BSS Audio Omnidrive FDS-380, Руководство пользователя

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1 Remove the metal can crystal oscillator from the socket CN3 on the ana-
logue input board. There may be a piece of wire holding the oscillator in;
remove the wire completely from the board.
2 Plug the AES3 PLL board into the analogue input board. The board should
be plugged in with the main part of the AES3 PLL board pointing toward the
back of the unit. Ensure that the pins go in straight and that all pins are in
the socket. Check that the pin 1 marker on the analogue input board is at
the same end as the pin 1 marker on the top of the AES3 PLL board.
3 Fit the long M2.5 screw and nut through the AES3 PLL board and the
analogue input board.
4 Power up the unit, being careful not to touch any of the mains input cir-
cuitry, and check the AES3 input/output board with either a 44.1kHz AES3
input or a 48kHz AES3 input; the input will automatically sync to which-
ever clock frequency is used. If the clock frequency is changed whilst the
unit is on, the output of the unit will mute for a few seconds while locking
to the new frequency.
5 Switch off and replace the unit’s lid and base panels.
6 Connect a test signal to the analogue input, select Analogue Input in the
Default Utility screen and check each output.
The AES3 Input/Output Board includes one female XLR socket for AES3 Input,
one female XLR to provide a system sync frequency input and four male XLRs
for AES3 Output.
With the AES3 I/O board fitted, it is possible for the user to select AES3 or
Analogue input from the Default Utility screen.
The unit can be operated without a connection to the AES3 sync input. The
output sample rate will then be locked to the AES3 input frequency which is
displayed in the Default Utility screen. If required, the output left/right clock
can be phase locked to an AES3 input on the sync input. This will phase lock
the AES3 output to the AES3 sync input. The AES3 input can then be up to 5%
out of phase from the AES3 sync input - the AES3 outputs will be synchronised
to the AES3 sync input left/right. The AES3 input must always be of the same
sample rate as the AES3 sync input, only phase errors will be corrected for
between the two.
If the analogue input is used without an AES3 input or AES3 sync input, the
user can select the output sample rate from the Default Utilities screen. If an
AES3 input or sync input is connected, that input will determine the output
sample rate and the user will not be able to adjust the sample rate. Whenever
the sample rate or input source changes the unit will mute for a few seconds as
the unit resynchronises.
The outputs are arranged with the higher two left channels together on one
connector and the lower two left channels on the next. The right channels are
split across two XLRs in the same way.
Plugging in the AES3
PLL Board
C.4 AES3 Input/
Output Board
Operation
Fitting The AES Input/Output Board
AES3 Input/Output Board Operation