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Appendix A: Summary of LED Operation
7845GSM Status Display Operation
The 7845GSM Status Display has three LEDs used to indicate message and device status:
• STATUS, green
• MESSAGE, yellow
• FAULT, red
Figure 13. 7845GSM Status Display LEDs with Front Cover Installed
Each LED can have four different states - ON, OFF, FAST BLINK and SLOW BLINK.
Throughout this document, the following key is used to describe LED state:
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GREEN
(STATUS)
YELLOW
(MESSAGE)
RED
(FAULT)
ON
OFF
Figure 14. LED Key
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FAST BLINK
SLOW BLINK
S E C T I O N
Appendices
7845i-GSM-012-V0
6
6-1