Ross HDC-8222A, Руководство пользователя

Страница: 10 / 52

1–2 • Introduction HDC-8222A User Manual (Iss. 02)
Overview
The HDC-8222A is a high quality 10-bit, HD-Down Converter with Serial Digital pass-through
and individual Aspect Ratio Controls for HD and SD inputs. The HDC-8222A bridges SMPTE
292 high definition (HD) and 259M-C standard definition (SD) signal formats; allowing high
density and low power conversion of HD signals.
The HDC-8222A will down-convert HD to SD serial component digital and analog composite
video. This unit can re-aspect the image with separate rules for HD and SD inputs, and adds 3:2
pull-down to 23.98 progressive segmented frame (pSF) or interlaced (i) inputs. In addition,
reticule overlays, for full aperture and safe area, in both 16x9 and 4x3 can be enabled, as well as a
center cross-hairs. Reticules can be separately enabled on the SD-SDI and composite outputs.
The image processing is full 10-bit using a 24-tap spatial filter. Down-conversions of HD to SD
signals are de-jittered to reduce the chroma phase jitter of the SD composite outputs.
The HDC-8222A also preserves several key non-video signals across a down-conversion or
ARC. Embedded audio is de-embedded at the input, delayed appropriately, and then embedded at
the output in the new format. Timecode signals (as VITC or as in SMPTE RP-188) are extracted,
delayed the appropriate amount, and then embedded in the output video. Standard definition
closed captioning data (NTSC Line 21) is decoded, delayed, and embedded in the output video,
regardless of aspect ratio correction.
With the 8320AR-1821 Full Rear Module, the HDC-8222A also supports audio de-embedding
with four analog audio outputs.
This product also provides full color proc control of the output video, with separate controls for
Gain, Lift, Saturation and Color Phase.
Features
The HDC-8222A also includes the following features:
• Preserves several non-video signals across a down-conversion or aspect ratio conversion
• Embedded audio is de-embedded at the input, delayed appropriately, and then embedded
at the output, in the new format
• Timecode signals, as D-VITC (SMPTE 266M) or as ATC (RP188), are extracted, delayed
the appropriate amount, and then embedded in the output video
• Closed captioning support: CEA-608 Line 21 style closed captioning or CEA-608 within
a CEA-708 packet, extracted and inserted into the output video
• Provides full color proc-amp control of the output video, with separate controls for Gain,
Lift, Saturation, and Color Phase
• Provides one dual-rate HD/SD-SDI input
• Optional four-channel analog audio de-embedding available with the 8320AR-1821 Full
Rear Module
• Depending the rear module used, the following outputs are provided:
› 8310AR-030 and 8320AR-030 Full Rear Modules — four re-clocked HD/SD-SDI
copies of the input, and four user selectable (SD-SDI or Composite) down-converted
HD or SD ARC outputs.
› 8320AR-1821 Full Rear Module — two re-clocked HD/SD-SDI copies of the input,
two user selectable (SD-SDI or Composite) down-converted HD or SD ARC
outputs, and four analog audio outputs.