Broadcast Devices, Inc. ATB-300 Audio Tool Box *Digital/Analog Audio Switcher DA Operations Quick Start Guide Broadcast Devices, Inc. 2066 E. Main Street Cortlandt Manor, NY 10567 Tel. (914) 737-5032 Fax. (914) 736-6916 World Wide Web: www.Broadcast-Devices.com Rev D.
Table of Contents I. Basic Description 3 II. ATB-300 Operational Mode Descriptions A. Memory Programming B. Silence Interval Programming C. Silence Threshold Programming 3–7 4 4 5 III. Remote Control Operation 7 IV. Input Mode Selection Menu System 7-9 V. Audio I/O Connector Diagrams 9 - 10 VI. Remote Control Connector Diagrams 11 VII.
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Figure 1 - ATB-300 Manual Mode Display In manual mode the user may also program the priority memories, the silence interval and the relative audio threshold which triggers the active / inactive determination. M A NU A L CH1 SELECTED I NPU T: CH 1 NO A U DI O A. Memory Programming PRI 1 CH 1 NO A U DI O I NPU T: CH 1 NO A U DI O Figure 2 - ATB-300 Priority Memory Programming Mode Display Pressing the F2/F5 key will enter the memory programming mode.
Pressing the F3/F6 Key will allow programming the silence interval. Select the desired interval using the UP and DOWN arrow keys. The interval can be set to any time between 30 and 600 seconds (Default = 60 seconds) using the UP and DOWN arrow keys. Pushing the ENTER key will put this setting into non-volatile memory. Pushing the red X key will return to the original value before it was changed. NOTE: the ENTER key MUST be pushed to retain this setting after power is cycled.
A U TO CH1 A U DI O OK PRI 1 CH 3 NO A U DI O Figure 5 - ATB-300 Auto Mode Display When the ATB-300 detects an audio level below the silence threshold for the pre selected time interval it will look at the priority memories and switch the lowest priority channel which is active to the output. The display will indicate a loss of audio on the top line of the LCD and will indicate the input which was switched to the output on the lower line along with its activity status.
4. Place the unit back into the AUTO mode by pressing F1 twice. The first press of F1 takes the unit out of the programming mode and into MANUAL. The second press of F1 places the unit back into AUTO mode. III. REMOTE CONTROLLED OPERATION The ATB-300 provides remote inputs to select between manual and auto modes, reset a fault warning, selection of an input and to enable/disable remote operation. Open collector status outputs are provided to indicate the currently selected input channel.
Press F4 once: Input Mode Selection Pushing the up arrow/down allows you to select the input channel to be changed: Pushing the left/right arrow buttons allows selection of the following input modes: OFF Stereo - Factory Default LR Swap - L/R Channels Swapped Mono L - L input fed to both L & R outputs Mono R - R input fed to both L & R outputs L + R - L & R inputs are summed and fed to both L & R outputs. The input mode is automatically saved when selected.
ATB-300 Factory Default Recovery As with any programmable device, it is possible that the user would like to quickly return to the “factory default” settings. To return the ATB-300 to its factory configuration remove AC power to the unit. While holding the red “X” key, restore AC power until the display indicates “FACTORY DEFAULT”. V.
ANALOG AUDIO - INPUT & OUTPUT PINOUTS ARE IDENTICAL 1 14 2 15 3 16 4 17 5 18 6 19 7 20 8 21 9 22 10 23 11 24 12 25 13 CH8P CH8N CH8 RIGHT CH7P CH7N CH8 LEFT CH6P CH6N CH 7 RIGHT CH5P CH5N CH 7 LEFT CH4P CH4N CH 6 RIGHT' CH3P CH3N CH 6 LEFT CH2P CH2N CH5 RIGHT CH1P CH1N CH5 LEFT DB-25 ATB-300 AUDIO INPUT MAPPING INPUT CHANNEL 1 2 3 4 5 6 7 8 TYPE DIGITAL DIGITAL DIGITAL DIGITAL ANALOG ANALOG ANALOG ANALOG 10 LOCATION AES 1 AES 2 AES 3 AES 4 ANALOG IN 1-2 (L/R) ANALOG IN 3-4 (L/R) ANALOG
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VII. Warranty Broadcast Devices, Inc. products are warranted against failure due to faulty materials or workmanship for a period of one year from the date of shipment to the ultimate user. The warranty covers repair or replacement of defective parts at the factory, provided the unit has been returned prepaid by the user. All shipments to the factory shall have affixed to the outside of the container a return authorization number obtained from the factory.
