Measurements and Result Displays
R&S
®
ESW
104
User Manual 1177.6298.02 ─ 08
points are stored on the instrument, occupying a large amount of memory, and each
measurement point increases the overall measurement time.
For details on how the number of measurement points affect the trace results on the
screen, see
Chapter 11.3.1.1, "Working with Trace Detectors"
Measurement points in receiver application
In the receiver application, the number of measurement points considered in a scan is
determined by the frequency range and the selected frequency step size: the
R&S
ESW runs a measurement every x
Hz, so the actual number of measurement
points depends on frequency range you are scanning. The maximum number of mea-
surement points that a scan supports is 10,000,001 (this is only possible with two or
less active traces).
The frequency step size depends on the frequency step mode and the type of scan
you are using.
●
Scans without a scan table:
The frequency step size depends on the measurement bandwidth.
Example:
Consider the following scan configuration:
●
Start frequency: 150 kHz
●
Stop frequency: 1 MHz
●
Measurement bandwidth: 1 kHz
The measurement bandwidth of 1
kHz results in a frequency step size of 400
Hz. In
that case, the number of measurement points in this example would be about 2100.
●
Scans with a scan table:
The frequency step size is either determined automatically (in which case it
depends on the measurement bandwidth) or manually (in which case you define
the required step size)
Example:
Consider the following scan table settings for a given scan range:
●
Start frequency: 150 kHz
●
Stop frequency: 30 MHz
●
Step size mode: linear
●
Step size: 4 kHz
With said settings, the R&S
ESW collects a dataset every 4
kHz, so the number of
measurement points in this example would be about 7500.
Measurement points in spectrum application
In the spectrum application, a measurement point is called a sweep point. Instead of
determining the number of measurement points based on other settings, you can
select the number of measurement points manually. By default, the R&S
ESW meas-
ures 1001 points in one measurement.
Test Automation
