Giga-tronics 2500B Series Microwave Signal Generators
Ramp Operation
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Page 29
Ramp Menus
Submenu
Parameter
Figure 11: Ramp Freq Center/Span Sweep Menu
Ramp Freq
Center/Span
Sweep Menu
Center Freq
The center frequency of the frequency span that is swept.
Span
This menu item displays and allows you to modify the frequency range of the
ramp (sweep). The span is centered on the Center frequency.
Power
The output power level during the center/span frequency sweep. The range of
the power level can be set to any valid power setting of the instrument.
Sweep Time
This is the duration of one cycle of a frequency sweep.
Resolution
This is the number of frequency steps in the frequency sweep.
The resolution can be set to:
401, 801, or 1601, or
Analog sweep.
Analog Sweep provides a number of smooth frequency segments across a frequency range
as opposed to the Digital Sweep feature which is made up of individual frequency points,
from 401/801/1601 discrete frequency points.
A single Analog Sweep is comprised of a number of smaller sweep segments. Analog
sweeps are broken down into anywhere from 1 to 685 sweep segments. Each segment is a
smooth frequency ramp. The segment size depends on the current operating band and the
sweep speed. Breaking a sweep into smaller segments allows the instrument to correct for
RF amplitude variations between segments. See figure below.
Use the step up/step down buttons or rotary knob to set the resolution; the numeric
keypad cannot be used.
