Trace Averaging - Keysight X Series Measurement Manual

Measuring a Low−Level Signal

Trace Averaging

Trace Averaging
Averaging is a digital process in which each trace point is averaged with the previous
average for the same trace point. Selecting averaging, when the analyzer is
autocoupled, changes the detection mode from normal to sample. Sample mode may
not measure a signal amplitude as accurately as normal mode, because it may not
find the true peak.
NOTE
This is a trace processing function and is not the same as using the average detector
(as described on
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.
page 50).
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.
52
Notes