User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
363User Manual 1178.3370.02 ─ 09
The remote commands required to define these settings are described in Chap-
ter 11.8.8, "Working with Markers", on page 839.
● Precise Frequency (Signal Count) Marker............................................................363
● Measuring Noise Density (Noise Meas Marker)....................................................365
● Phase Noise Measurement Marker.......................................................................367
● Measuring Characteristic Bandwidths (n dB Down Marker)..................................370
● Fixed Reference Marker........................................................................................372
● Measuring the Power in a Channel (Band Power Marker)....................................373
● Demodulating Marker Values and Providing Audio Output (Marker Demodulation)
.............................................................................................................................. 376
● Marker Peak List................................................................................................... 379
● Deactivating All Marker Functions.........................................................................382
7.9.4.1 Precise Frequency (Signal Count) Marker
Access: "Overview" > "Analysis" > "Marker Functions" > "Select Marker Function" >
"Signal Count" > "Signal Count Config"
Or: [MKR] > "Select Marker Function" > "Signal Count" > "Signal Count Config"
The frequency count marker is not available if the tracking generator is active (see
"Tracking Generator Settings" on page 292).
A normal marker determines the position of the point on the trace and indicates the sig-
nal frequency at this position. The trace, however, contains only a limited number of
points. Depending on the selected span, each trace point can contain many measure-
ment values. Thus, the frequency resolution of each trace point is limited.
(See also Chapter 7.6.1.8, "How Much Data is Measured: Sweep Points and Sweep
Count", on page 321).
Marker Usage