Service manual

Installation and Service Manual379
Section 11
Analog Input Processing
TRX-VI-33100 Module
The TRX-VI-33100 video input module consists of a 16-input “uni-
versal” base board (VI-33100) and a 16-input digital-only mezzanine
boar
d (HI-33201).
The VI-33100 universal base board auto-s
enses and accepts 16 com-
posite analog SD, digital SD, or digi
tal HD signals in any combination
and passes them in digital SD or digital HD form (as appropriate) to the
Trinix matrix board. When analog signals are received, an extensive set
of gain, phase, filtering, and other adjustments are available for each
signal. These adjustments are summarized below.
Analog Processing Control
Adjustments for analog signals connected to the VI-33100 base board
include the following:
• Save/recall settings
•Mono mode
•Setup on/off
•Chroma kill
• Comb/trap filter
•AGC on/off
• Manual gain control
• ACC on/off
• Manual chroma
control
• Blank video (per
VBI line)
• Add setup (per VBI
line)
• Reserve VBI line for
data
• Horizontal timing
• Detail enhancement
• Display channel
status
• Insert Error Detec-
tion and Handling
(EDH) data
• Contrast / Y gain
• Saturation /
chroma gain
• Brightness / Y
offset
•Hue / chroma
phase
• Notch decode on/
off (VBI)
• Chroma kill (VBI)