evertz 3025EMC - Determining the I;O Frame Delay of the 3025 Emc; Table 9-3: I;O Frame Delay with Dolby-E Options

3025EMC Master Control Switching & Channel Branding
Revision 3.0.3 Page 201
9.5. DETERMINING THE I/O FRAME DELAY OF THE 3025EMC
Depending on the configuration of the 3025EMC, the video/audio processing delay through the system
changes. Assuming no additional frames have been added in the channel configuration (see section
4.3.8). The default delay with no Dolby-E Decoding or Encoding enabled is 2 video frames.
The DVE ordering options (either DVE-2D, DVE-2D-2 or No DVE) and the DVE configuration (see
section 4.4.4 for details on DVE Configuration) do not affect the frame delays through the channel.
For details of the frame delays refer to Table 9-3 below:
VIDEO STANDARD & DELAY
Configuration
720p
1080i
625i
525i
No Dolby-E
Modules Enabled
(Default)
2F 2F 2F 2F
No Dolby-E
Modules Enabled
(+1 Frame Delay)
3F 3F 3F 3F
Dolby-E Decoders
Only Enabled
(Default)
3F 2F 2F 2F
Dolby-E Decoders
Only Enabled
(+1 Frame Delay)
4F 3F 3F 3F
Dolby-E Decoders
& Encoder(s)
Enabled
(Default)
5F 3F 3F 3F
Dolby-E Decoders
& Encoder(s)
Enabled
(+1 Frame Delay)
6F 4F 4F 4F
Dolby-E
Encoder(s) Only
Enabled
(Default)
3F 2F 2F 2F
Dolby-E
Encoder(s) Only
Enabled
(Default)
4F 3F 3F 3F
Table 9-3: I/O Frame Delay with Dolby-E™ Options
Up to a maximum of 5 additional frames of I/O (video/audio) delay can be added to the system. These
can be added to the system regardless of the Dolby-E configuration. In the above table only +1 frame of
user added delay has been shown.
Regardless of the frame delay through the channel, video/audio lip sync is maintained at the output.