Chroma Threshold
— This check box (see
on page 54) controls whether
the temporal algorithm should consider changes in the color (chrominance) of the
image. Selecting this check box provides better results when using digital simulation
type sources. However, this can increase the transmit bandwidth by up to 200%, so it
should be disabled on bandwidth sensitive systems.
NOTE:
The option is normally not required for video or camera type sources.
Motion (VN‑Matrix 2xx only)
— This drop-down list is used to adjust motion
compression. The value can be set from
0
to
15
, where
0
is no additional motion
compression and
15
is full motion compression. When enabled, motion detected on the
area of the screen is heavily compressed. This reduces bandwidth when the eye cannot
perceive significant detail due to the motion. When motion stops, the video continues at
the standard resolution preserving screen integrity.
Audio Compression panel (VN-Matrix 200/225 only)
NOTE:
The audio compression settings for the VNM 3
xx
series are located in the source
format menu (see
Ancillary Audio Panel (VN‑Matrix 3xx Only)
Compression
— VN-Matrix supports limited compression of S/PDIF audio sources.
This is controlled by the
Compression
setting (see
bus can carry two types of data: 2-channel uncompressed audio and encoded digital
data, the latter often in AC-3 (Dolby Digital) format. The following compression values
are supported.
Available Compression Settings
Compression
Stereo Audio Tracks
AC‑3 Data Track
No
compression
24 bit native data (2975 kbps) 24 bit native data (2975 kbps)
24-bit
to
16-bit
16 bit data, full sample rate
(1517 kbps)
16 bit data, zeros run length
encoded (430 kbps)
44
kHz
to
22
kHz
16 bit data, 1/2 sample rate
(784 kbps)
16 bit data, zeros run length
encoded (430 kbps)
44
kHz
to
11
kHz
16 bit data, 1/4 sample rate
(418 kbps)
16 bit data, zeros run length
encoded (430 kbps)`
VNM EC 200 • Device Configuration and Control
56
Summary of Contents for VNM EC 200
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