Measurements and Results
R&S
®
FSVA3000/ R&S
®
FSV3000
141
User Manual 1178.8520.02 ─ 01
Figure 7-17: Falling edge of the GSM burst displayed with high time resolution
7.2.6.2
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
FSV/A 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
Figure 7-18: Test setup
Table 7-8: Signal generator settings (e.g. R&S SMW)
Frequency
890 MHz
Level
0 dBm
Modulation
GSM, one time slot is switched on
1. Select [PRESET] to reset the instrument.
2. Set the center frequency to
890
MHz
.
3. Set the frequency span to
0
Hz
.
4. Set the resolution bandwidth to
1
MHz
.
Basic Measurements
