Sine Systems AFS-3 User Manual download pdf

List Prices effective January 2012

Sine Systems, Inc. voice: (615) 228-3500

972 Main Street

fax: (615) 227-2367

Nashville, TN 37206-3614 www.sinesystems.com

Model ACU-1 Audio Control Unit and Accessories

The ACU-1 is an eight balanced stereo input by one stereo output audio switcher with level control capabilities via

RS232 commands. Input selection can be programmed to interlock or mix. The system also incorporates silence

sensors, parallel logic inputs, multiplex outputs, control relays, a clock/calendar and an optional temperature sensor.

While the switcher can be operated manually, the maximum power and flexibility is achieved by connecting one or

more ACU-1’s to a single serial data port of a host computer. The simple ASCII command structure allows for rapid

development of very powerful ‘one-off’ customized automation systems. Front panel indicators include left and right

VU meters, channel selection indicators and left and right silence alarm status indicators. Rear panel screw terminals

are mounted on removable connector boards.

Model # Description Price

ACU-1 Audio Control Unit—computer controlled 8 channel audio switcher $1799.00

ACU-1/CB Replacement Connector Board for ACU-1 39.00

ACU-1/TS Digital temperature sensor (optional) 49.00

Model AFS-3 Audio Failsafe

The AFS-3 Audio Failsafe is typically used to trigger an alarm on a remote control system or terminate transmission if

program audio fails. It monitors one or two audio signals and maintains a relay contact closure as long as audio is

present on at least one of the two audio inputs. When no audio is present on either input for a preset length of time,

the relay contacts open. The length of the delay is adjustable from 30 seconds to 5 minutes in 30-second increments

via rotary switch. Front panel indicators include power, system enabled, audio present and alert status. Controls

include a front panel defeat switch, rear panel delay adjustment and internal jumpers to select options such as an

audible alert and logic voltage on the output relay.

Model # Description Price

AFS-3 Audio Failsafe—terminate transmission on program audio failure $349.00

Model CAS-1 Con/Air Switcher and Accessories

The CAS-1 is a solution to the signal delay problem caused by digital processing and transmission equipment. Most

digital broadcast gear has an inherent delay on the order of 5 to 50 milliseconds. When this equipment is installed in

the ‘air’ feed, there will be a very short delay between the live audio and the air audio monitor. This delay is

particularly noticeable and most annoying during live breaks when the air staff hears their own voice delayed in their

monitor. The CAS-1 substitutes a local audio feed (not delayed) in place of the (delayed) air feed to the monitor

when the mic is on. An audio correlation circuit compares the two audio signals and switches the monitor to the air

feed if the signals are not similar. Additionally, controls for equalization and compression can be used to tweak the

monitor audio so that it sounds like the live air feed.

Model # Description Price

CAS-1 Con/Air Switcher—removes digital signal delay from headphone monitor $599.00

CAS-1/RK Rack Kit for CAS-1 39.00

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