Ensemble Designs 6020 Four Channel 24-bit Audio DAC User Manual
Page 22
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Emph - the color of this box indicates the status of emphasis on the digital input
signal pair as follows:
Yellow indicates emphasis is present on the input and is being corrected.
Yellow/Gray (blink) indicates input emphasis is not being corrected or
incorrect deemphasis has been forced manually.
Black indicates no emphasis is detected on the input signal pair.
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I/P Emphasis - displays emphasis data decoded for the input AES signal as
follows:
None - indicates input signal has no emphasis.
Not indicated - emphasis status of the AES input audio in not indicated (profes-
sional format only).
50/15µS - emphasis using these time constants was applied to the input AES
signal.
CCITT J.17 - emphasis conforming to this standard was applied to the input
AES signal (professional format only).
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Deemphasis - displays any deemphasis being applied to the signal by the 6020
module as follows:
None - no deemphasis is being applied.
50/15µS - deemphasis using these time constants is being applied.
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Nxt Err - a left mouse-click on this box will clear the currently displayed error in
the Error Log (explained below). It will then display the next highest priority
error logged if it is present.
•
Error Log - displays the most important error detected in the AES input signal
pair that occurred since the log was last cleared. Seven error messages, in order of
decreasing importance, may be displayed as follows. The first three of these are
treated as major errors.
No lock - input PLL is unable to lock to the AES input signal.
Bi-phase coding - a bi-phase coding error in the AES input signal is detected.
Parity - a parity error has been detected.
CRC - the CRC data in the AES input signal did not match the locally calculated
CRC (professional format only).
Confidence - the input signal eye opening has fallen below AES standard limits.
Invalid Error - the validity bit in the AES input signal has been set.
No error - no errors have been detected since the log was last cleared.
Model 6020 Four Channel 20-bit Audio DAC
6020-22