 | Limit Line Type Press this submenu key to choose to have either limit line be absolute or be relative. This submenu key may be used at any time while working with limit lines. Absolute limit lines set the limit inflection points based upon the entered frequencies for each point. Relative limit lines set the limit inflection points relative to the current center frequency. Regardless of how a limit line is set up, saved, or recalled, it can be changed between absolute and relative by toggling with this submenu key. Limit Mirror On/Off Press this submenu key to turn the Limit Mirror feature On and Off. Many emission masks are symmetrical. The low frequency side is identical to the upper side. The Limit Mirror feature allows you to create half of the limit line and get the other half built automatically. This feature can work in either of two ways: Turn Limit Mirror on before beginning to build a limit line. As you add a point on either side of the center frequency, another point is automatically added on the opposite side of the center frequency. Leave Limit Mirror off until half of the limit line is built, then turn On Limit Mirror. The other half of the limit line is built automatically. Save Limit Pressing this submenu key opens a dialog to save the current upper and lower limit lines. You can name the saved limit line yourself or accept the name that is suggested by the instrument (which is based upon a previously saved name). If you did not intend to save the limit line, then press Esc to stop the dialog and avoid saving the limit line. Recall Limit Pressing this submenu key opens a dialog box to recall a saved limit line. The dialog box presents a list of saved limit lines. Highlight the desired limit line and press Enter. If you decide not to recall a limit line, then press Esc to stop the dialog. If the saved limit is a relative limit, then it is recalled centered about the current center frequency. If the saved limit is an absolute limit, then it is recalled to the frequency at which it was created. If you recall an absolute limit, and if it is off screen, then you will see the left or right limit off‑screen indicator on the edge of the screen. Back Press this submenu key to return to the Limit Menu. |