Cobalt Digital COMPASS 9035 Analog and SDI Input to SDI Output Converter - Manual (Page 11)

9035-OM (V4.4) 9035 PRODUCT MANUAL 1-7
Introduction
9035 Functional Description
Video Processor Description
The 9035 video subsystem also provides the functions described below.
Video Processor
The 9035 provides full color processing control (luma gain and lift, chroma
saturation, and color phase) of the output video.
Frame Sync Function
This function provides for frame sync control using either one of two external
Ext. Framesync Reference IN (1,2) reference signals distributed with the card
frame, or the input video as a frame sync reference.
This function allows horizontal and/or vertical offset to be added between the
output video and the frame sync reference.
A video/audio delay offset function allows adding or reducing audio delay
from the matching video delay. This function is useful for correcting lip sync
problems when video and audio paths in the chain experience differing
overall delays. A Reset Framesync function resets the frame sync following
any horizontal or vertical offset changes, clearing any buffered audio and
video and re-establishing the frame sync. The 9035 re-establishes video/audio
sync following framesync changes by applying an offset in small, progressive
amounts to provide a seamless, glitch-free retiming.
In the event of framesync loss of signal, this function provides for disabling
the video or going to a desired color raster.
(9035-DEC only) When Dolby ® data is received and actively routed into
embedded or discrete AES output channels, the frame sync function delays
the video by one frame (as required by the Dolby
® decode processing delay)
to maintain video/audio sync.
Timecode Inserter
(See Figure 1-2.) This function provides for the enable or disable of timecode
insertion, and selects and prioritizes among analog VITC, SDI VITC, and SDI
ATC timecode sources.
The function also allows the selection of the ancillary data line number where
the HD-SDI ATC data is stored when the output is HD.
Option +LTC allows bidirectional transfer and conversion
between VBI formats over SDI and audio LTC, as well as RS-485 LTC.
Audio LTC can be received or sent over a selected balanced analog audio
input, or as digital audio over a selected embedded or AES input.