SEL-1FS1/SEL-2FS1 and SEL-1XD1/SEL-2XD1
Installation and Operation Manual
Installation, Operation, and Specifications
© 2015 Imagine Communications Corp.
Proprietary and Confidential.
Version 2.8 | Page 106
Synchronization Parameters
The main FS1 and XD1 boards perform sample rate conversion on 24 audio channel pairs. Additionally,
the AES expansion module provides another 8 channel pairs. Streams carrying
compressed
audio
automatically bypass the SRC block. The Sample Rate Conversion menus (
Audio Input Delay and Sync >
xxxSample Rate Conversio
n) make it possible for you to manually bypass SRCs on a per-pair basis in
situations where legacy equipment provides unreliable compressed audio signals.
Compressed audio will be supported only when the input audio and output video are locked, with some
tolerance for wander.
In the
Audio Tracking
parameters:
•
Off
disables the
Audio Tracking
feature
•
The
Frame Sync
option adds delay from the video frame synchronization, plus delay added by the
H-
Phase
and
V-Phase
parameters.
•
The
Frame Sync + Delay
option adds delay from video frame synchronization,
plus delay added by
the
H-Phase, V-Phase,
plus
Frame Delay
parameters
Global Audio Phase Reset
If a sample rate converter is bypassed and re-enabled, audio from this SRC's output may be out of phase
with other audio channels. To reset this phase for all audio channels, use the
Global Audio Phase Reset
parameter. In conjunction, use the
Global Audio Phase Alignment
to select the processing channel to
which the audio phase will be aligned. A brief audio disturbance will occur when you change the options
in these parameters.
Audio Proc Amp
The Audio Proc Amp includes all of the controls for the following functions:
•
Embedder, AES, and Expansion Gain
•
Embedder, AES, and Expansion Invert
•
Embedder, AES, and Expansion Mute
•
Embedder, AES, and Expansion Word Length
•
Embedder, AES, and Expansion Format
Also, in the
Other
category, it includes the following miscellaneous parameters:
•
V-Bit Enable
•
Audio Control Style (Mono or Stereo)
•
Audio V-Fade (clean audio hotswitch)
•
Audio LOV Output Mode (Pass or Mute)