Pause/Resume - Agilent Technologies X Series Manual

width of an FFT, an analog filter is placed before the ADC that is about 1.3 times as wide as the FFT
segment width. This spreads out the pulsed RF in time and reduces the maximum signal level seen by the
ADC. Therefore, the input attenuation can be reduced and the dynamic range increased without
overloading the ADC.
Further improvement in dynamic range is possible by changing the
menu of many measurements). If the segments are reduced in width,
improving dynamic range.
Depending on what IF Bandwidth option you have ordered, there can be up to three different IF paths
available in FFT sweeps, as seen in the diagram below:
~
10 MHz
~
25 MHz
~
40 MHz
The 10 MHz path is always used for Swept sweeps. It is always used for FFT sweeps as well, unless the
user specifies ~25 MHz in which case the 25 MHz path will be used for FFT sweeps, or ~40 MHz, in
which case the 40 MHz path will be used for FFT sweeps. Note that, although each of these keys picks
the specified path, the analyzer may choose an FFT width less than the full IF width, in order to optimize
speed, trading off acquisition time versus processing time.

Pause/Resume

Pauses a measurement after the current data acquisition is complete.
When Paused, the label on the key changes to Resume. Pressing Resume un-pauses the measurement.
When you are Paused, pressing
Key Path
Remote Command
Dependencies
, or
Restart Single Cont
Sweep/Control
:INITiate:PAUSe
Grayed out in Measurements that do not support Pausing.
Blanked in Modes that do not support Pausing.
FFT IF Gain
FFT IF Gain
ADC
ADC
does a Resume.
Sweep/Control
(in the Meas Setup
can be set to High,
547