220 Keysight E8357D/67D & E8663D PSG User’s Guide
Custom Real Time I/Q Baseband
Working with Data Patterns
This inverts the bit values that are positioned 4C through 4F. Notice that
hex data in this row has now changed to 76DB6DB6, as shown in the
following figure.
To Apply Bit Errors to an Existing Data Pattern User File
This example demonstrates how to apply bit errors to an existing data pattern
user file. If you have not created and stored a data pattern user file, first
complete the steps in the previous section,
“Creating a Data Pattern User File
with the Bit File Editor” on page 216
.
1.
Press
Apply Bit Errors
.
2.
Press
Bit Errors
>
5
>
Enter
.
3.
Press
Apply Bit Errors
.
Notice both
Bit Errors
softkeys change value as they are linked.
Using an Externally Supplied Data Pattern
In this procedure, an external real time data pattern is supplied through DATA,
DATA CLOCK, and SYMBOL SYNC connectors.
1.
Press
Preset
.
2.
Press
Mode
>
Custom
>
Real Time I/Q Baseband
>
Data
>
Ext
.
3.
Connect the real–time data to the DATA input.
4.
Connect the data clock trigger signal to DATA CLOCK input.
5.
Connect the symbol sync trigger to the SYMBOL SYNC input.
Bits 4C through 4F inverted
Hex Data changed
