ADEMCO 7845CZ, Installation And Setup Manual

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Section 7: Operation Overview
7–3
Transmit Error:
The bar graph LEDs also indicate failed message transmission error codes by the number of
lit segments. Refer to the “Transmitting an Alarm” paragraph in this section for details.
GRN GRN GRN YEL YEL
INCREASING SIGNAL STRENGTH
GRN
GRN GRN YEL YEL
YELLOW
OFF
GRN
GRN GRN
YELLOW
BLINKING
YEL YEL
Signal Strength Bar Graph Initial Power-Up Display Radio Registration Display
Table 8. Bar Graph LED Indications
PATTERN MEANING
Lit
Power on, or
LED Test
Rapid chaser Power on reset condition.
From left to right, one or more
LEDs are lit, with the leading
LED either lit or blinking. Normal RSSI display. See Figure 2 and refer to the “Selecting
a Radio Installation Site” paragraph in
Section 4 for a
description of this display.
Yellow LED not lit, green LEDs
sequentially being lit from right to
left – counting down. Radio initial power-up sequence. This display is seen only
when the 7845CZ is being powered up. Refer to the “Initial
Power-Up Sequence” paragraph in
Section 4 .
Yellow LED is blinking, green
LEDs sequentially being lit from
right to left – counting down. Radio registration sequence. This display is seen only when
the 7845CZ is being registered. Refer to
Section 6:
Registration.
Flash in unison Registration unsuccessful.
Normal Operation
With the 7845CZ installed, programmed, and registered, and after a successful transmission
of the Power on Reset message, the 7845CZ enters normal operation. Normally, with good
cellular coverage and no messages pending, the yellow status LED will flash in one of two
patterns indicating the operating carrier.
•
Yellow flashing once per second indicates no alarm messages are pending and that the
7845CZ is connected to a cell being operated by the “B” side carrier.
•
Yellow flashing twice rapidly, then a pause every second, indicates no alarm messages
are pending and the cell that the 7845CZ is in contact with is operated by the “A” side
carrier.
Refer to Table 7 for all LED patterns.
At any point during operation, the red LED lights when contact with the cell has been lost. The
7845CZ automatically attempts to regain contact with the cell. If contact is not regained before the
programmed radio fault time, the radio fault changes state, sending a radio fault to the control
panel.
Transmitting an Alarm
While in normal operation, triggering the zone or reception of a valid ECP message initiates
the transmission of an alarm. The yellow status LED lights, indicating a pending message.
The green LED flashes rapidly when the alarm message has been successfully transmitted.
The yellow LED begins to flash rapidly, indicating the 7845CZ is waiting for a message
validation from AlarmNet Control. This may take several minutes to receive, since the