Rohde & Schwarz SMW200A - Page 284

Configuring the Internal Baseband Source
R&S
®
SMW200A
269User Manual 1175.6632.02 ─ 16
2. If higher order modulation is required, select for example "Modulation > Modulation
Type > PSK > QPSK".
Settings:
Data Source................................................................................................................ 269
Select Data List...........................................................................................................270
Select Control List.......................................................................................................270
Receiver State.............................................................................................................271
Settings for Data Source = External............................................................................271
└ Symbol Clock Slope/Clock Slope..................................................................271
└ Bit Clock Slope..............................................................................................272
└ Bit Order........................................................................................................272
└ Clock to Data Time Deviation....................................................................... 272
└ Throughput Delay......................................................................................... 272
└ Graphical illustration of the timing ratios between the data and clock signals
......................................................................................................................273
Local Connector Settings............................................................................................273
Data Source
Selects the data source (see Chapter 4.5.1.1, "Data, Clock and Control Signals and
Sources in the Baseband", on page 227).
The following data sources are available:
"All 0, All 1"
A sequence containing 0 data or 1 data is internally generated
"PRBS, PRBS Type"
Selects internally generated PRBS data in accordance with the IUT-
T. Use the parameter "PRBS Type" to define the length.
Remote command:
[:SOURce<hw>]:BB:DM:PRBS[:LENGth] on page 895
"Pattern"
Use the "Pattern" box to define a bit pattern with a maximum length of
64 bits.
Generating Custom Digital Modulated Signals