Rohde & Schwarz FSVA - Measuring the Edges of a GSM Burst with High Time Resolution

Quick Start
R&S
®
FSVA/FSV
106Operating Manual 1176.7510.02 ─ 09
Measuring the Edges of a GSM Burst with High Time Resolution
Because of the high time resolution of the R&S FSVA/FSV at the 0 Hz display range,
the edges of TDMA bursts can be measured precisely. The edges can be shifted to the
screen area by using the trigger offset.
Test setup
Table 2-9: Signal generator settings (e.g. R&S SMU)
Frequency 890 MHz
Level 0 dBm
Modulation GSM, one timeslot activated
The measurement is based on the setting in the example above for measuring the
power of the GSM during the activation phase.
1. Switch off the power measurement.
a) Press the MEAS key.
b) Press the "All Functions Off" softkey.
2. Increase the time resolution to 100 µs.
a) Press the SWEEP key.
b) Press the "Sweeptime Manual" softkey and enter 100 µs.
3. Using the trigger softkey, shift the rising edge of the GSM burst to the center of the
screen.
a) Press the TRIG key.
b) Press the "Trigger Offset" softkey.
Basic Measurement Examples