Broadcast Devices, Inc. DAB-300 Digital Audio Broadcast *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.
Table of Contents I. Basic Description 3 II. DAB-300 Operational Description 3 III. Remote Control Operation 3-4 IV. Input Mode Selection Menu System 4-5 V. Audio I/O Connector Diagrams 6-7 VI. Remote Control Connector Diagrams 8-9 VII. DAB-300-DAS Block Diagram 10 VIII. Frame Rate Conversion Switch Selection 11 IX.
I. Basic Description The DAB-300 is a dual 4-channel audio switch intended for simultaneously switching parallel program audio feeding analog and digital broadcast transmitters where synchronous timing such as in IBOC operations is important to maintain. It functions similar to a 4 position dual pole switch in that when audio to the analog transmitter is switched, the output feeding the digital transmitter is switched to the corresponding program source for the analog transmitter.
closure between the GPI pin corresponding to the desired input pair and control common will cause that input pair to be routed to that output. Likewise the open collector status outputs will float for the unselected channel pairs and be pulled low for the status output corresponding to the selected input pair. Refer to section VI. Remote Control Connector designation chart on page 9 for connection information. IV.
Input Invert Control modes are automatically saved when selected. To exit this menu press the F1 key to return to the main menu.
Push the F3 key a third time to enable / disable the auto-return function and to set the auto-return time. The auto-return function will cause the DAB-300 to return to the channel pair which was selected prior to a loss of audio detection and subsequent autoswitching. Using the up and down arrow keys intervals ranging from 1-10 minutes may be selected or the auto-return function may be disabled. A 4th press of the F3 key will move to the Audible Alarm Config menu.
INPUT CHANNEL 1 2 3 4 5 6 7 8 TYPE DIGITAL DIGITAL DIGITAL DIGITAL ANALOG ANALOG ANALOG ANALOG LOCATION AES 1 AES 2 AES 3 AES 4 ANALOG IN 1-2 (L/R) ANALOG IN 3-4 (L/R) ANALOG IN 5-6 (L/R) ANALOG IN 7-8 (L/R) AES and Analog L/R Input Version INPUT CHANNEL 1 2 3 4 5 6 7 8 TYPE DIGITAL DIGITAL DIGITAL DIGITAL ANALOG ANALOG ANALOG ANALOG LOCATION AES 1 AES 2 AES 3 AES 4 COMPOSITE BASE BAND 1 COMPOSITE BASE BAND 2 COMPOSITE BASE BAND 3 COMPOSITE BASE BAND 4 AES and Composite Input Version INPUT CHANNEL 1 2
VI.
K1 AUDIO ALARM RELAY 1 +5V CIT J1031C5VDC.15S K2 AUDIO ALARM RELAY 2 +5V CIT J1031C5VDC.15S K3 AUDIO ALARM RELAY 3 +5V CIT J1031C5VDC.15S K4 AUDIO ALARM RELAY 4 AUDIO ALARM RELAY K1 K2 K3 K4 K5 K6 5 K7 K8 +5V CIT J1031C5VDC.15S K5 +5V AUDIO ALARM RELAY 6 AUDIO ALARM CIT J1031C5VDC.15S K6 +5V 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 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 CIT J1031C5VDC.
VII.
VIII. Frame Rate Conversion Switch Selection The DAB-300 has active frame rate conversion on all AES3 digital inputs. The unit can accept sample rates from 8 KHz to 96 KHz. The frame rate converter then up or down converts the sample rate to the selected sample rate. The DAB-300 is capable of outputting 32, 44.1 or 48 KHz sample rates. The factory default sample rate is 44.1 KHz. To change the sample rate to either 32 or 48 KHz refer to the diagram below.
IX. 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.
Broadcast Devices, Inc. reserves the right to change materials, specifications, and features from time to time. www.broadcast-devices.com Broadcast Devices, Inc. 2066 E. Main Street Cortlandt Manor, NY 10567 Email: Customer.Service@broadcast-devices.com (914) 737-5032 Tel. 1 (914) 736-6916 Fax.
