Studio Technologies 761 - Manual (Page 29)

Model 761/771 User Guide Issue 1, March 2008
Studio Technologies, Inc. Page 29
for Surround
Operation
Now that you’ve installed and confi gured
the system, you’re ready to go. You should
fi nd operation very easy. However, taking
time to study this section of the guide may
prove valuable, especially regarding the
system’s support for dialnorm.
Model 761 Central Controller
The Model 761’s front panel contains
three LEDs. The power LED should be lit
whenever AC mains power is connected.
The control console activity LED will light
steadily whenever the Model 761 is com-
municating correctly with the Model 771.
This LED will remain off during the system
power-up process, something that typically
takes several seconds to complete. The
metadata activity LED will light whenever
an active metadata signal has been con-
nected and valid sync word information is
being received.
Model 771 Control Console
StudioComm operation is controlled using
the Model 771 Control Console and, if con-
nected, the remote control inputs. To make
things easy to describe, we’ve divided the
StudioComm functions into seven main
groups: input source selection, downmix,
monitor output general functions, channel
solo, director cue output, display and dis-
play mode, and remote control inputs.
Input Source Selection
Four input select buttons work together to
allow monitoring of up to six input sources.
One source can be selected for monitor-
ing at any one time. The input sources are
grouped into two sets of three with the
groups labeled SD and HD. Each group’s
three input sources are labeled primary,
SAP, and international (INTL). The titles
were selected to match the names com-
monly assigned to sources in broadcast
facilities. The SD (standard defi nition)
primary input supports either a 5.1 sur-
round or 2-channel stereo source. The HD
(high defi nition) primary input supports a
5.1 surround source. The SD and HD SAP
and international inputs each support a
single-channel monaural source. SAP is a
broadcast-derived acronym for secondary
audio program. An “international” source
simply refers to an alternate source that
is typically associated with remotely origi-
nated broadcast material. Note that, as
would be expected, the titles of the actual
sources connected to a specifi c Studio-
Comm system may not match the Model
771’s descriptions. Local technical person-
nel should be familiar with the actual con-
nected sources.
The SD/HD button is used to select the
active group. Pressing the button will
alternate between the groups. Two LEDs
are associated with the SD/HD button
and indicate which of the groups is active.
Three buttons are used to select the spe-
cifi c input source to be monitored. They
are labeled primary, SAP, and INTL (inter-
national). LEDs are associated with these
buttons and indicate which is active. Note
that the Model 771 “remembers” which
specifi c input was last selected for each
group, so changing between groups will
switch between two specifi c inputs. This
allows rapid switching between, as
an example, SD primary and HD SAP.
Downmix
Two downmix functions allow users to per-
form “real-world” audio format compatibility
checks. One function allows a 5.1 surround
signal to be “folded down” (converted) to