Pressing the Shift key and then a number key selects the menu function that is printed in blue characters above the number key. The instrument that is shown in Figure: Keypad and Secondary Function Menus has controls that are identical to those on the Spectrum Master MS272xB.
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Not all Secondary Function Menus are active in all operation Modes. If any one of these 9 menus is available in a specific instrument Mode of operation, then it can be called from the number keypad. It may also be available from a main menu key or a submenu key. The Secondary Function Menus are: Preset (1), Calibrate (2), Sweep (3), Measure (4), Trace (5), Limit (6), File (7), System (8), and Mode (9).
