Technical data

5-10
Operating Concepts
Sweep Types
Power Sweep (dBm)
The POWER SWEEP, softkey turns on a power sweep mode that is used to characterize power-sensitive
circuits. In this mode, power is swept at a single frequency, from a start power value to a stop power value,
selected using the Start, and Stop, 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 CW FREQ, 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 CW TIME, 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 CW
FREQ, 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.