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Reference Manual D AD 3220 B Version 1.0
Page 18
Alarm/LED Status Indicators
The D AD 3220 B module has built in LED indicators,
which serve as alarm and status indication for the
module. Function is described below. The Indicators
are found on the bottom of the module and can
be seen through the access holes provided. (fig2)
Module Edge Status LED
Channel Status LED`s are provided on the module
edge, which has three color states. LED 1 is for AES
in 1 and LED 2 is for AES in 2.
Note. When in 1:8 mode LED2 is always OFF
1234
DIP Switch
ON
OFF
LED 2 LED 1
Channel 1 StatusChannel 2 Status
Front Panel Alarm Indicator
There is also a single alarm LED on the front side of
the module, which is designed for quick and easy
indication of a problem condition.
LED OFF indicates power is lost, or there is a power
supply fault.
LED Color Indication
Green Input Signal Present / locked
Yellow AES errors (Parity errors)
Red Input signal not present / not locked
LED Color Indication
Green Input signals present
Yellow One input missing / errors (only in dual
mode)
Red Input signals lost