– 17 –
APPENDIX A
SUMMARY OF LED OPERATION
GSMVLP-ADT Status Display Operation
The GSMVLP-ADT Status Display has four LEDs used to indicate message and device status (refer to
Figure 5). When installed in the control, the LEDs appear in the following order from top to bottom.
•
STATUS,
green
•
MESSAGE,
yellow
•
FAULT,
red
•
MINIMUM SIGNAL STRENGTH, green
Each LED can have four different states - ON, OFF, FAST BLINK and SLOW BLINK. Throughout this
document, the key shown in Figure 7 is used to describe LED state:
ON
GSMVL-002-V0
OFF
FAST BLINK
SLOW BLINK
Figure 7
–
LED Key
Minimum Signal Strength LED Operation
The Minimum Signal Strength LED normally displays the module’s signal strength. The LED (green
LED) will be lit to indicate that the minimum required signal strength for installation exists between
the module and the receiving tower. Refer to Figure 8.
Table 3. Status and Signal Strength LED Operation
LED COLOR
LED
DESCRIPTION
GREEN STATUS
ON
– GSMVLP-ADT is NOT configured with account information.
OFF – GSMVLP-ADT is configured with account information.
FAST BLINK – Download session with Compass in progress.
YELLOW MESSAGE
ON
– Message transmission pending.
QUICK PERIODIC BLINK - Normal
FAST BLINK – Message waiting for network ACK.
RED FAULT
ON
– No contact with network.
OFF– Normal.
SLOW BLINK – Loss of communication with the panel (ECP fault).
FAST BLINK – No network contact AND loss of communication with the panel.
GREEN MINIMUM
SIGNAL
STRENGTH
ON – Minimum required signal strength is present.
BLINKING – Marginal signal strength is present.
OFF– Installation is not recommended.
ALL (of the above)
FAST BLINK – Hardware Error. Call the ADT Technical Assistance Center.
