CDB61581

10

DS211DB2

11.5. Modify Unit Interval

The user modifies the data in the AWG RAM using

the Transmitter RAM UI Config window (see

Figure 3). At the top of this window are three radio

buttons used for selecting one of the three unit in-

tervals. At the lower right is another set of radio

buttons, one for each of the prestored waveforms in

ROM (config 0 through config f). After having se-

lected the desired UI and line configuration, click-

ing on the Read button will display the contents of

the given waveform in the Time Slot fields. These

values are displayed in hexadecimal format. The

user can modify these values by clicking on the se-

lection arrow and scrolling up and down through

the possible values. After making the necessary

modifications, the user clicks the “Save to UI” but-

ton to save the data for that UI to the PC’s memory.

When all three UI’s have been saved, the new val-

ues are written to the AWG RAM on the device by

going back to the Transmitter RAM Configuration

window and clicking on the Write to RAM button.

Notice that this window also has selections for the

6V pulse and Match Z buttons. These are dupli-

cates of the buttons in the LIU Configuration win-

dow. Clicking on these buttons sets or resets these

bits in the configuration registers.

These settings are reset to the initial state when the

window is closed. The Save Screen and Restore

Scrn buttons must be used if the user wishes to exit

this window and come back to the same setup.

Figure 3. Modify Unit Interval Window