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
5Key Reference
92 N9340A User’s Guide
Sweep Time
Key access: [BW/SWP]
Selects the sweep time for the analyzer to tune
across the displayed frequency span (or, in zero
span, the time the analyzer takes to sweep the full
screen). Inputs may be made using the knob, the
arrow keys, or numeric keypad.
In non-zero spans:
When the sweep time is auto- coupled, the analyzer
selects the optimum (shortest) sweep time ranging
from 10 ms to 1000 s. The auto selection is
determined by three measurement settings:
• Frequency Span
• The selected Resolution Bandwidth
• The selected Video Bandwidth
Note that changing one of the three factors above
will change the sweep time. The sweep time is in
direct ratio to frequency span and is in reverse
ratio to the selected resolution bandwidth and
video bandwidth when auto- coupled.
In zero span:
Auto- couple does not function when in a zero span
setting. The sweep time can only be set manually.
The sweep time range is selectable from 6 s to 200
s in zero span.
NOTE
Reducing the sweep time increases the sweep rate.
CAU-CAUTION
With sweep time set to a value less than the minimum
auto-coupled value, an annotation “Data out of range”
appears in the active function block and the sweep time is
automatically set to the minimum auto-coupled value.