Chapter 3 51
Making EDGE (with GSM) Measurements
Preparing for Measurements
Measurement Setup
The Meas Setup key accesses features that enable you to adjust
parameters of the current measurement, such as resolution bandwidth.
You will also use the
Meas Setup menu to access the Average, Trig Source,
and
Advanced measure setup feature menus.
The following measure setup features can be used with many or all
measurements.
•
Res BW key. Press Meas Setup, Res BW to change the resolution of a
given measurement. Selection of a narrower bandwidth will result in
a longer data acquisition time.
•
Restore Meas Defaults key. To preset only the settings that are
specific to the selected measurement, press
Meas Setup, More,
Restore Meas Defaults. This will set the measure setup parameters,
for the currently selected measurement only, to the factory defaults.
EDGE (with GSM) Averaging
Selecting one of the averaging keys in the
Meas Setup menu will allow
you to modify the number, averaging mode, and type of averaging you
use for the currently selected measurement.
•
Averages, Avg Bursts On Off, or Avg Number - Allows you to select
whether averages are made or not.
• Avg Mode Exp Repeat - Allows you to choose either exponential or
repeat averaging. This selection only effects the averaging after the
number of N averages is reached (set using the
Averages,
Avg Bursts, or Avg Number key).
— Exponential averaging: When
Measure is set at Cont, data
acquisitions will continue indefinitely. After N averages,
exponential averaging is used with a weighting factor of N (the
displayed average count stops at N). Exponential averaging
weights new data more than old data, which allows tracking of
slow-changing signals. The weighting factor N is set using the
Averages, Avg Bursts, or Avg Number key.
— Repeat averaging: When
Measure is set at Cont, data
acquisitions will continue indefinitely. After N averages is
reached, all previous result data is cleared and the average count
is set back to 1. This is equivalent to being in
Measure Single and
pressing the
Restart key each time the Single measurement
finishes.
To Next Page
Loading...
Need help?
General
