The Spectrum Application (RF Measurements)
R&S
®
FPL1000
113
User Manual 1178.3370.02 ─ 11
The R&S
FPL1000 shows the GSM burst continuously across the display.
8. Using the video trigger, set triggering on the rising edge of the burst.
a) Press the [TRIG] key.
b) Set the "Trg Source" to "Video".
c) Set the "Trg/Gate Level" to
70%
.
The R&S
FPL1000 shows a static image with the GSM burst at the start of the
trace. The trigger level is displayed as a horizontal line labeled with the absolute
level for the trigger threshold in the measurement diagram.
9. Activate power measurement within the activation phase of the burst in zero span.
a) Press the [MEAS] key.
b) Select "Time Domain Power".
c) Select "Time Dom Power Config".
d) Set the "Limits" state to "On".
e) Select the "Left Limit" input field.
f) By turning the rotary knob clockwise, move the vertical line "S1" to the start of
the burst.
g) Select the "Right Limit" input field.
h) By turning the rotary knob clockwise, move the vertical line "S2" to the end of
the burst.
The R&S
FPL1000 displays the average (mean) power during the activation phase
of the burst.
Figure 6-14: Measurement of the average power during the burst of a GSM signal
Measurements and Results
