User`s guide
Table Of Contents
- Overview
- Getting Started
- System Setting
- Making Measurements
- Measuring Multiple Signals
- Measuring a Low-Level Signal
- Improving Frequency Resolution and Accuracy
- Making Distortion Measurements
- One-button Power Measurement
- Making a Stimulus Response Transmission Measurement
- Measuring Stop Band Attenuation of a Low-pass Filter
- Making a Reflection Calibration Measurement
- Measuring Return Loss Using the Reflection Calibration Routine
- Making an Average Power Measurement
- Key Reference
- SCPI Command Reference
- Error Messages
- Menu Map
4 Making Measurements
50 N9340A User’s Guide
Using the Average Detector and
Increased Sweep Time
The analyzer’s noise floor response may mask
low-level signals. Selecting the instruments
averaging detector and increasing the sweep time
will smooth the noise and improves the signal’s
visibility. Slower sweep times are necessary to
average noise variations.
1 Refer to “Reducing Input Attenuation" on
page 47, and follow steps 1, 2 and 3.
2 Press [TRACE] > {More (1 of 2)} > {Detector} >
{Average} to select the average detector.
3 Press [BW/SWP] > {Sweep Time} to set the sweep
time to 500 ms.
Note how the noise appears to smooth out. The
analyzer has more time to average the values for
each of the displayed data points.
4 Press [BW/SWP] > {Avg Type} to change the
average type.
Figure 10 Using the average detector