Calrec SUMMA, Руководство по установке

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58 SUMMA
Networked Audio Production System
Connection Information
GPIO CONNECTIONS
GPIO cards provide logic inputs and
outputs, which can be assigned to
various functions from the Summa
interface. GPIO allows console
functions to trigger external devices
e.g. fader starts for playback devices,
and for external devices to trigger
console functions, e.g. auto-fades
controlled by a video switcher.
If GPIO is required, please discuss this
with your sales person or project engineer.
Optional GPIO cards can be fitted in
modular Hydra2 I/O frames, or any
fixed format Hydra2 box with a height
of 2U or greater. Multiple boxes can be
fitted with GPIO cards to make up the
required quantity of GPIO ports. The
physical location of I/O boxes within the
installation should be considered when
choosing which to fit with GPIO cards.
A fixed format I/O box fitted with a GPIO
card has two D25 connectors on the
rear—female for inputs, male for outputs.
GPIO cards for modular frames have a
single D50 connector on the front for
both inputs and outputs. Two versions
of modular card are available, one with 8
changeover relay outputs and one with 16
normally open relay closures.
GPI(inputs)
Each GPIO card type has 8 opto-isolated
inputs allowing for remote triggering of
console functions. Applying DC or AC
voltage across the positive and negative
pins of an input will trigger it. A common
way to trigger a GP input is by providing
a dry closure from a relay with no voltage
on it. If using a dry closure, it should not
simply be wired across the +/- terminals
of the opto input - one half of the closure
should be connected to a ground on the
GPIO card, the other half of the closure to
an opto input, and the other input should
be linked in the connector hood to a
GPIO card +5V pin, as shown below. This
prevents potential problems in connecting
power between different manufacturers’
hardware.
GPO(outputs)
The fixed format I/O box GPIO card and
the WY5858 modular GPIO card both
have 8 changeover relays, each with
access to the normally open, normally
closed and either common relay pins or
normally open/closed negative pins, to
provide flexibility in use. If required, these
contacts can be used to switch audio.
If being used to trigger external
equipment expecting a ground, the relay
common should be connected to a ground
from the external equipment and either
the normally open or normally closed
contact used as the trigger line.
If a dry closure is required by the external
equipment, this can be achieved by wiring
one leg to either the normally open or
normally closed contact and the other leg
to the common or normally open/closed
negative contact.
Normally open (NO) contacts short to
the common or negative pin when the
relay is activated by the selected function.
Normally closed (NC) contacts are
shorted to common or negative when the
function is
not
active.
Dryclosureonlyoutputs
The WY5859 version of modular I/O card
provides the same 8 inputs along with 16
dry closure only relay connections, which
short when activated (NO+ & NO-).
Pin-outs for all GPIO card types are
shown the on following pages.
0V
+IN
-IN
+5V
Trigger
GP Input
External
Closure
Calrec GPIO card
+5V
(Dry)
External wiring
GP INPUT WIRING EXAMPLE CHANGEOVER OUTPUT EXAMPLE #1
changeover relay
(shown inactive)
Calrec Fixed Format
GPIO card
External wiring
Com
NO
NC
changeover relay
(shown inactive)
Calrec modular
GPIO WY5858
NO-
NO+
NC+
NC-
Connect NC-
and NO- to
make common
• Changeover relay shown wired to
provide a dry closure when activated.
For WY5859 treat NO- as common
changeover relay
(shown inactive)
Calrec GPIO card
External wiring
Com
NO
NM
• Changeover relay shown wired to
provide a ground when activated.
The ground can come from a 0V pin
in the GPIO card connector itself
as long as the receiving equipment
has the same ground reference.
For WY5858 and WY5859 common
setup see above.
CHANGEOVER OUTPUT EXAMPLE #2