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DAI-3206 Instruction Book
Revision 6
I R T Electronics Pty Ltd A.B.N. 35 000 832 575
26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA
National:
Phone: (02) 9439 3744
Fax: (02) 9439 7439
International:
+61 2 9439 3744
+61 2 9439 7439
Email: sales@irtelectronics.com
Web:
www.irtelectronics.com
IRT Eurocard
Type DAI-3206
Digital Audio Inserter for 270Mb/s SDI
Designed and manufactured in Australia
IRT can be found on the Internet at:
http://www.irtelectronics.com
www.irtelectronics.com
Page 1 of 12
3206-DAI_ib_Rev6.doc
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Table of Contents
Summary of Contents for IRT DAI-3206
- Page 1 +61 2 9439 3744 +61 2 9439 7439 Email: sales@irtelectronics.com Web: www.irtelectronics.com IRT Eurocard Type DAI-3206 Digital Audio Inserter for 270Mb/s SDI Designed and manufactured in Australia IRT can be found on the Internet at: http://www.irtelectronics.com www.irtelectronics.com Page 1 of 12 3206-DAI_ib_Rev6.doc...
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Page 2: Revision History
DAI-3206 Instruction Book Revision 6 IRT Eurocard Type DAI-3206 Digital Audio Inserter for 270Mb/s SDI Revision History Revision Date Change Description Applicable to: 20/03/2001 Original Issue. S/N: ≥ 0110001 03/12/2001 Cleanup and update of spec sheet before release. S/N: ≥ 0110001... -
Page 3: Table Of Contents
Page Revision History Operational Safety General Description Technical Specifications Technical Description Configuration Description of DAI-3206 Modes Installation Front and rear layouts Maintenance & Storage Warranty & Service Equipment return This instruction book applies to units later than S/N 0307001. Operational Safety:... -
Page 4: General Description
2 AES signals, 4 analogue audio signals, or a combination of 1 AES and 2 analogue audio signals may be inserted into an existing SDI video stream. Each DAI-3206 is capable of inserting one audio group (2 AES signals – 4 channels). Group position selection is made by the front panel local control. -
Page 5: Technical Specifications
Power consumption <7 VA. Temperature range 0 - 50° C ambient. Mechanical Suitable for mounting in IRT 19" rack chassis with input output and power connections on the rear panel. Finish: Front panel Grey background, black lettering & red IRT logo. -
Page 6: Technical Description
DAI-3206 Instruction Book Revision 6 Technical Description Audio Packet Distribution Groups are embedded in non-switching lines with each group residing in a fixed number of bytes from the End of Active Video (EAV) flag. Each group contains either 3 or 4 AES words in length. Preserving this distribution simplifies insertion or removal of audio groups. -
Page 7: Configuration
DAI-3206 Instruction Book Revision 6 Configuration Adjustments: Left 2 analogue audio input level adjustment Right 2 analogue audio input level adjustment Left 1 analogue audio input level adjustment Right 1 analogue audio input level adjustment Links: Link Normal Function LK 1 Not Used (Leave OUT). -
Page 8: Description Of Dai-3206 Modes
This mode is probably the most confusing and it is not recommended in favour of MODE 7. This was the original distribution mode of the DAI-3206. In this mode the audio is synchronous to the video, however, no attempt to compensate (pre-load the receiver buffer) for the absence of audio packets during in the vertical interval is performed. -
Page 9: Installation
Indicators and alarms The alarm output on the rear of the DAI-3206 indicates a loss of 270 Mb/s data or power failure. The alarm state is indicated by a contact closure, which is available on J3A of the rear assembly. - Page 10 DAI-3206 Instruction Book Revision 6 SDI Video: Input: The SDI input is a single BNC connector terminated in 75 Ohms. The input equaliser compensates automatically for losses of up to 250 metres of high quality 75 Ohm coaxial cable. Performance tests are made using Belden 8281 cable as a reference. Actual results and bit error rates will depend on the quality of the cable and the noise environment as well as the quality of the originating equipment.
- Page 11 DAI-3206 Instruction Book Revision 6 Front & rear panel connector diagrams The following front panel and rear assembly drawings are not to scale and are intended to show connection order and approximate layout only. DA I -3 2 0 6...
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Page 12: Maintenance & Storage
For situations when “No Fault Found” for repairs, a minimum charge of 1 hour’s labour, at IRT’s current labour charge rate, will apply, whether the equipment is within the warranty period or not.
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