User’s Manual for Node G
Network Elements
Page 44
M0121A2A.doc
4.3.7.1. LEDs
Three LEDs are included on the EAC-card of the Main Unit. They are controlled via
the I
2
C bus.
The colors and illumination functions are:
LED 3
shows a permanent red light when the
power of a connected Extension Unit is
bad.
LED 2
shows a permanent yellow light when
the battery backup is active.
LED 1
shows a permanent green light when
the rechargeable battery is OK. It
blinks when the battery is fully charged
and is in the trickle-charge mode.
figure 4-19 Position of the LEDs
on the EAC-card of the Main Unit
On the EAC-card of the Extension Unit is only one LED which shows a permanent
green light when power is okay.
figure 4-20 Function of LEDs on the EAC-cards of Main and Extension Unit
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