48
Keysight EXG and MXG X-Series Signal Generators User’s Guide
Basic Operation
Configuring a Swept Output
Figure 3-6
Sweep Softkeys
Example: Configuring a Continuous, Linear Step Sweep
1.
Preset the instrument and open the Sweep/List menu: Press
Preset
>
SWEEP
.
Because continuous is the default sweep repeat selection, and linear is the default step
spacing selection, you do not need to set these parameters.
2.
Open the step sweep menu: Press
Configure Step Sweep.
3.
Set the following parameters:
4.
Sweep both frequency and amplitude: Press
Return
>
Return
>
Sweep
>
Freq Off On
>
Amptd
Off On
.
Output:
A signal that continuously sweeps from 500 to 600 MHz and from
−
20 to 0 dBm, with a dwell time of
500 ms at each of six equally spaced points
Start frequency 500 MHz:
Press
Freq Start
>
500
>
MHz
Stop frequency 600 MHz:
Press
Freq Stop
>
600
>
MHz
Amplitude at the beginning of the sweep,
−
20 dBm:
Press
Amptd Start
>
−
20
>
dBm
Amplitude at the end of the sweep, 0 dBm:
Press
Amptd Stop
>
0
>
dBm
.
6 sweep points:
Press
# Points
>
6
>
Enter
Dwell time at each point, 500 milliseconds:
Press
More
>
Step Dwell
>
500
>
msec
Dwell Time
= the time that the signal is settled and you can make
a measurement before the sweep moves to the next point.
(Point to point time is
the sum of the value set for the dwell plus
processing time, switching time, and settling time.)
Lin = steps equally spaced over the sweep; the output
changes linearly.
Log = step spacing increases logarithmically over the
sweep; the output changes exponentially.
Step Sweep and List Sweep dwell times are set
For details on each key, use key help
Sets the step size for a linear step sweep in frequency (the
difference between frequency points).
NOTE: Setting the step size will determine the number of
points in the step sweep based on the current start and stop
frequencies. Due to the integer number of step points, the
step size may be adjusted in order to yield a true linear
sweep between the start and stop frequencies.
Enables protection for the mechanical attenuator by automatically turning on
Atten Hold during frequency and/or power step sweeps.
This may cause unleveled RF output to occur for certain sweep configurations.
Disabling this attenuator protection will allow the sweep to optimally set both
the automatic leveling control (ALC) and output attenuation at each sweep
point.
When the attenuator protection is disabled, the step dwell time will be set to a
minimum of 50 ms as a precaution.
[:SOURce]:SWEep:ATTen:PROTection[:STATe] ON|OFF|1|0
