Agilent X-Series Signal Generators User’s Guide 53
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:
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
as described on page 44.
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
[:SOURce]:SWEep:ATTen:PROTection[:STATe]?
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