AES6800
+
Installation and Operation Manual
5
Chapter 1: Introduction
Preliminary—Contents are proprietary and confidential. Do not photocopy or distribute.
Each 6800
+
module has a number of LEDs assigned to indicated
varying states/functions. These functions are listed in
.
Table 1-2.
AES6800
+
Module-Specific Status LEDs
Condition
Color
Function
All OK
No Errors
Green
No error, everything working well
No lock
Red
Signal not present or cannot be locked
Biphase
coding error
Amber
Biphase coding of incoming data incorrect
Parity error
Amber
AES stream’s parity not set as specified
CRC error
Amber
CRC value calculated for incoming data
does not match the CRC byte of channel
status word
Confidence
flag error
Amber
Received data eye opening less than half a
bit period, indicating a possible lack of
signal strength or high jitter; also may mean
that insufficient EQ applied
Validity error
Amber
AES stream’s validity bit is high (incoming
data not suitable for conversion to an analog
audio signal)
Alarm
Amber
External alarm contact closure asserted; card
reporting an alarm
Frame status* Red
Frame alarm
Green
All OK, no frame alarm
* If the frame status LED is not lit, the module may not be operational.
