EDIT Menu

1.Select Shift Register Generator... from the side menu.

2.Select User defined Code Config... from the sub menu.

3.Define the codes as desired. For the basic operations used when defining codes, see ªUser defined Code Config...º on Page 3 -110.

4.Select Go Back to return to the Shift Register Generator... menu.

5.Select Register Config... from the side menu.

6.Set the values for Register Length and Point/Step as well as the register value and tap.

7.Press the CURSOR button to select Code menu item. A knob icon will appear in the upper left side of the Code selection menu.

8.Turn the general purpose knob to select user defined.

9.Press O.K. in the sub-menu to confirm the settings. The Shift Register Generator... menu will automatically reappear.

10.Using the general purpose knob, define the data line and area where the pattern will be inserted.

11.Press Execute in the sub-menu. The result will be inserted between the cursors on the data line selected in the previous step.

Creating the M Series Pseudo￿Random Signal. An M series pseudo-random signal has a length of 2n-1 assuming the number of levels for the shift register is n. In this example, we will create an M series pseudo-random signal of 215-1 bits (15 levels) with 1 point for each step. This signal is included on the Sample Waveform Library Disk that came with the AWG2021.

1.Select Setting from the bottom menu.

2.Select Waveform Points from the side menu. Then set the waveform point size to 32,767 using the numeric keys. The waveform point size needed to display all the bits of the pseudo-random signal is given by the following formula:

(Value for Point/Step) ⋅ (2n-1)=1 ⋅ (215-1)=32,767

3.Select Shift Register Generator... from the third page of the side menu (More 3 of 3).

4.Press the CURSOR button on the front panel.

5.Using the general purpose knob, move the vertical bar cursors to designate the area to which pseudo-random signals are inserted. In this example, we will set the left cursor to point 0 and the right cursor to point 32,766.

AWG2021 User Manual

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