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Manual SDs-01 D 3.2.2003 17:45 Uhr Seite 16
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FORMAT
(function)
FORMAT This function allows for altering the S/P-DIF format stored in the
channel status bits (byte 0, bit 0) of the S/P-DIF blank frame signal. The
factory default is CONS.
PROF, CONS
(setting)
PROF, CONS This setting allows for toggling the S/P-DIF blank frame signal
between consumer (CONS) and professional (PROF) formats.
DCSET
(function)
DC-OFFSET This function allows for applying a DC-offset signal level of ap-
prox. 200 mV to the output S/P-DIF blank frame signal. The factory default
is OFF.
ON, OFF
(setting)
This will enable (ON) or disable (OFF) the DC-offset signal level in the S/P-
DIF blank frame signal.
Functions and settings on the second S/P-DIF output page:
AUDIOSTAT
(function)
AUDIOSTATUS This function allows for setting the audio status stored in
the channel status bits (byte 0, bit 1) of the S/P-DIF blank frame signal. The
factory default is NONAUDIO.
NORMAUDIO, NONAUDIO
(setting)
These settings allows for selecting the norm-audio or non-audio statuses.
REFSTAT
(function)
REFERENCE STATUS This function allows for changing the reference status
stored in the channel status bits (byte 3, bits 4, 5) of the clear-frame signal
of the selected S/P-DIF output pair. The factory default is LEVEL 3.
LEVEL 3
(setting)
With the LEVEL 3 (variable) setting, the S/P-DIF blank frame signal is output
with no information on clock accuracy.
LEVEL 2
(setting)
With the LEVEL 2 setting, the S/P-DIF blank frame signal is output with a
clock accuracy of ±1000 ppm.
LEVEL 1
(setting)
With the LEVEL 2 setting, the S/P-DIF blank frame signal is output with a
clock accuracy of ±50 ppm.
If the professional format is selected,
the physical parameters of the output
terminals (unbalanced operation, level, and
impedance) will remain unchanged!
The functions and settings displayed on
the S/P-DIF menu pages are automatically
adapted with regard to the channel-status
bits of the professional format.
Example
There are S/P-DIF receiver circuits causing
problems when synchronizing to S/P-DIF blank
frame signals. This usually results in increased
jitter and signal instabilities. Enabling a DC-
offset level in the S/P-DIF blank frame signal
will allow for synchronizing any S/P-DIF input
stage. This level can normally be processed wit-
hout problems by the concerning S/P-DIF input
stages, thus ensuring reliable synchronization.