Measurements
R&S
®
FSW
176User Manual 1173.9411.02 ─ 19
To load a user-defined configuration
1. In the "General Settings" tab of the "ACLR Setup" dialog box, select the "Manage
User Standards" button to display the "Manage" dialog box.
2. Select the user standard file.
3. Select "Load".
The stored settings are automatically set on the R&S FSW and the measurement is
restarted with the new parameters.
5.3.6.5 How to Compare the Tx Channel Power in Successive Measurements
For pure channel power measurements, where no adjacent channels and only one Tx
channel is defined, you can define a fixed reference power and compare subsequent
measurement results to the stored reference power.
1. Configure a measurement with only one Tx channel and no adjacent channels (see
also chapter 5.3.6.2, "How to Set up the Channels", on page 173).
2. Select the "Set CP Reference" softkey in the "Ch Power" menu, or the "Set CP
Reference" button in the "ACLR Setup" dialog box.
The channel power currently measured on the Tx channel is stored as a fixed ref-
erence power. The reference value is displayed in the "Reference" field of the
result table (in relative ACLR mode).
3. Start a new measurement.
The resulting power is indicated relative to the fixed reference power.
4. Repeat this for any number of measurements.
5. To start a new measurement without the fixed reference, temporarily define a sec-
ond channel or preset the instrument.
5.3.7 Measurement Examples
The R&S FSW has test routines for simple channel and adjacent channel power meas-
urements. These routines give quick results without any complex or tedious setting
procedures.
● Measurement Example 1 – ACPR Measurement on an CDMA2000 Signal........ 177
● Measurement Example 2 – Measuring Adjacent Channel Power of a W-CDMA
Uplink Signal......................................................................................................... 178
●
Measurement Example 3 – Measuring the Intrinsic Noise of the R&S FSW with the
Channel Power Function.......................................................................................181
Channel Power and Adjacent-Channel Power (ACLR) Measurement
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