Calrec Apollo, Руководство оператора

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CALREC
Putting Sound in the Picture
15
96KHZ OVERVIEW FOR APOLLO
With v8.0, Apollo consoles can now
work at 96kHz sampling frequency
(sample rate).
The following list is a quick overview of
the impact of running Apollo consoles at
96kHz:-
The consoles can switch between 48kHz
& 96kHz working as required.
Consoles switch sampling frequency by
loading a show at the required sample rate
built from a template at that rate.
The numbers of channels and buses are
reduced at 96kHz but the numbers at
48kHz are the same as before.
There is no reduction in the numbers of
monitor inputs and outputs at 96kHz.
I/O boxes can be set to 48kHz or 96kHz,
or to follow the sample rate of a specific
console, via H2O.
The Hydra2 network supports 48kHz
and 96kHz consoles and I/O boxes
simultaneously.
Hydra2 runs at 48kHz irrespective of
whether the consoles and I/O boxes are
running at 96kHz or not. It simply uses 2
samples per 96kHz signal.
Because Hydra2 always runs at 48kHz,
the system will still require a 48kHz sync
(if using its AES3 & Wordclock inputs)
even if all consoles and I/O are at 96kHz.
The console patching screens and
required list indicate which ports, HPB,
aliases, or boxes are at a different sample
rate to the desk. These ports etc can be
patched (except for System level patches)
but will not work until the sample rates are
matched.
The H2O patching screens filter the ports
visible by sample rate, as it can make
patches at either rate.
Consoles cannot successfully make port
to port patches (including via aliases) for
I/O that is at a different sample rate to the
desk. Note these patches can be made
in H2O and by SW-P-08 and will work if
patched there.
System Status messages are produced
for I/O boxes & HPB that are in the
required list but are not set to the same
sample rate as the desk.
An I/O box can run at 48kHz or 96kHz
irrespective of which rack it is plugged
into. If a console is running at 48kHz, an
I/O box plugged into that rack could be
running at 96kHz with another console.
Fixed format 1U MADI boxes do not
support 96kHz. They are shown offline
when the box is at 96kHz.
SDI de-embedder modules do not support
96kHz on the SDI stream. They are
shown offline when the box is at 96kHz.
SDI embedder modules do not support
96kHz on the SDI stream. They are
shown offline when the box is at 96kHz.
For the following, at 96kHz the Apollo
consoles have half the numbers as at
48kHz for each desk/pack size:
• Channels.
• Mains & LtRt processes.
• Groups.
• Main/Group buses pool.
• Auxes & aux buses pool.
• Tracks & track buses pool.
• Inserts pool.
• Direct Outputs pool.
• Input Delay pool (but each element
is still 2.73 sec).
• Output Delay pool (but each element
is still 2.73 sec).
• Loudness meters.
For the following, at 96kHz the Apollo
consoles have the same numbers as at
48kHz for each desk/pack size:
• Mix Minus bus.
• 4 Track Sends per path.
• 4 Direct Outputs per path.
• Path Delay of 2.73 sec per path.
• EQ & Dynamics per path.
• Dynamics Links.
• Automixers.
• Main Output Downmixes/Main.
• Autofaders.
• External Monitor Inputs.
• Monitor systems and outputs
(pre & LS), including Mon 1 Insert.
• PFL & AFL systems including
Side-chain listen, APFL and
outputs (pre & LS).
• 4 Meter Selectors and outputs.
• Assignable Meter Processes.
• TB & RTB.
• Tone/oscillator including interrupts,
external inputs and outputs.