Data Sheet

Operation
The Model 793 Control Console provides the operator with an easy-to-use interface and includes a set of pushbutton switches, a
rotary control, and a backlit OLED graphics display. Together these resources are used to select the desired monitoring environ-
ment. User functions include selecting the input source, adjusting the listening level, selecting the monitor output, and activating
other special features. The four audio inputs, two 16-channel surround and two 2-channel stereo, can be individually selected
for monitoring. Although only one is typically selected to be monitored at any one time, for flexibility two, three, or all four can
be combined (summed) and monitored. The rotary control (actually an encoder with 30 steps per rotation) allows adjustment of
the monitor output level in 0.5-dB steps.
For content confirmation, each of the unit’s sixteen channels can be individually muted or soloed as desired. Multiple channels
can also be simultaneously muted or soloed and needed. A reference level value can be saved and then enabled by the operator,
allowing the monitor output level to be directly returned to a known value. A mute all function simultaneously mutes all sixteen
output channels. The dim feature allows the operator to attenuate the monitor output level from among four configurable values.
The graphics display will show a variety of system-related information. This includes the text names that have been assigned to
the input sources and output destinations. The display will also show the current monitor output level directly in dB. Pressing
the rotary control’s knob will cause the management port’s IP address to display, helpful when configuring the StudioComm
with Dante Support system.
LED indicators are provided on both the front and back panels of the Model 792. These relate to selected performance character
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istics of the Ethernet interfaces, Dante interface, general system activity, and levels of the unbalanced stereo audio input. They
can be useful during installation, troubleshooting, and operation of the StudioComm system.
Special applications can take advantage of the Model 792 Central Controller’s ability to be controlled using an API running
under an operating system on external computer hardware. Using HTTP, in the form of sending GET or POST HTTP requests, all
Model 793 Control Console user control functions can be duplicated using a software-based application. These HTTP requests
will interface with the Model 792 by way of the management Ethernet interface.
Simple Installation
The Model 792 Central Controller uses standard connectors to allow fast and convenient interconnections. Gigabit Ethernet
connections are made to local area network (LAN) ports using three RJ45 connectors, two for Dante and one for management.
Multiple LEDs on the unit’s back panel display the status of the network connections. Four 25-pin female D-subminiature con-
nectors are used to interface with the unit’s 16 channels of analog surround input and 16 channels of analog monitor output. A
3-conductor 3.5 mm jack, located on the Model 792’s front panel, allows connection of a source of unbalanced stereo audio.
A detachable power cord is used to connect the Model 792 to a source of AC mains power. A DC power source can be con
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nected using a 4-pin XLR connector. The lightweight aluminum enclosure mounts in one space (1U) of a standard 19-inch rack
enclosure. An interconnecting cable with 9-pin male D-subminiature plugs on each end are used to interconnect the Model 792
Central Controller with the Model 793 Control Console. An interface cord with an approximate length of 20 feet (7.3 meters) is
included with each StudioComm system. The standalone Model 793 Control Console is typically placed on a surface that allows
easy operator access.
AC and DC Power
The Model 792 allows an AC mains source of 100-240 V, 50/60 Hz to be connected by way of a detachable power cord. The unit
can also be powered using a 12 volts DC source that is connected via a broadcast-standard 4-pin XLR connector. If both the AC
and DC power sources are connected the Model 792 will be powered by the AC mains supply. Only if the AC mains source fails
will a load be placed on the DC source. The Model 792 Central Controller provides a current-limited source of 12 volts DC power
for use by the Model 793 Control Console.
Future Capabilities and Firmware Updating
Both the Model 792 and Model 793 were designed so that their capabilities can be easily enhanced in the future. A USB con-
nector, located on the Model 792’s back panel, allows its main and FPGA firmware (embedded software) to be updated using a
USB flash drive. The Model 792 uses Audinate’s Brooklyn II module to implement its Dante connectivity. The firmware in this
module can be updated via the unit’s Ethernet connections, helping to ensure that the Dante capabilities remain up to date. The
Model 793 also utilizes a USB connector, located inside the unit, to allow its main firmware to be updated. All firmware files
and configuration parameters are securely stored in non-volatile memory.
Studio Technologies, Inc. StudioComm with Dante Support 792/793, Issue 1, Page 4