User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
357User Manual 1178.3370.02 ─ 03
Marker 1 / Marker 2 / Marker 3 / Marker 4
Indicates the detected characteristic values as determined by the TOI measurement
(see Chapter 7.2.10.3, "TOI Results", on page 355).
The marker positions can be edited; the TOI is then recalculated according to the new
marker values.
To reset all marker positions automatically, use the Search Signals function.
Remote command:
CALCulate<n>:MARKer<m>:X on page 714
CALCulate<n>:DELTamarker<m>:X on page 712
CALCulate<n>:DELTamarker<m>:X:RELative? on page 726
Search Signals
Performs a new search on the input signals and recalculates the TOI according to the
measured values.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:TOI:SEARchsignal ONCE on page 617
7.2.10.5 How to Determine the Third Order Intercept
The precise TOI for the R&S FPL1000 in relation to the input signals is provided in the
data sheet.
For remote operation, see Chapter 8.6.10.2, "Programming Example: Measuring the
TOI", on page 617.
1. Apply a two-tone signal with equal carrier levels to the R&S FPL1000 input.
2. On the R&S FPL1000, press the MEAS key.
3. Select the "Third Order Intercept" measurement function from the "Select Measure-
ment" dialog box.
The calculated TOI is indicated in the marker information. The markers required for
calculation are displayed in the marker table.
4. If the signal changes significantly during or after the TOI measurement, use the
"Search Signals" function to start a new signal search automatically and restart the
calculation of the TOI.
7.2.10.6 Measurement Example – Measuring the R&S FPL1000's Intrinsic Intermodulation
A programming example demonstrating a TOI measurement in a remote environment
is provided in Chapter 8.6.10.2, "Programming Example: Measuring the TOI",
on page 617.
Measurements and Results