FSMR Measurement
Examples
1166.3311.12-01 1.7
E-1
Example 2: Low RF Level Measurements with Tuned RF Level Mode
Measurement
The main functionality of a measuring receiver is the RF level measurement. Measurements of low
power RF signals will be performed in the Tuned RF Level mode with highest accuracy. The FSMR will
automatically handle all required settings.
Main Receiver Functions
The measurement of RF levels over a wide input level range is performed in three different level ranges.
To reach the highest possible accuracy, a calibration is performed with a power sensor. The FSMR does
offer fully automated calibration procedures in the Tuned RF Level mode. The following example will
guide through the calibration steps. All functions for Tuned RF level measurements can be reached
from the RF LEVEL main menu.
Measurement Setup
Fig.1-5
Tuned RF Level measurement setup
The following settings are used on the generator:
1.
PRESET
the generator.
2. Set RF Frequency to 300 MHz.
3. Set the output level to 0 dBm.
Measurement Sequence – Tuned RF Level Measurements
Connect the Power sensor with the Signal Generator output and with the Measuring Receiver power
sensor connector on the front panel.
The following steps are performed:
1. Calibrate the FSMR with the power meter.
2. Change the output level and perform further Range calibrations.
3. Average the results for enhanced stability.
4. Measure an unstable source (unstable frequency)
