Crystal Vision
Introduction
The video delay remains fully adjustable over two complete fields. This allows the output
of the ADDEC-210 in synchronisation mode, to be timed into any edit suite irrespective
of the timing of the black and burst reference used.
Audio follow pulse
There is also a positive going external TTL level audio follow video (AFV) pulse output,
the duration of which reflects the current video delay. The AFV output can be used with
external audio delay processors such as the TAD202 if required.
Analogue video formats
The analogue video input can be selected to be composite PAL/NTSC and YC or
525/625-line component YUV/RGB. ADDEC-210 can accept an RGB input with sync
pulses on either all three components or Green alone. There is also an RGB external sync
input should the RGB video not have syncs present. Input standard selection is automatic
and will follow the input video. Data in the VBI (vertical blanking interval) of the
analogue composite input can be blanked or passed. NTSC- J and NTSC-M with or
without 7.5% IRE setup is also selectable when receiving an NTSC format video input.
Betacam input levels are also accepted.
Freezing the picture
When set to remote control the picture can be frozen and the freeze mode can be selected
from freeze frame, field 1 and field 2. In situations where there is movement between
fields a frame freeze may show movement judder. To prevent this, a field freeze which
works by repeating the same field, will produce a synthetic frame of video without
movement judder. However a field freeze is more likely to show jagged edges on near
horizontal lines.
Video Input loss behaviour
The ADDEC-210 output will cut to blue on loss of input video.
Status and control
Status and control of the ADDEC-210 is available using the board edge menu selection
switches and LEDs. Full function control and status reporting is also available from either
an active frame front or remote active control panel. PC control is also available using
Crystal Visions Statesman PC controller package.
ADDEC-210 User Manual R1.5
5
16 November 2018
