The Spectrum Application (RF Measurements)
R&S
®
FPL1000
308
User Manual 1178.3370.02 ─ 11
A frequency offset can be used to correct the display of a signal that is slightly distorted
by the measurement setup, for example.
The allowed values range from -1 THz to 1 THz. The default setting is 0 Hz.
Remote command:
6.4.3
Keeping the Center Frequency Stable - Signal Tracking
If the signal drifts on the display but you want to keep the center frequency on the sig-
nal peak, the center frequency can be adjusted automatically using
signal tracking
. In
this case, the signal trace is surveyed in a specified bandwidth around the expected
center frequency. After each sweep, the center frequency is set to the maximum signal
found within the searched bandwidth. If no maximum signal above a defined threshold
value is found in the searched bandwidth, the center frequency remains unchanged.
The search bandwidth and the threshold value are shown in the diagram by red lines
which are labeled as "TRK".
Signal Tracking
Access
: "Overview" > "Frequency" > "Signal Tracking" tab
Defines the settings for signal tracking. These settings are only available for spans > 0.
For more details see
Chapter 6.4.3, "Keeping the Center Frequency Stable - Signal
Frequency and Span Configuration
