Functional Description
8
1 GHz Spectrum Analyzer
Functional Description
Detailed description
of the fields
Start Center Stop
frequencies
These 3 values characterize the frequency sweep for the span
selected:
Start
indicates the span's start frequency
Center
indicates the span's center frequency
Stop
indicates the span's stop frequency
When one of the 3 frequencies is changed, the other 2 are
automatically recalculated on the basis of the span.
Increment:
Start
,
Center
and
Stop
can be adjusted by increments of ± 0.1 MHz
Dynamic:
Start
from 0 to (1000 - span) MHz
Center
from (span/2) to 1000 - (span/2) MHz
Stop
from span to 1000 MHz
Example
The span is 100 MHz with:
Start
at 200 MHz
Center at 250 MHz
Stop
at 300 MHz
If …
Then …
Center
is set to 500MHz,
Start
changes to 450 MHz (500 - 100/2).
Stop
changes to 550 MHz (500 + 100/2).
SPAN frequency
range
The
SPAN
represents the frequency band covered by the analyzer as it
sweeps its reception signal.
There is a pre-defined list of spans:
Full span 1000 MHz
500 MHz
200 MHz
100 MHz
50 MHz
20MHz
10 MHz
5 MHz
2 MHz
1 MHz
Zero span (fixed frequency)
At each change of span, the
Start
Center
Stop
frequencies are automatically updated, taking the last frequency
modified as a reference point.
