (standard
computer) or DB9 (for Laptop computers) wired as follows:
-7-

WIRING TABLE FOR CONNECTING THE 7920SE TO ACOMPUTER
TERMINAL
7920SE STANDARD LAPTOP COLOR
#s. CD\~:UTER FUNOTION
CDO~PUTER
1DONOTUSE DONOTUSE Yanow DONOTUSE
2 7 5Green CircuirGround
3 2 [ReceiveData
!4 ;3IL*& ITransmitData
2. Remove the Interface Board cover from the 7920SE and connect the
RJ11 plug from the computer terminal to the J2 telephone jack. Turn on
the computer.
-8-

PROGRAMMING THE 7920SE
USING A7720P PROGRAMMING TOOL
~The 7720P is powered by the 7920SE and can be used to program the
7920SE, as well as be used to monitor FAST mode distdavs. Refer to the
CONNECTING A7720P paragraph for connections. “ -
Each key of the 7720P has two functions, normal and SHIFT as follows
KEY NORMAL KEY FUNCTION SHl~ KEY FUNCTION
BSIESC [BS]: Press to delete entry [ESC]: Not used with 7920SE
[41:Not used with 7920SE [~1:Not used with 7920SE
NN [Nl: Press for “NO”answer. M: Press for “YES” answer
IIAl~o used to d~play Node [ --
Table. I
SHIH Press before pressing aSHIFT key function.Will lightSHIFT LED.
LED goes out once a kev is messed. Must mess again for each
II
must be held down while powering up or connecting to previously
cwwered
1’ Iup 7920SE. No SHIFT function

PROGRAMMING THE 7920SE
PROGRAMMING MODE SELECTION
Power up (or ‘X” key reset) the 7920SE (see “POWERING THE SYSTEM”
section). The red, green and yellow LEDs will blink on and off (i 4controlfines
are programmed, console will beep oncekcond) for 8secxmds,during whii
time the operating mode can be selected. Preae one of the followfng letters
to Sateot mod=
=FAST mode, for determining antenna location.
:= Subscriber Setup mode, for setting user options.
C= Central Station mode, for setting Central Station settings and passwords.
Once the mode is selected, apassword prompt will appear (i programmed).
If apassword is not assigned, the ‘7720P(Y/N)” question will appear. If
selection is not made within 8seconds from power up (or reset), the unit will
automatically enter normal mode. To reset the 7920SE at any time, press
“X (SHIFT-X for 7720P).
Once the password is accepted (i programmed), the 7920SE asks whiih type
of computer is being used. Press SHIIT-Y if using a7720P Programming
Tool. The current settings are displayed on the second line of each
programming question however.
GENERAL PROGRAMMING NOTES
To exit programming mode, press “N” in response to the
“CHANGE OPT(Y/NY auestion.
●
●
●
●
●
For the purposes o~ this manual, the symbol 1shown in the d~lays,
represents aflashing cursor that appears on the computer screen or 7720P
display.
Each menu displays aseries of questions which are answered by pressing
“Y’ for yes, ‘N’ for no, or the RM.JRN key for no change to the parameter.
When anumerical entry is required, type the appropriate value, then press
the REIWRN (ENTER) key to disptaythe next question.
Enter zero (0) to clear previouslyassigned option values.
When more than one zone is being assigned an option, type all zone
numbers consecutively. Do not use any spaces or punctuation betwean
the numbers. Unless otherwise noted, leading zeroes are not required in
numerical entries.
If the “4 Cntrl lines option is programmed, abeep will sound once”per
second for the duration of the 8second mode selection time instead of the
blinkingLEDs.
-lo-