R&S SMCVB-K157 User Manual page 15

®
R&S SMCVB-K157
The tab displays the information on the input signal.
Settings:
Packet
Max. Useful Data
Measured Data
Useful Data
Packet Length
Requires "Source > External".
Displays the packet length of the external transport stream in bytes.
If the packet length does not match the specified length, the output signal is erroneous.
"Packet Length > Invalid" is displayed.
"188"
"204"
"Invalid"
Remote command:
[:SOURce<hw>]:BB:DVBC:PACKetlength?
Max. Useful Data Rate
Requires "Source > External/TS Player".
Displays the maximum data rate, that is derived from the current modulation parameter
settings.
The value is the optimal value at the TS input interface, that is necessary for the modu-
lator.
Remote command:
[:SOURce<hw>]:BB:DVBC:USEFul[:RATE]:MAX?
Measured Data Rate
Requires "Source > External".
Displays the measured value of the data rate r
●
External transport stream including null packets input at "User 1" connector
●
External transport stream including null packets input at "IP Data/LAN" connector
(TSoverIP)
The value r
r
meas
Remote command:
[:SOURce<hw>]:BB:DVBC[:INPut]:DATarate?
Useful Data Rate
Requires "Source > External/TS Player".
User Manual 1179.4686.02 ─ 01
Length............................................................................................................... 15
Rate.................................................................................................. 15
Rate..................................................................................................... 15
Rate...........................................................................................................15
188 byte packets specified for serial input ("Input > TS IN") and paral-
lel input ("Input > IP").
204 byte packets specified for serial input ("Input > TS IN") and paral-
lel input ("Input > IP").
Packet length ≠ 188 bytes, 204 bytes, i.e. the length is not as speci-
fied.
equals the sum of useful data rate r
meas
= r + r
useful 0
DVB-C configuration and settings
Input Signal settings
on page 49
on page 50
of one of the following:
meas
and the rate of null packets r
useful
on page 50
:
0
15