Set The Amplitude; Power Offset Set Up For Compensating External Loss; Set The Span - Anritsu S412E User Manual

3-5 Spectrum Analyzer

Set the Amplitude

Press the Amplitude main menu key to display the Amplitude menu.
Set Amplitude Reference Level and Scale
1. Press the Reference Level submenu key and use the arrow keys, rotary knob, or the
keypad to change the reference level. Press Enter to set the reference level value.
2. Press the Scale submenu key and use the arrow keys, rotary knob, or the keypad to
enter the desired scale. Press Enter to set the scale value.
Set Amplitude Range and Scale
1. The Auto Atten submenu key sets an optimal reference level based on the measured
signal.
2. Press the Scale submenu key.
3. Enter the desired scale units by using the keypad, the arrow keys, or the rotary knob.
Press Enter to set. The y-axis scale is automatically renumbered.

Power Offset Set Up for Compensating External Loss

To obtain accurate results, compensate for any external attenuation by using power offset.
In power offset mode, the compensation factor is in dB. (External attenuation can be created
by using an external cable or an external high power attenuator.)
Press the RL Offset submenu key and use the keypad, the arrow keys, or the rotary knob to
enter the desired offset value. When using the rotary knob, the value changes in increments
of 0.1 dB. Using the Left/Right arrow keys changes the value in 10% increments of the value
shown on the Scale submenu key. When using the Up/Down arrow keys, the value changes in
the increment shown on the Scale submenu key. When using the keypad, enter the new value
then press Enter or the dB submenu key to set the value. The power offset is displayed in the
instrument settings summary column on the left side of the measurement display.

Set the Span

1. Press the Span main menu key or the Freq main menu key followed by the
Span submenu key.
2. To select full span, press the Full Span submenu key. Selecting full span overrides any
previously set Start and Stop frequencies.
3. For a single frequency measurement, press the Zero Span submenu key.
To quickly move the span value up or down, press the Span Up 1-2-5 or Span
Note Down 1-2-5 submenu keys These keys facilitate a zoom-in, zoom-out feature in a
1-2-5 sequence.
3-10 PN: 10580-00318 Rev. P
Quick Start Guide
S412E UG