MPB SEP, Руководство пользователя

Страница: 28 / 48

USER MANUAL
S E M S
- 28 -
4.12. Frequencies
Through this tab, the user can insert and edit
specific frequencies. Four commands are
available: “Start”, “Stop”, “Span”, and “Center”.
By editing values in any space provided, of
course different values in the other three might
appear. In most of the cases however, by editing
the “Center”, the span value will stay the same.
Please note that through the “Start”, “Stop” and
“Center” settings, it is possible to switch between
“Band1” and “Band2”, and there is a dedicated
label that indicates the ongoing working band
chosen. Through the “Span” tab, the
measurement range can be set within the selected
working band (“Band1” and “Band2”). This
means that is not possible through the “Span”
values, to switch between “Band1” and “Band2”
.
Please
note that in proximity of the limits of the
bands, the “Start”, “Stop” and “Span” values,
could be automatically re-calculated for visu-
alization purposes. Please also note that the RBW
follows the “Span “settings, so by editing the
span, the “RBW” value can change according to
the device’s hardware features. Please note that
the numeric buttons near the “Center” and the
“Span” (not available in “Band1”) will change
relative values and adapt others for facility.
4.13. Axis Selection
Figure 22 Frequencies