R&S SMCVB-K161, User Manual

Page: 24 / 81

ATSC-M/H Configuration and Settings
R&S
®
SMCVB-K161
24 User Manual 1179.1035.02 ─ 02
Constellation
Displays the constellation.
The value "8VSB" conforms with specification ATSC A/153 .
Remote command:
[:SOURce<hw>]:BB:ATSM:CONStel?
on page 60
Roll Off
Displays the roll-off factor alpha (
α
).
The output signals are filtered with an FIR filter. In addition, they are pulse-shaped,
yielding a root raised cosine characteristic. A roll-off factor of 0.115 conforms with
specification
ATSC A/153 .
Remote command:
[:SOURce<hw>]:BB:ATSM:ROLLoff?
on page 60
M/H State
Enables/disables all ATSC-M/H elements of the FEC together.
"On" Outputs a signal in accordance with specification ATSC A/153 and
the network settings.
See
Chapter 4.3.2, "Network Settings" , on page 24.
"Off" Outputs a signal (8VSB state) in accordance with specification ATSC
A/53 .
Remote command:
[:SOURce<hw>]:BB:ATSM:STATe
on page 47
4.3.2 Network Settings
Access:
► Select "Coding > Network".
The tab provides network settings necessary to configure the "Coding".
The network settings comply with specification ATSC A/153 and require "Coding >
General > M/H State > On".
Coding Settings