Press to set the RF Span. If you use the numeric keypad to enter a value, then the submenu keys change to Units of GHz, MHz, kHz, or Hz. Pressing the
Enter key is the same as pressing the MHz submenu key. You may also use the rotary knob or the arrow keys, then press the
Enter key.
Press to increase the Span. If starting at 10 kHz, the span increases to 20 kHz, 50 kHz, 100 kHz, 200 kHz, 500 kHz, 1 MHz, 2 MHz, 5 MHz and 10 MHz. Each press of this submenu key increases the span to one of these listed values.
Press to decrease the Span. If starting at 5 MHz, then span decreases to 2 MHz, 1 MHz, 500 kHz, 200 kHz, 100 kHz, 50 kHz, 20 kHz, and 10 kHz. Each press of this submenu key decreases the span to one of these listed values.