4
.Quick Start
26
frequency span are self-adapted. They adjust to certain values
according to frequency span. Sweep time can be self-adapted
too.
Figure 4-11 Set frequency span
4) Activate marker
Press
Marker
softkey on the bottom, select [
Marker
►
] on the
right submenu. Press the softkey to select [Marker 1 2 3 4 5],
select Marker 1, the marker is located at horizontal center by
default, that is the signal peak point or its neighbor.
Press
Marker
softkey on the bottom, select [
Peak
►
] on the
right submenu. Select [
Max Search
]. Frequency and amplitude
values are read by the marker and shown on the top right of the
display area.
5) Setting amplitude
The reference level will be shown at the top of the display grid.
To get a better dynamic range, the real signal peak point should
be located at or near the top of display grid (reference level).
The reference level is also the maximum value on Y axis. Here
we reduce to 20dB reference level to increase the dynamic
range.
Press
AMPTD
softkey on the bottom, and the [
Ref Level
]
softkey on the right will be activated. The reference level can be
