User Manual 3155ArbConnection 3-13Parameters The Parameters group contains buttons for adjusting Amplitude, Off-set, and active segments. The values exhibited in this group are ex-actly the same as in the Main Panel, so every time you change am-plitude and offset in the Parameters group, the other panels are up-dated automatically. You can also select the active segment from thisgroup.To access the required parameter, click on the button below until theLED next to the required parameter turns on. The value that is asso-ciated with the lit LED is displayed on the digital display. You can usethe dial, keyboard, or the [↑] [↓} keys to adjust the readout to the re-quired setting. After you modify the reading, press Execute to updatethe 3155 with the new reading.NoteThe normal color of the digital reading is dark blue. Ifyou modify the reading, the color changes to a lightershade of blue, indicating that the 3155 has not been up-dated yet with the new parameter. Pressing Execute up-dates the instrument and restores the color of the digitalreadout to dark blue, indicating that the displayed valueis the same as the generator setting.Also note that the digital readout has an autodetectmechanism for high and low limits. You cannot exceedthe limits if you are using the dial but you can if you usethe keypad. In that case, the program will not allow thedownload of an illegal parameter.Figure 3-34, The Arbitrary & Sequence Panel
