6. Frequency span and scale. Shows the start and stop frequencies in the spectrum trace. The Horizontal badge shows the center
frequency.
RF View guidelines
• The vertical and horizontal in-graticule labels apply to the currently selected channel.
• The MANm spectrum trace handle (see
on page 240) for the currently selected channel is shown highlighted,
just like with analog channels.
• The MANm trace handle for non-selected traces are shown in the same fashion as non-selected analog channels.
• The RF View does not support zoom.
• Horizontal pinch and expand touch gestures adjust the spectrum span in the same style as a horizontal pinch/expand in the Waveform
Vew.
• A horizontal pan adjusts the center frequency.
• Vertical pinch and expand touch gestures adjust the spectrum vertical scale in the same style as a vertical pinch/expand in the
Waveform Vew.
• A vertical pan adjusts the vertical position.
Using spectral analysis controls
Use these control to configure the acquisition and display of the RF input.
1. Tap the RF badge or push the RF button to bring up the frequency domain display and create an RF badge. The RF menu provides
access to the Spectrogram display.
2. Double-tap the Horizontal badge to open the Horizontal menu.
3. Specify the portion of the spectrum to view on the display:
• Tap and use the multipurpose knob or double-tap the Center Frequency and Span fields or
• Tap and use the multipurpose knob or double-tap the Start Frequency and Stop Frequency
4. Tap RBW Mode to define the resolution bandwidth
• Auto, tap Span:RBW and use the keypad to set resolution bandwidth
• Manual, tap RBW and use the multipurpose knob or double-tap RBW to set the resolution bandwidth.
5. Tap Window and select which FFT window to use. The choices are:
• Rectangular see
• Hanning see
on page 268
• Hamming see
on page 269
• Blackman-Harris see
Blackman-Harris FFT window concepts
on page 268
6. Double-tap the RF badge and use the controls to set the Reference Level and the Scale of the frequency domain traces.
Setting up the RF input
This topic helps set up the center frequency, span, and reference level.
Frequency and span parameters
1. The center frequency is a precise frequency at the center of the display. In many applications, it is a carrier frequency.
Waveform acquisition concepts
3 Series Mixed Domain Oscilloscope Printable Help
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