The Spectrum Application (RF Measurements)
R&S
®
FPL1000
394
User Manual 1178.3370.02 ─ 11
video
signal
s1 s2 s3 s4 s5 s6 s8 s1
video
signal
s1 s2 s3 s4 s5 s6 s8 s1
Measurement point n
Video
Signal
Meas. point n+1
Span/<no. of meas points>
x
n
x
n+1
Span/<no. of meas points>
x
Using the bin-centered method, the first and last x-values of the trace are not identical
to the exact starting and end point of the measurement span. The distance between
two sweep points is span/(<no_sweep_points>) or span/bin_size.
Marker values are always determined using the bin-centered method. Markers placed
on the first and last x-values of the measured span indicate the same results as the
first and last trace point.
Example:
Assume the following measurement parameters:
●
Start frequency: 1.000 GHz
●
Stop frequency: 6.000 GHz
●
=> Span: 5 GHz
●
sweep points: 1000
●
=>bin: 5 MHz (span/<sweep points>)
The first trace point is displayed at (<f
start
> + bin/2) = 1.0025 GHz.
The last trace point is displayed at (<f
stop
> - bin/2) = 5.9975 GHz.
A marker placed at 1.000 GHz indicates the same result as a marker placed at 1.0025
GHz, since no other value is available.
For trace values in the frequency domain, you can select which method is used to
determine the x-values in the frequency domain, that is:
●
In the result displays
●
When exporting traces
●
command
See
Note the possible minor discrepancy between marker values and trace values using
the start/stop method.
Trace Configuration
