Service Condition (Nsc); Radio Communications Failure Condition (Rfc); Complete Power Supervision; Low/Missing Battery Condition (Lbc) - Telular TELGUARD DIGITAL TG-1 Installation And Operating Instructions Manual

2.3.1 No Service Condition (NSC)
Telguard declares a no service condition (NSC) when the measured "receive" cellular radio signal
strength at the protected premises drops to -114 dBm or less. NSC is programmable to trip the
supervisory relay output (STC relay) after a 30 or 60 second delay. When STC relay trips, the
STC LED will flash 4 times. Restoral of this condition occurs when a measurable signal strength
greater than –114 dBm is maintained for the trip period of 30 or 60 seconds.

2.3.2 Radio Communications Failure Condition (RFC)

Radio communications failure condition (RFC) is declared when Telguard is unable to transmit
over the cellular network even with acceptable signal strength. RFC is indicated by the STC
(System Trouble Condition) LED flashing 5 times.
2.4 C
OMPLETE
Telguard monitors its backup battery as well as its AC power source and reports power conditions from
either. Telguard's integrated control and power module incorporates a battery charging circuit that is
programmable for various battery capacities. Battery charger circuit is monitored.

2.4.1 Low/Missing Battery Condition (LBC)

The Telguard checks the backup battery voltage on initial power-up and every 60 seconds thereafter. If
the battery voltage changes from 'good' to 'bad' state and is less than 11.6 volts, a LBC is declared
whereby the STC LED blinks twice (every 5 seconds) and the STC relay trips. When the battery voltage
increases to 12.1 volts, the STC LED and STC relay restore. Telguard also indicates Low/missing Battery
Condition (LBC) when battery charger fails.

2.4.2 AC Failure Condition (ACFC)

AC failure condition (ACFC) is detected immediately (not programmable). The AC Power LED
goes out immediately, the STC LED blinks once and the STC trip output is activated after 2
hours. When AC power returns to normal (≥106 VAC for 60 seconds), the AC Power LED turns
on immediately and the STC trip output restores after 60 seconds.

2.4.3 Dial Tone Failure (DTF)

The Telguard continuously monitors the 30V sully circuit that provides dial tone to the C/C. A Dial
Tone Failure (DTF) is declared when the 30V supply drops to 20V or less while the C/C is on-
hook. The STC LED will flash 6 times and the STC relay will trip. Additionally, a TYPE 2
supervisory message is automatically transmitted to the Telular Communications Center. This
condition represents a catastrophic failure and will require contacting the Telular Communications
Center for resolution.

2.4.4 Catastrophic Failure (CF)

Catastrophic Failure (CF) is any condition that causes the Telguard to stop functioning at all
levels. Most commonly because of AC power failure followed by a complete discharge of the
backup battery. The STC trip output is activated and visible indication is loss of all LED activity.
2.5 T
ELGUARD
The Telguard automatic self-test signal is programmed to daily, weekly or monthly schedule as prescribed
by contract. The central station receives the automatic self-test report in the same format that the C/C
normally uses for communication over the telco line. The central station provides the Telguard self-test
code along with the time and frequency of transmission when the Telguard is initially activated. The
Communication Center captures all current and historical data pertaining to the operation of the Telguard
when it processes the automatic self-test signal on to the central station. This data contains current
operational status (C.O.S.) of the Telguard such as "All OK", "AC fail condition", "low/missing battery
condition", or any combination of these as well as the current signal strength. In addition, the data also
contains historical data for supervisory events that occurred since the last self-test signal was transmitted.
This data includes the number of occurrences of AC fail conditions, low battery conditions, line fault
conditions, communications failure conditions and no cellular service conditions. This additional
information is available by contacting Telular Technical Support.
56034002 1/9/2006
P S
OWER UPERVISION
A S -
UTOMATIC ELF TEST
2
R
EPORT
© 2006 Telular Corporation