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© 2012 Telular Corporation
seconds) indicating loss of RF signal strength. Reconnect the
antenna and check to see that the STC LED #2 goes off after a
period of time, indicating RF signal strength restored.
Note:
The Received Signal Strength (RSSI) must be less than -
114 dBm in order to cause a NSC condition. If the Telguard is
located in a high signal strength area (close to a cellular
tower), it is possible for the signal strength to be greater than
-114 dBm even with the antenna disconnected.
Verify the STC History
The POTS command 858 was designed to display STC history for
troubleshooting purposes. This feature increases in-field efficiency by
eliminating the need for installers to call Telular for STC report data.
To access the STC history, enter the POTS programming mode as
described in the previous section. Enter the POTS command 858, and
wait for the confirmation tone (2 beeps). Enter “1” to start the history
display. The STC LED will light for 3 seconds, then each STC in the
history log will be displayed as a series of flashes of the STC LED. At the
end of the history, the STC LED will again light for 3 seconds, denoting
the end of the history log. After the STC history is displayed, the STC
LED will return to normal operation. To cancel the history playback at
any time, use the POTS command 858 with a parameter value of “0”.
The STC history log can be cleared by using the POTS command 858
with a parameter value of “2”. The STC history log is also cleared when
the Telguard unit is reset.
Step 5: Connect and Test the Trip Input (optional)
In addition to the interface to the alarm panel, a single trip input may
be connected to the terminal block of the TG-1 Express. When the
input is tripped, a supervisory message is sent to the central station via
the Telguard Message Center. This allows an external relay, separate
from the alarm panel, to be connected to the Telguard unit in order to
