Sets the width of the measurement window in GHz, MHz, kHz, or Hz. The center frequency and span are displayed in the message area at the bottom of the status window. The span can be entered with the keypad and then selecting a units (GHz, MHz, kHz, or Hz) submenu key, or by using the arrow keys to change an already selected frequency. Press
Enter to set the span, or press
Esc to restore the previous span setting.
Sets the span to 100 MHz on the current center frequency. Adjusts the center frequency if it is at the edge of the limit of the instrument.