2635 manual - BK Precision

The next step to be defined is the mode of testing.
Step:
In this mode the signal level will be detected over a measuring
period of 1 s (zero span). The test begins at the start frequency
as defined, for further measurement steps the frequency is
incremented according to the selected bandwidth and terminates
at the stop frequency. In addition to the basic measuring period
of 1 s the transfer time for the data from the instrument to the
PC has to be taken into consideration. The entire period for one
step might exceed 1.5 s to 2 s. The high accuracy of measurement
is an advantage, at the price of a time consuming test procedure.
Sweep + Step:
In this mode the value for the span will be chosen as high as
possible according to the selected bandwidth. When using the
“Max. Hold” acquisition method the center frequency is modified
between the start and the stop frequency until the complete
frequency range will be covered by the measurement (sweep).
The length of the acquisition
Subject to change without notice
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