2 Installation
digital
Revision C • 1/04
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2-49
FUNCTIONAL DESCRIPTION OF CONNECTION
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).
Normally Open (N/O) contact. A “contact closure” to logic ground (pin 16) is generated whenever a
Universal Input module, that is set to Mute External (DS1-5 or DS3-5 is set to On), is on.
Consult Harris Radio
Systems Engineering for design information on using this logic output.
Normally Open (N/O) contact. A “contact closure” to logic ground (pin 16) is generated whenever another
location is talking to External. Consult Harris Radio Systems Engineering for design information on using
this logic output.
Normally Open (N/O) contact. A “contact closure” to logic ground (pin 16) 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 2 (-) (pin 12)
TALK TO STUDIO 2 HOST (-)
(pin 13)
TALK TO CONTROL ROOM (-)
(pin 14)
ACTIVATE LOGIC INPUTS (+)
(pin 15)
MUTE EXTERNAL
COMMAND (-) (pin 4)
DIM EXTERNAL
COMMAND (-) (pin 5)
TALK TO EXTERNAL
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 On) Audio & Logic Signal Definitions
