Measurements
R&S
®
FSW
133
User Manual 1173.9411.02 ─ 19
4. Move the falling edge of the burst to the center of the display. To do so, switch the
trigger "Slope" to "Falling" (TRIG > "Trigger/Gate Config").
The R&S
FSW displays the falling edge of the GSM burst.
Fig. 5-17: Falling edge of the GSM burst displayed with high time resolution
5.2.5.2
Measuring the Signal-to-Noise Ratio of Burst Signals
When TDMA transmission methods are used, the signal-to-noise ratio or the dynamic
range for deactivation can be measured by comparing the power values during the
activation phase and the deactivation phase of the transmission burst. Therefore, the
R&S
FSW provides a measurement for absolute and relative power in zero span. In
the following example, the measurement is performed using a GSM burst.
Signal-to-Noise Ratio of a GSM Signal
Signal
Generator
R&S FSW
Fig. 5-18: Test setup
Basic Measurements
