iSTAR eX Tools
1–30 iSTAR eX Installation and Configuration Guide
Power Failure Alarm
If the AC power fails on the external power supply, an AC power
failure alarm is asserted.
Battery Low Alarm
When the battery in the apS drops to 10.2VDC, a battery low alarm is
asserted. This value will be similar for all External Power supply
devices that are used with the NPS model.
Power-On LED Indicator
The power-on LED lights up whenever the board has DC power,
either from the External Power supply or battery. This LED is the
“Super Bright LED” used in the iSTAR and shines through the door
label.
Heartbeat LED
The heartbeat LED is connected to a port line of the micro controller
and indicates that the firmware is running.
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