68
Issue 21
TX500 series technical manual
Switch
Labelled
Function
SW3
DELAY 0-15
FRAMES
Configures overall audio delay to compensate for use of DVE in
video path, 0 is no delay, 1 is 1 frame delay etc.
SW4
LEVEL 0-3
Sets audio level number in multi-level system, 1 is level 1, 2 is level
2 etc.
Jumpers
Jumpers
Labelled
Normal setting
PL9,10,11
BOOT LOADER/BOOT FLASH
Set to BOOT FLASH
5.2 Vision mixer configuration
STATUS
Pro-bel
STATUS
Pro-bel
3423
MIXER
3423
DSK1
3423
DSK2
3423
DSK3
3423
DSK4
3428
MIXER CONFIGURATION
CARD
The basic vision mixer consists of two card types, the 3423 Keyer/ Mixer and the 3428
configuration (config) card.
The 3423 provides the mixing and keying functions within the system, while the 3428
ensures the correct routing of the programme signal between these video processing
modules.
Embedded audio systems are supplied with an embedder (4425) and extractor (4429)
module, while the DVE option can also be supplied with a frame synchroniser, type 3403, to
compensate for the DVE insertion (framestore) delay. These optional modules are covered
in their technical manuals.
The simplified block diagram below shows the system architecture and signal path.