Revision C • 10/07
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2 Installation
vated when any channel with a studio mic as its
source is turned On.
The other three logic outputs (commoned to-
gether on pin 10) are for studio dim (pin 12), stu-
dio mute (pin 11), and studio talkback (pin 13).
These can be used to control external speaker
switching or be used for tally indicators.
There are two external logic inputs for remotely
dimming the studio monitors (on pin 9) or for
muting the studio monitors (on pin 8). To use these
inputs pin 14 must be tied high (+5 to +40 VDC).
The logic inputs are triggered by being pulled low.
Cue/Talk/External Logic
This 12-pin connector has a remote cue logic
input (pin 12) and an External Talk to C/R logic
input (pin 11). To use these inputs pin 10 must be
tied high (+5 to +40 VDC). The logic inputs are
triggered by being pulled low.
Four logic outputs (commoned together on pin
3) are for an external location dim (pin 7), mute
(pin 6), and talkback (pin 5). These can control
external speaker switching or tally indicators. The
fourth logic output is used to reset an Event Timer
(pin 4) in a studio or an external location.
Assignable Logic
There are three of these 12-pin connectors on
the KSU (labeled B, C, D). Additional Assignable
Logic connectors can be added by installing one
or more optional 8-Input Expansion Cards (not
available on the RMX
d-4).
Each Assignable Logic I/O connector is typi-
cally connected to either a remote mic control
panel (using Mic logic) or to a peripheral device
(using Line logic). Mic logic is primarily used when
the audio input that the logic connector is assigned
to is set to mute a control room, studio or exter-
nal location.
A remote control panel is connected to an As-
signable connector so its buttons can control a
channel strip while tally outputs control the but-
ton tallies in sync with the channel strip buttons.
The
init.mac
or the active session file sets the
binding for the Assignable connector logic (to as-
sociate it with the mic’s audio input).
When assigned as a line input, the functions for
pins 2, 5, 8 and 11 can be set to interface periph-
eral devices. Pin 2 typically is set as a remote cue
switch input that can be triggered by a digital de-
livery system or from a studio or producer cue
switch. Pin 8 typically is set as a ready logic input
that is used by a peripheral device to turn off the
channel audio as well as control the off button
illumination to indicate that an event has been
completed.
Pins 11 and 5 typically are set as start and stop
outputs to automatically start or stop/pause a pe-
ripheral device when the channel is turned on or
off. These typically generate single 220 msec con-
tact closures between pin 6 and pin 5 or 11, but
they can also be set to output additional pulses
for each button press, or be set to output sustained
contact closures. These choices are set in the
init.mac
file or by the current session file.
Microphone Logic
Microphone logic has three main functions:
mute the monitor speakers in the room with a “hot”
mic; command a hot mic warning light; and acti-
vate mic logic functions like talkback and cough.
The warning commands come from the control
room or studio logic connectors, but it is the ses-
sion file settings for the Universal Dual Fader In-
put panels that tell the monitor logic that a cer-
tain input is a mic and where that mic is located
(control room, studio, or an external site). Setting
a Universal input as a mic input is done in the
session file by setting its Room Code, a VistaMax
system function that assigns each room in the fa-
cility a code used to identify where a mic is lo-
cated in the VistaMax system.
Summary of Contents for RMXDIGITAL
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