5.1 SURROUND MONITORING SYSTEM optimized for broadcast

5.1 SURROUND MONITORING SYSTEM optimized for broadcast
optimized for broadcast
5.1 SURROUND MONITORING SYSTEM
broadcast master control | broadcast post-production
Model 76B and Model 76DB Central Controllers
Model 77B and Model 71 Control Consoles
The StudioComm Model 77B Control Console and Model 76B Central Controller with analog outputs or Model 76DB Central Controller
with digital outputs enable simple and effective monitoring of 5.1 surround and stereo audio material. Especially well suited for
broadcast master control and post-production applications. System features include:
• Digital audio inputs
• Analog outputs (Model 76B)
• Digital outputs (Model 76DB)
• Flexible input source selection
• Downmix
• Dolby® E dialnorm support
• Level adjustment, reference level, and dim
• Auxiliary monitor output (2-channel)
Model 77B and Model 71 Control Consoles
The Model 77B Control Console is the “command center.” Designed to reside at an operator’s location, it allows fingertip selection
of all monitoring functions. Numerous LED indicators provide complete status information. Up to six unique input choices are
available. Each of the choices can be configured from the system’s two surround (5.1) and three stereo (2-channel) inputs.
The configuration mode also allows stereo inputs A and B to be used as either stereo or dual monaural sources. This can be
especially useful in broadcast applications where a 2-channel AES3id source may carry two independent monaural signals.
A large, easy-to-use rotary digital encoder provides control of the surround monitor output level in precise 0.5-dB steps. A
4-digit numeric display indicates the monitor output or dialnorm level in real time. The monitor output level can be adjusted via
the rotary level control, the reference level function, or by way of the dialnorm information included in Dolby E metadata (refer
to “Dialnorm Support”).
The Model 71 Control Console works with the Model 77B to provide additional user locations with the most frequently desired
functions: level adjustment, reference level, and dim.
Model 76B and Model 76DB Central Controllers
Model 77B and Model 71 Control Consoles
DIALNORM SUPPORT
The dialog normalization “dialnorm” value is an integral part of many broadcast distribution systems and represents the average
dialog level of an associated audio program, ending up as part of consumer audio playback systems. The dialnorm level value is a
component of the Dolby E metadata, and when de-embedded, can be “read” by the Model 76B or Model 76DB Central Controller and
displayed on the 77B Control Console. By automatically adjusting the surround monitor output level in response to the dialnorm
value, a professional broadcast or post-production environment can more accurately simulate the end user’s experience.
Model 76B and Model 76DB Central Controllers
The Model 76B and Model 76DB Central Controllers are rack mountable and offer two surround (5.1) and three stereo (2-channel)
digital inputs that are compatible with AES3id sources. Sample rates of up to 192 kHz and bit depth of up to 24 are directly supported.
Exceptional dynamic range and extremely low distortion ensure that the audio quality of each source is maintained.
The model 76B Central Controller has eight analog balanced line-level outputs organized as:
• Surround (5.1)
• Auxiliary stereo (2-channel)
The Model 76DB Central Controller offers 16 digital output channels with transformer-coupled outputs and selectable impedance
(75 or 110 ohms):
• Pre-fade surround (5.1)
• Post-fade surround (5.1)
• Auxiliary pre-on/off stereo (2-channel)
• Auxiliary stereo (2-channel)
The Model 76DB’s sync input allows support for video (bi-level and tri-level), word clock, DARS, and AES3id. Sample rate conversion is
available on one input. In addition, up to 340 milliseconds of digital delay can be selected to compensate for processing delays in an
associated video path.
One Model 76B or Model 76DB Central Controller can support a combination of up to four Model 77B or Model 71 Control Consoles.
Model 76B Central Controller
General Audio
Frequency Response
20 Hz to 40 kHz ±0.05 dB (192 kHz sample rate)
Distortion (THD+N)
0.004%, ref 1 kHz, +4 dBu output
S/N Ratio
86 dB, ref +4 dBu output
Dynamic Range
greater than 106 dB
Crosstalk
104 dB @ 1 kHz; 90 dB @ 20 kHz, ref –1 dBFS input
Digital Audio Inputs
five (18 audio channels)
Configuration
two surround (5.1) and three stereo (2-channel)
Type
AES3id/SMPTE 276M (75 ohms, unbalanced)
Connectors
BNC
Supported Sample Rates
32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
Word Length
24 bits maximum
Sync Source
all inputs independently self-clocking
Analog Monitor Outputs
eight
Configuration
organized as one surround (5.1) and one auxiliary stereo (2-channel)
Type
electronically balanced
Maximum Level
+26 dBu into 600 ohms or greater
Connector
25-pin D-subminiature female
Downmix
5.1 to stereo, stereo to mono
Dolby E Metadata Input
Type
RS-485/RS-422
Connector
9-pin D-subminiature female
Data Rate/Format
115.2 kbit/s, 8-N-1
Control Console Interface
Type
RS-485, 115.2 kbit/s, 8-N-1
Connector
9-pin D-subminiature female
Power
12 volts DC, 200 milliamperes maximum
Remote Control Inputs
three
Functions
remote mute all, remote dim, auxiliary output on/off
AC Mains
Requirement
100, 120, or 220/240 V, ±10%, factory configured, 50/60 Hz, 30 watts maximum
Connector
3-blade, IEC 320 C14-compatible (mates with IEC 320 C13)
Mounting
one space in a standard 19-inch rack
Dimensions
19.00 in. wide (48.3 cm) x 1.72 in. high (4.4 cm) x 8.75 in. deep (22.2 cm)
Weight
8.8 pounds (4.0 kg)
Model 76DB Central Controller
General Audio
Supported Sample Rates
32, 44.1, 48, 88.2, 96, 176.4, and 192 kHz
Word Length
24 bits maximum
Internal Processing
32 bits
Dynamic Range
134 dB
Digital Audio Inputs
five (18 audio channels)
Configuration
two surround (5.1) and three stereo (2-channel)
Type
AES3id/SMPTE 276M (75 ohms, unbalanced)
Connectors
BNC
Sample Rate Conversion
available on Stereo Input C
Sync Input
Sources
video (bi-level, tri-level), word clock, DARS (AES11), AES3id
Jitter
4 ns (p-p) maximum
Connector
BNC
Termination
75 ohms, selectable on/off
Digital Monitor Outputs
four (16 audio channels)
Configuration
organized as two surround (5.1) and two auxiliary stereo (2-channel)
Type
AES3id/SMPTE 276M (75 ohms) or AES3 (110 ohms), selectable
Connector
25-pin D-subminiature female
Configurable Delay
0 to 340 milliseconds @ 48 kHz sample rate
Downmix
5.1 to stereo, stereo to mono
Dolby E Metadata Input
Type
RS-485/RS-422
Connector
9-pin D-subminiature female
Data Rate/Format
115.2 kbit/s, 8-N-1
Control Console Interface
Type
RS-485, 115.2 kbit/s, 8-N-1
Connector
9-pin D-subminiature female
Power
12 volts DC, 500 milliamperes maximum
Remote Control Inputs
three
Functions
remote mute all, remote dim, auxiliary output on/off
AC Mains
Requirement
100 to 230 V, 50/60 Hz, 15 watts maximum
Connector
3-blade, IEC 320 C14-compatible (mates with IEC 320 C13)
Mounting
one space in a standard 19-inch rack
Dimensions
19.00 in. wide (48.3 cm) x 1.72 in. high (4.4 cm) x 7.00 in. deep (17.8 cm)
Weight
6.2 pounds (2.8 kg)
Model
ode 77B aandd Model
ode 71 Co
Control
t o Co
Consoles
so es
Application
up to a total of four Control Consoles can be connected to a Central Controller
Power Requirement (provided by Central Controller)
Model 77B
12 volts DC, 100 milliamperes maximum
Model 71
12 volts DC, 35 milliamperes maximum
Central Controller Interface
Type
RS-485, 115.2 kbit/s, 8-N-1
Connector
9-pin D-subminiature female
Dimensions
Model 77B
7.20 in. wide (18.3 cm) x 2.20 in. high (5.6 cm) x 5.40 in. deep (13.7 cm)
Model 71
3.20 in. wide (8.1 cm) x 2.20 in. high (5.6 cm) x 4.1 in. deep (10.4 cm)
Weight
Model 77B
1.7 pounds (0.8 kg)
Model 71
0.8 pounds (0.4 kg)
At Studio Technologies we design and manufacture dependable,
high-performance audio products for demanding professionals.
For over 30 years we have never wavered in our commitment to
building rock-solid products and off ering outstanding customer
service. Our products are used worldwide in broadcast, studio,
stadium, and corporate environments.
5520 W. Touhy Avenue
Skokie, IL 60077 USA
Phone: +1 847-676-9177
Fax: +1 847-982-0747
studio-tech.com
Specifications subject to change without notice. © by Studio Technologies, Inc., 2009.
50240-0109, Issue 1
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