Configuring the Internal Baseband Source
R&S
®
SMW200A
270User Manual 1175.6632.02 ─ 30
Clock Input Slope ← Settings for Data Source = External
Sets the polarity of the active slope of an externally applied clock signal.
Custom digital modulation with external serial data (Data Source > "External"): A
higher bit modulation extern serial data requires a reference symbol clock signal to
generate a bit clock out of it.
●
This parameter sets the active edge of the symbol clock.
●
To set the active edge of the bit clock, use the parameter Bit Clock Slope.
●
Observe the impact of this parameter on the preview graphic in the "Baseband >
Custom Digital Mod > Data Source" dialog.
See also "External Modulation Data" on page 226.
Remote command:
[:SOURce<hw>]:INPut:TM:CLOCk:SLOPe on page 953
Bit Clock Slope ← Settings for Data Source = External
Option: R&S SMW-B10
Sets the active edge of the bit clock.
Timing deviations between the clock and the data signals, that are smaller than ± 1/16
of the clock period, are:
●
Automatically corrected
●
Indicated with the parameter Clock to Data Time Deviation
Observe the impact of this parameter on the preview graphic.
Remote command:
[:SOURce<hw>]:BB:DM:SMODulation:CLOCk:SLOPe:BIT on page 995
Bit Order ← Settings for Data Source = External
Sets the bit order, LSB or MSB first, used to process the externally supplied higher bit
modulation serial data.
Remote command:
[:SOURce<hw>]:BB:DM:SMODulation:BORDer on page 994
Clock to Data Time Deviation ← Settings for Data Source = External
Indicates timing deviations between the clock and the data signals. Timing deviations
that are smaller than ± 1/16 of the clock period are automatically corrected.
See also "External Modulation Data" on page 226.
Remote command:
[:SOURce<hw>]:BB:DM:SMODulation:CDTDeviation on page 994
Throughput Delay ← Settings for Data Source = External
Indicates the time delay between the active clock edge for the extern data and the cen-
ter of the modulation symbol (associated with this data item) on the RF connectors,
see Figure 5-13.
Generating Custom Digital Modulated Signals
To Next Page
Loading...