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Please note that this function may
not be used for unauthorized copy-
ing of any kind of data material!
!
INTERN SYNC
This function activates the clock oscillator built into the FORMAT CHANGER
advanced. In this mode, any clock signal applied to the inputs mentioned
above will be ignored. Independently of the incoming audio signals sam-
pling rate, you can now determine the exact sampling rate of the outgoing
audio signals. For this purpose, you need to select the function and then
switch over to the functional area OUTPUT FREQ (see below).
Parameters in the OUTPUT FREQ (-UENCY) Area
This functional area will be active only if the function INTERN SYNC in the
SYNC SOURCE area has been selected before. Independently of the incom-
ing audio signals sampling rate, you can now adjust one of the six output
sampling rates available. Since these rates are coupled to the internal high-
precision clock oscillator, they are generated with constant accuracy, even if
there are fluctuations in the audio signals sampling rate. The rate adjusted
here is simultaneously sent to the WC/SC output as a Word Clock signal for
the synchronization of equipment connected there.
The clock rates generated by the internal clock oscillator of your FORMAT
CHANGER advanced feature a temperature-compensated stability of +/- 10
ppm, which corresponds to the specifications of AES 11, Grade 2 (!). Thus
you can use the FORMAT CHANGER advanced even in smaller set-ups as
a master clock for the synchronization of other equipment. If one clock
output is not enough for your specific application, please consider using
our DISTRIBUTOR ws for the distribution of clock signals (see enclosed
brochure).
Parameters in the SCMS Area
In this functional area you can manually place SCMS copy bits and monitor
their status.
As is generally known, SCMS copy bits are exclusively defined in S/PDIF data
streams to prevent multiple copies of the digital audio material. As a result,
copy bits can only be placed into or removed from outgoing S/PDIF signals.
The AES/EBU specifications have no additional bits defined in the audio
material that prevent unauthorized copying.
Before you place SCMS copy bits, you should check the incoming audio
signal for existing SCMS data. For this purpose, the FORMAT CHANGER
advanced has two red status LEDs marked ORIG and 1st, which indicate
the current SCMS status of the incoming audio signal. This function works
independently of the general operating mode of the unit.
The SCMS copy bit system distinguishes originals (the bits placed to
represent the original version of the audio material) from 1st generation
copies (the bits placed to represent the first copy of the original). Conse-
quently, any audio material marked as 1st generation material cannot be
copied any longer via S/PDIF interfaces.
When working in a recording studio environment, you will usually need to
be able to easily exchange digital audio material between different devices,
which is why the FORMAT CHANGER advanced always erases copy informa-
tion contained in the channel status block of the outgoing audio signal,
which also includes SCMS copy bits. If you wish to protect your audio mate-
rial from unauthorized copying via S/PDIF interfaces, simply press the SCMS
key, so that the SET LED (green) lights up signaling that the outgoing audio
signal will be marked as 1st generation material.
Since the FORMAT CHANGER advanced
stores all settings even after power-down,
you should press the SET key again upon
completion of an SCMS-coded recording,
in order to disable this function and allow
for the free exchange of audio material
between the various devices in the studio.
Parameters in OUPUT FREQ (-UENCY) area
Parameters in SCMS area
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