2-Port Transmission Measurement Guide : 2-port Transmission Measurement (Option 21) : Freq (Frequency) Menu
 
Freq (Frequency) Menu
Key Sequence: Freq
The tuning frequency range can be entered in several different ways depending upon what makes the most sense for the user or for the application. The center frequency and span can be specified, the start and stop frequencies can be entered, or a signal standard and channel number can be selected from the built-in list.
Frequency Menu
Start Freq
Press the Start Freq submenu key and enter the desired frequency using the keypad, the arrow keys, or the rotary knob.
Stop Freq
Press the Stop Freq submenu key and enter the desired frequency using the keypad, the arrow keys, or the rotary knob.
Center Freq
Press the Center Freq submenu key and enter the desired frequency using the keypad, the arrow keys, or the rotary knob.
Span
Press the Freq main menu key followed by the Span submenu key and enter the desired span. The Span menu is used to set the frequency range over which the instrument will sweep. The span can be set from 10 Hz to the maximum frequency range the instrument will support. See the product specifications for the maximum frequency. Span can also be set to zero span.
The submenu key shows the current value for span in units of GHz, MHz, kHz, or Hz. When the Span button is pressed, span becomes the active parameter and may be changed. Use the keypad, the directional arrow keys or the rotary knob to increase or decrease the span frequency. If the span is changed using the arrow keys, the span changes in a 1-2-5 sequence of the Frequency Step for each key press. See the Span Menu.
Note: In the above submenus, when entering a frequency using the keypad, the submenu key labels change to GHz, MHz, kHz, and Hz. Press the appropriate units key. Pressing the Enter key has the same affect as the MHz submenu key.
Signal Standard
Use the Up/Down arrow keys or the rotary knob to highlight a signal standard and press Enter to select. See Span Menu.
When a signal standard is selected, the center frequency and span for the first channel of the last segment of the particular standard is automatically tuned. Other settings, such as channel spacing and integration bandwidth, are also automatically entered.
Channel #
Use the Up/Down arrow keys, the keypad, or the rotary knob to select a channel number for the selected signal standard. The center of the channel is tuned to the center of the spectrum analyzer display.