The Model 77B Control Console is the "command center" and is designed to reside at an operator's location. It allows fingertip selection of all monitoring functions. Numerous LED indicators provide complete status information. A 4-digit numeric display indicates the monitor output or dialnorm level in real time. A major strength of the Model 77B is its ability to configure, under software control, many important operating parameters.
While most installations will use only one Model 77B Control Console, up to four can be connected to a Model 76B Central Controller. This provides multiple users with full control over a facilities' monitor system. The Model 76B can provide power for the first two Model 77B units while an external 12 volt DC source is required for a third and fourth unit. The interconnecting cables use 9-pin D-subminiature connectors to carry RS-485 data and DC power.Additional Details
The Model 77B provides four buttons and associated LEDs for selecting the input source to be monitored. The buttons are designed such that up to six unique input choices are available. Using the Model 77B's configuration mode, each of the six input 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 monaural sources. This is especially useful in broadcast applications where a 2-channel AES3id source may carry two independent monaural signals. To highlight this powerful feature: the Model 77B allows independent monitoring of the two channels associated with a single AES3id source. Broadcast master control applications can greatly benefit from this configuration flexibility.
The surround monitor output level can be controlled by way of a large, easy-to-use rotary control. The control, actually a digital encoder, allows level selection in precise 0.5-dB steps. The auto mute all function causes the monitor output channels to automatically mute whenever the output level is set to its minimum position. Using the reference level function, the monitor output level can be set to a pre-configured value. This is provided for audio-with-picture applications that require a specific monitor output level. The reference level is easily configured by taking an electronic "snapshot" of the desired monitor output level. For operator confirmation a 4-digit LED readout can display the level of the surround monitor output channels. To match the needs of a facility, it can be configured to display either the attenuation level or the sound pressure level (SPL).
The dim function allows the surround monitor output level to be reduced by a fixed dB amount. The dim level is configured from among four available values. A mute all function allows all surround monitor output channels to be simultaneously muted. The channel solo section provides individual surround channel monitoring control, allowing a single channel to be monitored while the others are automatically muted. Multiple channels can also be simultaneously selected for "soloing."
A special solo mode is also provided, called channel pop solo, which offers a unique aid in monitoring audio material. Channel pop solo allows the level of a single channel to be raised while the level of the other channel is reduced. This helps to emphasize the content on one channel without fully muting the others. Broadcast applications can benefit from the channel pop solo mode, allowing, for example, the center channel to be highlighted while still maintaining some level on the other channels. The amount of level increase-the "pop"-as well as the amount of attenuation can be configured to meet the needs of specific applications or users.
Two functions allow the input sources to be checked for level or phase inconsistencies. The 5.1 to stereo downmix function is used to create a stereo signal from the selected surround (5.1) source. The stereo to mono downmix function allows audio on the left and right channels to be added (summed) and monitored on the center output channel. The two downmix functions can be simultaneously enabled, allowing a surround source to be checked for mono compatibility.
In addition to the surround (5.1) monitor output, a stereo (2-channel) auxiliary monitor output is also provided. A stereo signal, connected to stereo input C on the Model 76B Central Controller, can be routed to the auxiliary output. A pushbutton on the Model 77B Control Console allows on/off control of the signal; no level control or signal modification takes place. The auxiliary output feature can be useful in special applications, e.g., in a broadcast control room setting where an audio signal, such as site-event cue signals, needs to be monitored by way of an independent set of loudspeakers.
For flexibility, the StudioComm for Surround system is designed to easily integrate with equipment such as production intercom systems, on-air or recording tally signals, audio consoles, and film motion-control electronics. Three remote-control input functions are provided: mute all, dim, and auxiliary output on/off. By providing access to these functions, talkback or slate activity from an audio console or other communications system can control the level of the surround monitor output or enable to the auxiliary output.Model 77B Control Console Specifications
- Application: up to four Model 77B Control Consoles can be connected to Model 76B Central Controller
- Power: 12 volts DC, maximum current 100 milliamperes, provided by Model 76B Central Controller
- Control Data: RS-485
- Data Format: 8 data bits, no parity, 1 stop bit (8-N-1)
- Data Rate: 115.2 k baud
- Connector: 9-pin D-subminiature female
- Dimensions (Overall):
- 7.20 inches wide (18.3 cm)
- 2.20 inches high (5.6 cm)
- 5.40 inches deep (13.7 cm)
- Weight: 1.7 pounds (0.8 kg)