LS10265-000HW-E:D 06/03/2021
1
56052901
–
Rev B
General Description and Operation
The Telguard
TG-7 series is a line of digital cellular radio alarm transmission devices used to provide the
following three methods of communications for alarm panels via a cellular network:
•
Sole
path
(Cellular Transmission Only)
•
Primary
path
(Cellular Primary & Telco Backup
)
•
Back-up
path
(Telco Primary & Cellular Backup
)
Depending on the TG-7 series model and configuration (determined at time of installation), the alarm panel
will use the PSTN line or cellular as sole, primary or back-up (secondary) transmission path to deliver alarm
messages. When it is configured as a backup, it will provide transparent access from the alarm panel to the
central station. When transmitting an alarm signal using the cellular path, the Telguard obtains its data from
the alarm panel by way of a Telco line interface. The Telguard will obtain all alarm signal information
including monitoring station phone number, account number and all zones for every alarm transmission.
The Telguard handshakes with the alarm panel causing it to transmit the alarm data.
The Telguard encodes
the alarm data and transmits to the Telguard Communication Center (TCC) over the digital cellular network.
The TCC performs a function similar to a central station receiver and issues the transmission
acknowledgement when the last message in the transmission is received. After decoding and reformatting,
the alarm signal is routed to the desired alarm company monitoring station for action.
In a cellular back up alarm installation, the incoming Telco line is connected from the premise
’
s RJ-31x jack
to the Telguard unit and then from the Telguard unit's RJ-45 jack to the alarm panel in the normal fashion.
Two programmable System Trouble Condition (STC) relays provide supervisory trip outputs for connection to
the alarm panel’s trip zone
input terminals in order to provide a Telguard device trouble signal to the alarm
panel. Additionally, automatic self-test and remote query signals are transmitted exclusively over the cellular
network with all Telco line and cellular monitoring, switching and supervisory functions built in. The TG-7
Series communicator supports several power supply options. The TG-7 series devices can be plugged into a
standard 125VAC outlet and will keep a dealer-supplied battery charged. TG-7 devices can also operate on
12VDC power from the alarm panel. The TG-PEM Power and Expansion Module Accessory is available for
adding dry contact zones to TG-7 units or for using 24VDC panel power to operate the TG-7FS unit.
The UL Listed equipment at the TCC plays a key role in the operation of every Telguard device. All Telguard
units utilize the TCC due to the panel alarm signal format encoding and decoding requirements used in
packet-data transmissions over the digital cellular network. The TCC also manages the real-time databases
for cellular accounts and a complete history of every Telguard unit
’s
operating conditions. These conditions
include programming setup information, cellular alarm transmission information, supervisory trouble
information, remote query information, and automatic self-test information.
The TG-7 Series is offered in several models designed and configured to meet various applications and UL
and ULC requirements as listed below.
