Basic Measurement Examples
R&S
®
FSVA/FSV
121
Quick Start Guide 1321.3066.02 ─ 06
Table 7-7: Signal generator settings (e.g. R&S SMU)
Frequency
890 MHz
Level
0 dBm
Modulation
GSM, one time slot is switched on
1. Set the signal analyzer to the default state by pressing the PRESET key.
The R&S
FSVA/FSV is set to its default state.
2. Set the center frequency to 890 MHz, the span to 0 Hz and the resolution
bandwidth to 1 MHz.
a) Press the FREQ key and enter
890 MHz
.
b) Press the SPAN key and enter 0 Hz or press the "Zero Span" softkey.
c) Press the BW key.
d) Press the "Res BW Manual" softkey and enter
1 MHz
.
3. Set the reference level of the R&S
FSVA/FSV to 0 dBm (= level of the signal
generator) by pressing the AMPT key and entering
0 dBm
.
4. Set the sweep time to 2 ms.
a) Press the SWEEP key.
b) Press the "Sweeptime Manual" softkey and enter
2 ms
.
The R&S
FSVA/FSV shows the GSM burst continuously across the dis-
play.
5. Use the trigger source "Video" and the trigger polarity "Pos" to trigger on the
rising edge of the burst and shift the start of burst to the center of the screen.
a) Press the TRIG key.
b) Press the "Trg/Gate Source" softkey and select "Video" using the arrow
keys.
c) Press the "Trg/Gate Level" softkey and enter
70%
.
The R&S
FSVA/FSV shows a static image with the GSM burst at the start
of the trace.
d) Press the "Trigger Offset" softkey and enter
-1 ms
.
The R&S
FSVA/FSV shows the GSM burst in the right half of the measure-
ment diagram.
6. Configure the power measurement in zero span.
a) Press the MEAS key.
b) Press the "Time Domain Power" softkey to open the submenu.
c) Switch the "Limits" softkey to "On."
d) Press the "Left Limit" softkey.
Measurements in Zero Span
