User manual

Input ports with SRC On will convert the incoming signal to match the console sample rate.
Output may be at sample rates of 44.1k, 48k, 44.056k, 47.952k, 32k or Lock In -> Out.
When Lock In -> Out is selected, the output rate is matched to the input rate on the matching input port (e.g.
output port 1AES2ABwould lock to 1AES2AB).
820-091 Cards
Options for both Input and Output ports are:
Synchronous - the port is locked to the system sample rate.
Always 44100 - port locked to 44.1kHz regardless of system sample rate.
Always 48000 - port locked to 48kHz regardless of system sample rate.
Additional Input port options are:
Asynchronous - the incoming signal is buffered and truncated or interpolated with crossfade to compensate for
sample rate discrepancies.
NTSC Pullup - port locked to 44.056kHz if the system sample rate is 44.1kHz, or locked to 47.957kHz if the
system sample rate is 48kHz.
ä
To set SRC State double click in the State column for the required AES port which has been enabled.
A drop down list will appear with an X next to it with options according to the card and port type.
ä Double click on the required State.
The new State will be displayed in the column.
ä To check SRC Resources click on the SRC Resources button.
The SRC Resources dialogue box will be displayed.
GPI (General Purpose Interface)
The GPI page is used to associate relays and opto-isolated inputs (optos) with a wide range of events. This is in
addition to the standard relay setup (associating relays with ports) in the I/O Configuration page.
The method of identifying relays and opto-isolators depends on the hardware available. If a status panel is
installed then the relays and opto-isolators it uses are identified by the letters A to H. If a Relay Control Unit is
installed then there are 64 relays and 16 opto-isolated inputs available, and they are identified numerically.
Tools Menu I/O Config
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