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7700 MultiFrame Manual
7721AE8-DEE-HD HD-SDI/SD-SDI Audio Embedder with Dolby Encoder
2.2.
VIDEO REFERENCE
The input video reference can be used to properly phase the Dolby-E output. For proper phasing of the
Dolby Encoder, the video reference must be locked to the input video. The video reference should only
be an interlaced reference, and the frame rates must also match with the input video. In the case of 720p
input video, interlaced reference signals of half the frame rate can be used (for example, 720p/59.94
NTSC bi-level or 1080i/59.94 tri-level reference).
REFERENCE: This BNC is used for connecting a bi-level or tri-level sync reference and is auto-detected
by the module. Jumper J5 selects whether the reference input is terminated to 75 ohms
(default state) or high impedance (refer to section 7.3 for jumper location).
2.3.
AES INPUT AND OUTPUT AUDIO CONNECTIONS
Eight unbalanced AES inputs and eight unbalanced AES outputs are provided on 8 BNC connectors on
the two high density DB-15 connectors labelled AES IN and AES OUT. These inputs and outputs are
used for unbalanced AES signals conforming to SMPTE 276M. The eight AES input channels can be
used as inputs in addition to the de-embedded audio. Processed audio can be output as eight AES
channels (refer to Table 2-1 and Table 2-2 for the DB-15 connector pin assignments).
Name
GPI2
AES In 2
GPI1
AES In 6
AES In 5
AES In 1
AES In 8
AES In 7
AES In 4
AES In 3
GND
Page-4
Description
Reserved for Future Use
Reserved for Future Use
Reserved for Future Use
Reserved for Future Use
Reserved for Future Use
Reserved for Future Use
AES Input 2 - Unbalanced
Reserved for Future Use
AES Input 6 – Unbalanced
AES Input 5 – Unbalanced
AES Input 1 - Unbalanced
AES Input 8 – Unbalanced
AES Input 7 – Unbalanced
AES Input 4- Unbalanced
AES Input 3- Unbalanced
Ground
Table 2-1: AES IN Audio Connector Pin Assignments
Revision 1.2
DB-15 Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Shell
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