FSMR Measurement
Examples
1166.3311.12-01 1.11
E-1
3. Average the results for enhanced stability
Change the signal generator output level further down
The following settings are used on the generator:
Change the signal generator RF Level to -110 dBm).
RF LEVEL
AVERAGING
[OFF]
AVERAGING
[10]
The FSMR is now performing a calibrated measurement at – 110
dBm. The reading will be flickering due to a low signal to noise ratio.
For a more stable reading, the FSMR does offer several functions.
The stability of a low level measurement is mainly depending on the
measurement time. A longer acquisition of the signal does allow for
a more accurate measurement. The averaging of several single
acquisitions will lead to an effective longer measurement time.
Press the RF LEVEL hotkey.
The RF LEVEL menu is displayed.
In the RF LEVEL menu press the AVERAGE softkey.
The AVERAGE will be switched on. The number off measurements
can be entered in the AVERAGING COUNT box which appears on
top of the screen. The default value is set to 10 Averages.
The instrument will now perform an averaged measurement. The
average function is a floating average over the number of
measurements chosen with the Average Count entry (default value:
10).
Fig.1-8
Tuned RF Level measurement with Averaging
