R&S FSW Series, User Manual

Page: 325 / 1450

Measurements and Results
R&S
®
FSW
325 User Manual 1173.9411.02 ─ 43
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 1156
CALCulate<n>:DELTamarker<m>:X
on page 1154
CALCulate<n>:DELTamarker<m>:X:RELative?
on page 1169
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 991
7.11.5 How to Determine the Third Order Intercept
The precise TOI for the R&S FSW in relation to the input signals is provided in the data
sheet.
For remote operation, see
Chapter 14.5.12.2, "Programming Example: Measuring the
TOI" , on page 992.
1. Apply a two-tone signal with equal carrier levels to the R&S FSW input.
2. On the R&S FSW, 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.
7.11.6 Measurement Example – Measuring the R&S FSW's Intrinsic Inter-
modulation
A programming example demonstrating a TOI measurement in a remote environment
is provided in
Chapter 14.5.12.2, "Programming Example: Measuring the TOI" ,
on page 992.
Third Order Intercept (TOI) Measurement