Keysight M8194A 120 GSa/s Arbitrary Waveform Generator User Guide 69
M8194A Soft Front Panel 3
For Gaussian filters it is the BT (Bandwidth/symbol period product)
parameter. Some filter types do not require an additional filter
parameter.
• Data Source
This drop-down list allows the selection of different pseudo random
binary sequences as data sources for modulation. Choices are PRBS7
(Polynomial x7+x6+1), PRBS10 (Polynomial x10+x7+1), PRBS11
(Polynomial x11+x9+1), PRBS15 (Polynomial x15+x14+1), PRBS23
(Polynomial x23+x18+1), PRBS23p (Polynomial
x23+x21+x18+x15+x7+x2+1), and PRB31 (Polynomial x31+x28+1).
• Data Length
This edition field may be used to set a given data length to be
implemented by the modulated signal. This field defaults to the
maximum non-repeating length of the selected PRBS. It also defaults
to this value if the user types ‘0’ (Zero). Otherwise, the sequence will be
truncated when the number of bits set by this control is reached. If this
number is longer than the PRBS maximum length, the sequence will be
re-started as many times as necessary.
• I/Q Delay
This numeric edition field allows for the definition of the time skew
between the I and the Q baseband components. It can be used to
compensate or emulate timing misalignments caused by cabling,
external modulators and other devices. This control is activated only
when the Generate I/Q Data check box is selected. Delay is applied
differentially to both components.
• Gray Coding
This check box enables gray coding for the applicable modulation
modes.
Corrections Section
• File…
Opens a correction file selection dialog box. Default file extension is
CSV (Comma-Separated Values). The name of the successfully loaded
correction factors file is shown in the field located at the left of this
button. The accepted format for correction files may be found in the
Correction File Format section.
• Channel Specific Frequency and Phase Response
This check box activates the application of corrections based on
frequency-domain calibration data stored in the target instrument in
non-volatile memory. It improves flatness and linear phase distortions.
To Next Page
Loading...
