Nuomm NEWSCASTER VT2 - Table 17: VSB Data Rates

NewsCaster VT2 Operation
M17-0002-01A Rev 0.0 58 User Manual
VSB PARAMETERS
1. Type - provides several different methods
of modulating the signal for transmission:
• 2VSB
• 4VSB
• 8VSB
• 8VSB-T
2. Bandwidth - The bandwidth is the span
or width of a carrier frequency. Under the
Bandwidth sub-menu, the user can select the
size of the carrier bandwidth. The options
for this sub-menu are:
• 6 MHz
• 7 MHz
• 8 MHz
BW = 6 MHz
Data Rate
(Mbit/s)
2 VSB 9.7
VSB
4/8T VSB 19.4
8 VSB 29.1
BW = 7 MHz
Data Rate
(Mbit/s)
2 VSB 11.3
VSB
4/8T VSB 22.6
8 VSB 33.9
BW = 8 MHz
Data Rate
(Mbit/s)
2 VSB 12.9
VSB
4/8T VSB 25.5
8 VSB 38.8
Table 17: VSB Data Rates
Note: the data rate for non-Trellis
coded 4 VSB is the same as 8 VSB
with Trellis coding (8T VSB).
8T VSB @ 6MHz is the ATSC
standard.
ENCODER MENU
The Encoder Menu allows the user to adjust
the MPEG Encoder’s operating parameters.
The menu accesses four sub-menus. They
are:
• Audio
• Video
• Table
• GOP
Audio Settings
The Audio Settings allow the user to select
the audio scheme to be used with the MPEG
Encoder. After entering the Audio Menu,
select either Audio 1 or Audio 2 (if
configured for two digital audios). After
selecting the audio channel, there are four
parameters that can be set:
1. Input - (Line [analog source], Tone [self-
generated source], AES/EBU [digital
source], and Off.
2. Sample Rate - the rate is set at 48 kHz
and is not changeable.
3. (Input) Level (L) - sets the left-channel
audio input level to the encoder from –6 dB
to +6 dB.
4. (Input) Level (R) - sets the right-channel
audio input level to the encoder from –6 dB
to +6 dB.