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Operating Concepts
Sweep Types
stop power value, selected using the and keys and the entry block. This feature is
convenient for such measurements as gain compression or AGC (automatic gain control) slope. To set the
frequency of the power sweep, use
in the stimulus menu.
The span of the swept power is limited to being equal to or within one of the eight pre-defined power ranges.
The attenuator will not switch to a different power range while in the power sweep mode. Therefore, when
performing a power sweep, power range selection will automatically switch to the manual mode.
In power sweep, the entered sweep time may be automatically changed if it is less than the minimum
required for the current configuration (number of points, IF bandwidth, averaging, etc.).
CW Time Sweep (Seconds)
The softkey turns on a sweep mode similar to an oscilloscope. The analyzer is set to a single
frequency, and the data is displayed versus time. The frequency of the CW time sweep is set with
in the stimulus menu. In this sweep mode, the data is continuously sampled at precise,
uniform time intervals determined by the sweep time and the number of points minus 1. The entered sweep
time may be automatically changed if it is less than the minimum required for the current instrument
configuration.
In time domain using Option 010, the CW time mode data is translated to frequency domain, and the x-axis
becomes frequency. In this mode, the instrument can be used as a spectrum analyzer to measure signal
purity, or for low frequency (<1 kHz) analysis of amplitude or pulse modulation signals.
Selecting Sweep Modes
In addition to the previous sweep types, there are also two different sweep modes. These can be accessed
through the correction menu by pressing
or
.
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