R&S ESR

Basic Measurement Examples
R&S
®
ESR
96Getting Started 1316.3749.02 ─ 09
Table 7-5: Signal generator settings (e.g. R&S SMU)
Frequency 890 MHz
Level 0 dBm
Modulation GSM, one timeslot activated
1. Set the signal analyzer to the default state by pressing the [PRESET] key.
The R&S ESR is set to its default state.
2. Select "Spectrum" mode.
3. 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.
4. Set the reference level of the R&S ESR to 10 dBm (= level of the signal gener-
ator +10 dB) and set the attenuation to 20 dB.
a) Press the [AMPT] key.
b) Enter 10 dBm.
c) Press the "Rf Atten Manual" softkey.
d) Enter 20 dB.
5. Set the sweep time to 1 ms.
a) Press the [SWEEP] key.
b) Press the "Sweeptime Manual" softkey and enter 1 ms.
The R&S ESR shows the GSM burst continuously across the display.
6. By using the video trigger, set triggering on the rising edge of the burst.
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 ESR 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.
7. Configure 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