Spectrum analyzer and frequency marker position setting method of the same

A frequency marker position setting method of a spectrum analyzer including spectrum display control means for displaying a spectrum display screen including a graph region defined by a horizontal axis having a scale of a frequency and a vertical axis having a scale of a signal level, and for displaying, on the graph region, a graph showing an entire spectrum characteristic of a measured signal analyzed by signal analysis means, a frequency marker including a frequency indication frame indicating a value of a frequency on the horizontal axis corresponding to a point on the graph, and a level marker including a level indication frame indicating a value of a signal level on the vertical axis corresponding to the point, the frequency marker position setting method comprising:

• an input-enabled state display control step of displaying the frequency indication frame in a mode indicating an input-enabled state in which a desired frequency is inputtable, in response to an operation of selecting the frequency marker via input means, during the display of the spectrum display screen;
• an input reception step of receiving the input of the desired frequency to the frequency indication frame via the input means in a case of the input-enabled state;
• and
• a frequency marker position setting display control step of changing a position of the frequency marker on the horizontal axis to a position of the input frequency, and of updating the value of the frequency indicated by the frequency indication frame to a value of the input frequency to display the updated value,
• wherein the graph showing the entire spectrum characteristic of the measured signal remains displayed on the graph region during the input-enabled state and an operation-enabled state.

A frequency marker position setting method of a spectrum analyzer including spectrum display control means for displaying a spectrum display screen including a graph region defined by a horizontal axis having a scale of a frequency and a vertical axis having a scale of a signal level, and for displaying, on the graph region, a graph showing an entire spectrum characteristic of a measured signal analyzed by signal analysis means, a frequency marker including a frequency indication frame indicating a value of a frequency on the horizontal axis corresponding to a point on the graph, and a level marker including a level indication frame indicating a value of a signal level on the vertical axis corresponding to the point, the frequency marker position setting method comprising:

• an operation-enabled state display control step of displaying the graph region in a mode indicating an operation-enabled state in which a movement operation of the frequency marker along the horizontal axis is receivable, in response to an operation of selecting the graph via input means, during the display of the spectrum display screen;
• an operation reception step of receiving the movement operation of the frequency marker via the input means in a case of the operation-enabled state;
• and
• a frequency marker position setting display control step of changing a position of the frequency marker to a position of a frequency corresponding to the movement operation, and of updating the value of the frequency indicated by the frequency indication frame to a value of the frequency at the position after the change to display the updated value,
• wherein the graph showing the entire spectrum characteristic of the measured signal remains displayed on the graph region during an input-enabled state and the operation-enabled state.