Using The Average Detector And Increased Sweep Time - Keysight X Series Measurement Manual

Measuring a Low−Level Signal

Using the Average Detector and Increased Sweep Time

Using the Average Detector and Increased Sweep Time
When the analyzer noise masks low-level signals, changing to the average detector
and increasing the sweep time smooths the noise and improves the signal visibility.
Slower sweeps are required to average more noise variations.
Step
1 Set up the signal
generator.
2 Connect the source RF
OUTPUT to the analyzer
RF INPUT as shown.
3 Select the mode.
4 Preset the mode.
5 Set the center frequency,
span and reference level.
Action
a. Set the frequency to 300
MHz.
b. Set the amplitude to
−80 dBm.
• Press Mode, Spectrum
Analyzer.
• Press Mode Preset.
a. Press FREQ Channel,
Center Freq, 300, MHz.
b. Press SPAN X Scale, Span,
5, MHz.
c. Press AMPTD Y Scale,
Ref Level, 40, −dBm.
50
Notes