2 Installation
digital
Revision C • 1/04
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FUNCTIONAL DESCRIPTION OF CONNECTION
When pulled low, routes the External Talkback Audio Input to Studio 1 MONITOR and HOST outputs.
NOTE:
When DIP switch 7 is on, Talk to Studio 1 is disabled (see page 2-51).
When pulled low, routes the External Talkback Audio Input to the Studio 1 HOST output.
NOTE:
When DIP switch 7 is on, Talk to Studio 1 Host is disabled (see page 2-51).
When pulled low, routes the External Talkback Audio Input to Studio 2 MONITOR and HOST outputs.
When pulled low, routes the External Talkback Audio Input to the Studio 2 HOST output.
When pulled low, routes the External Talkback Audio Input to the control room TALKBACK and OPERATOR
outputs.
Connect this pin to Logic 5 VDC (pin 7 or 8) to enable the active low logic inputs (Talk to C/R, and
the four Talk to Studios) when they come from an isolated control panel.
Normally Open (N/O) contact. A “contact closure” to ground is generated whenever Talk to External is
activated from the Control Room, the Producer, or a microphone module.
Logic voltage source that can deliver up to 300 mA of current to isolated remote panels. Pins 7 and 8 are
simply paralleled for convenience.
Logic ground. Connect only to isolated remote panels only.
The balanced line-level Talk To External audio output. This can drive a powered talkback speaker, or, if the
External location goes on-air, it can be summed into the External location’s headphone feed.
The balanced line-level Talkback From External audio input. One of the Mic Preamp module’s preamplifiers
can be used to boost the External location’s talkback microphone to line-level to feed this input.
Shields for the balanced Talkback Audio Input and Output. Connects to the chassis.
PIN NAME / NUMBER
TALK TO STUDIO 1 (-)
(pin 4)
TALK TO STUDIO 1
HOST (-) (pin 5)
TALK TO STUDIO 2 (-)
(pin 12)
TALK TO STUDIO 2
HOST (-) (pin 13)
TALK TO CONTROL ROOM (-)
(pin 14)
ACTIVATE LOGIC INPUTS (+)
(pin 15)
EXTERNAL TALK TALLY (-)
(pin 6)
LOGIC 5 VDC
(pins 7 & 8)
LOGIC GROUND (pin 16)
AUDIO CONNECTIONS:
TALKBACK AUDIO OUTPUT
(-) & (+) (pins 3 & 11)
TALKBACK AUDIO INPUT
(-) & (+) (pins 1 & 9)
TALKBACK IN & OUT SHIELDS
(pins 2 & 10)
Studio Module, EXTERNAL (DIP switch 7 Off ) Audio & Logic Signal Definitions
