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O P E RAT I O N
O P E RAT I O N
O P E RAT I O N
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88
Manual SDs-01 E 3.2.2003 18:26 Uhr Seite 12
14
MODE Function Area
The function area MODE includes six different operation modes for signal
distribution which are accessible by repeatedly pressing the DATA switch.
One or more LEDs will light for the corresponding mode, respectively for
combinations of modes. During the signal distribution process, the status
of the internal PLL circuit will be displayed in the status area STATUS.
Furthermore the clock rate of the incoming reference signal will be
analyzed and reported in the status area CLOCK
IN
. During all distribution
and conversion processes, the status bit settings of the incoming signal will
be not affected.
The factory default setting is AES/EBU.
AES/EBU
This function distributes an incoming AES/EBU reference signal alinged
to AES 3 or AES 11 directly to all AES/EBU and AES/EBU ID outputs
simultaneously. The internal PLL circuit is stabilizing and de-jittering, the
output driver stages are refreshing the incoming signal. The output level of
the AES/EBU ID outputs can be selected in function area AES/EBU ID
OUT
.
AES/EBU
+
AES 3
→
11
This function combination distributes an incoming AES/EBU reference
signal as described above. Additionally this function converts an digital
audio signal (AES 3) which is supplied at the AES/EBU input into an digital
reference sync signal (aligned to AES 11). A real format conversion is carried
out during this process!
AES/EBU
+
AES 3
→
11 + REF PASS
This combination of three functions distributes and converts an incoming
AES/EBU reference signal as described under „AES/EBU“ and „AES/EBU
+
AES 3
→
11“. Additionally the system outputs the original incoming signal
at AES/EBU output no. 1 (marked as „1/
PASS
“) while all other outputs are
carrying the converted AES 11 sync signal.
AES/EBU ID
This function distributes an incoming AES/EBU ID reference signal alinged
to AES 3 ID directly to all AES/EBU ID and AES/EBU outputs simultaneously.
The internal PLL circuit is stabilizing and de-jittering, the output driver
stages are refreshing the incoming signal. The output level of the AES/EBU
ID outputs can be selected in function area AES/EBU ID
OUT
.
AES/EBU ID
+
AES 3
→
11
This function combination distributes an incoming AES/EBU ID reference
signal as described above. Additionally this function converts an digital
audio signal (AES 3) which is supplied at the AES/EBU ID input into an
digital reference sync signal (aligned to AES 11). A real format conversion is
carried out during this process!
AES/EBU ID
+
AES 3
→
11 + REF PASS
This combination of three functions distributes and converts an incoming
AES/EBU ID reference signal as described under „AES/EBU ID“ and „AES/EBU
ID
+
AES 3
→
11“. Additionally the system outputs the original incoming
signal at AES/EBU ID output no. 1 (marked as „1/
PASS
“) while all other
outputs are carrying the converted AES 11 sync signal.
Example
In a studio environment the only sync ref-
erence is a digital audio signal. This signal
should be available for a DA converter. But
at the same time sync reference signals are
needed for devices which should to be syn-
chronized to e.g. the digital mixing desk.
In this case the »AES/EBU + AES 3
→
11 + REF
PASS« function helps to make the digital
audio signal available for the DA converter,
while having a sync reference based on the
phase relationship of the digital audio signal
available for synchronization of the other
devices to the mixing desk.
AES 3: Digital Audio Signal
AES 11: Sync Reference Signal (converted out of AES 3)
»AES/EBU + AES 3
→
11 + REF PASS« Function
2 x AES 11 ID
OUT
AES 3
OUT
AES 3
IN
2 x AES 11
OUT
3 x AES 11
OUT
