Selecting Sweep Parameters
Max Hold
To toggle maximum hold on or off, press the
MEAS/DISP
key, the
Trace
soft key and the
Max Hold
soft key. Maximum hold displays the maximum response of the input signal over
multiple sweeps.
Min Hold
To toggle minimum hold on or off, press the
MEAS/DISP
key, the
Trace
soft key and the
Min Hold
soft key. Min Hold displays the minimum response of the input signal over multi-
ple sweeps.
Detection Method
Each display point represents some number of measurements combined by a detection
method. The number of measurements per display point is affected by the span and the res-
olution bandwidth. The four available detection methods are Positive Peak, RMS Average,
Negative Peak, and Sampling Mode. Positive peak display the maximum value of all the
measurements associated with that display point. RMS Average detection displays the
RMS average power of all the measurements associated with that display point. Negative
peak displays the minimum value of all the measurements associated with that display
point. Sampling mode displays one measured value for the measurements associated with
the display point.
To set the detection method, press the
MEAS/DISP
key, the
Trace
soft key, and press the
Detection
soft key and select either
Positive Peak, RMS Average, Negative Peak
or
Sam-
pling Mode
detection.
Minimum Sweep Time
The minimum sweep time allows a value from .05 ms to 200 seconds to be entered. The ac-
tual sweep time will be either the Min Sweep Time entered, or the time necessary to
achieve accurate results, whichever is greater.
Sweep Average
In order to reduce the effects of noise, it may be desirable to average the results of several
sweeps and display that average rather than the results of individual sweeps.
To set the number of sweeps to average, press the
Average (2-25)
soft key and use the
Up/Down arrow key or directly enter the desired number of sweeps from the keypad. Press
ENTER
to set the sweep average.
NOTE
: Max Hold, Min Hold, and Average are mutually exclusive.
Adjusting Attenuator Settings
The spectrum analyzer attenuation can be automatically coupled, manually coupled, or dy-
namically adjusted.
Step 1.
Press the
AMPLITUDE
key.
Step 2.
Press the
Atten/Preamp
soft key.
Step 3.
Select the soft key corresponding to the desired coupling mode, as described be-
low.
3-12
Chapter 3 Getting Started