ATSC-M/H Configuration and Settings
R&S
®
SMCVB-K161
15
User Manual 1179.1035.02 ─ 02
Stuffing
Requires "Source > External/TS Player".
Activates stuffing.
Note:
Due to the special slot structure, and because the trellis encoder must be reset
whenever there are exactly defined data packets, for error-free ATSC-M/H transmis-
sion, stuffing must never be enabled. However, to allow transmission of lower-rate data
streams, stuffing can be enabled. In the M/H state, however, the warning "M/H struc-
ture not found" is displayed cyclically.
"On"
The installed input interface provides the transport stream data rate
required for the current modulation parameters (regardless of the
input data rate of the external transport stream).
"Off"
The data rate of the transport stream source must match the data
rate required for the current modulation parameters.
The value equals the
Remote command:
[:SOURce<hw>]:BB:ATSM:STUFfing
Test Signal
Requires "Source > Test Signal".
Defines the test signal data.
Note:
The test signal contains no ATSC M/H data. Use test signals only for ATSC A/53
(8VSB) compatible receiver testing.
"Test TS Packet"
Standardized packet data used as modulation data in the transport
stream.
To configure the packet structure, select the side tab "Test Signal >
Test TS Packet". See also
"PRBS before Interleaver"
Pure pseudo-random bit sequence (PRBS) data used as modulation
data with no packet structure. PRBS data conforms with
specification.
To configure the PRBS type, select the side tab "Test Signal >
PRBS". See also
"PRBS before Trellis"
Pure pseudo-random bit sequence (PRBS) data used as modulation
data with no packet structure and interleaving. Modulation data is
directly fed to the trellis encoder.
"PRBS before Mapper"
Pure pseudo-random bit sequence (PRBS) data directly fed to the
mapper.
Three bits at a time in two's complement are assigned to the stages
-7, -5, -3, -1, 1, 3, 5, 7. Subsequent pilot insertion and VSB filtering
remain unaffected.
Remote command:
[:SOURce<hw>]:BB:ATSM:TESTsignal
Input Signal Settings
